./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/softsign_w4_r4_case_0_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/softsign_w4_r4_case_0_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 55174c4178047903f4f74454f4f3f9d1fe82d770846e2b64f07d4e33aea55dbd --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:37:30,951 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:37:31,022 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 06:37:31,028 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:37:31,030 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:37:31,059 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:37:31,060 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:37:31,060 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:37:31,061 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:37:31,061 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:37:31,062 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:37:31,062 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:37:31,063 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:37:31,063 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:37:31,064 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:37:31,064 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:37:31,065 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:37:31,065 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:37:31,066 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:37:31,066 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:37:31,067 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:37:31,067 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:37:31,068 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:37:31,069 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:37:31,069 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:37:31,069 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:37:31,070 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:37:31,070 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:37:31,071 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:37:31,071 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:37:31,071 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:37:31,072 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:37:31,072 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:37:31,073 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:37:31,073 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:37:31,073 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:37:31,074 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:37:31,074 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:37:31,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:37:31,075 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:37:31,075 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:37:31,076 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:37:31,076 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:37:31,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:37:31,077 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:37:31,077 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:37:31,078 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:37:31,078 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_a085cc26-796f-4a5a-bf09-4126abbfcab3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55174c4178047903f4f74454f4f3f9d1fe82d770846e2b64f07d4e33aea55dbd [2024-11-09 06:37:31,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:37:31,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:37:31,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:37:31,404 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:37:31,405 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:37:31,407 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/neural-networks/softsign_w4_r4_case_0_safe.c-amalgamation.i Unable to find full path for "g++" [2024-11-09 06:37:33,506 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:37:33,938 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:37:33,938 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/sv-benchmarks/c/neural-networks/softsign_w4_r4_case_0_safe.c-amalgamation.i [2024-11-09 06:37:33,975 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/data/194a40262/63468299e5a5475b9f3c8044abeda549/FLAG70d148a98 [2024-11-09 06:37:33,995 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/data/194a40262/63468299e5a5475b9f3c8044abeda549 [2024-11-09 06:37:33,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:37:34,000 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:37:34,002 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:37:34,002 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:37:34,008 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:37:34,009 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:37:33" (1/1) ... [2024-11-09 06:37:34,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36c2c345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:34, skipping insertion in model container [2024-11-09 06:37:34,011 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:37:33" (1/1) ... [2024-11-09 06:37:34,107 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:37:35,431 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_a085cc26-796f-4a5a-bf09-4126abbfcab3/sv-benchmarks/c/neural-networks/softsign_w4_r4_case_0_safe.c-amalgamation.i[71412,71425] [2024-11-09 06:37:35,747 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 06:37:35,759 INFO L158 Benchmark]: Toolchain (without parser) took 1754.76ms. Allocated memory is still 144.7MB. Free memory was 102.7MB in the beginning and 71.3MB in the end (delta: 31.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-11-09 06:37:35,759 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 144.7MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:37:35,760 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1752.06ms. Allocated memory is still 144.7MB. Free memory was 102.2MB in the beginning and 71.3MB in the end (delta: 31.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-11-09 06:37:35,763 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 144.7MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1752.06ms. Allocated memory is still 144.7MB. Free memory was 102.2MB in the beginning and 71.3MB in the end (delta: 31.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/softsign_w4_r4_case_0_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 55174c4178047903f4f74454f4f3f9d1fe82d770846e2b64f07d4e33aea55dbd --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:37:37,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:37:38,094 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-09 06:37:38,102 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:37:38,103 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:37:38,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:37:38,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:37:38,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:37:38,142 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:37:38,143 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:37:38,143 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:37:38,144 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:37:38,145 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:37:38,145 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:37:38,148 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:37:38,148 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:37:38,149 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:37:38,150 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:37:38,150 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:37:38,150 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:37:38,151 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:37:38,155 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:37:38,155 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:37:38,156 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:37:38,156 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 06:37:38,156 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 06:37:38,157 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:37:38,157 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 06:37:38,157 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:37:38,158 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:37:38,158 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:37:38,158 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:37:38,160 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 06:37:38,161 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:37:38,161 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:37:38,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:37:38,162 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:37:38,162 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:37:38,163 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:37:38,163 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 06:37:38,164 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 06:37:38,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:37:38,165 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:37:38,165 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_a085cc26-796f-4a5a-bf09-4126abbfcab3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55174c4178047903f4f74454f4f3f9d1fe82d770846e2b64f07d4e33aea55dbd [2024-11-09 06:37:38,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:37:38,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:37:38,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:37:38,635 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:37:38,635 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:37:38,637 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/neural-networks/softsign_w4_r4_case_0_safe.c-amalgamation.i Unable to find full path for "g++" [2024-11-09 06:37:40,674 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:37:41,098 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:37:41,098 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/sv-benchmarks/c/neural-networks/softsign_w4_r4_case_0_safe.c-amalgamation.i [2024-11-09 06:37:41,122 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/data/f9c91f60b/482d4be38ad54a758dd7c5495fae4ce0/FLAG6c76c51c7 [2024-11-09 06:37:41,269 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/data/f9c91f60b/482d4be38ad54a758dd7c5495fae4ce0 [2024-11-09 06:37:41,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:37:41,273 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:37:41,274 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:37:41,274 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:37:41,279 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:37:41,280 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:37:41" (1/1) ... [2024-11-09 06:37:41,281 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7856e9f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:41, skipping insertion in model container [2024-11-09 06:37:41,281 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:37:41" (1/1) ... [2024-11-09 06:37:41,358 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:37:42,315 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_a085cc26-796f-4a5a-bf09-4126abbfcab3/sv-benchmarks/c/neural-networks/softsign_w4_r4_case_0_safe.c-amalgamation.i[71412,71425] [2024-11-09 06:37:42,608 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 06:37:42,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:37:42,704 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:37:42,772 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_a085cc26-796f-4a5a-bf09-4126abbfcab3/sv-benchmarks/c/neural-networks/softsign_w4_r4_case_0_safe.c-amalgamation.i[71412,71425] [2024-11-09 06:37:42,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:37:43,278 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:37:43,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:43 WrapperNode [2024-11-09 06:37:43,279 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:37:43,280 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:37:43,280 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:37:43,281 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:37:43,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:43" (1/1) ... [2024-11-09 06:37:43,358 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:43" (1/1) ... [2024-11-09 06:37:43,405 INFO L138 Inliner]: procedures = 780, calls = 729, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 418 [2024-11-09 06:37:43,405 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:37:43,406 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:37:43,406 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:37:43,406 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:37:43,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:43" (1/1) ... [2024-11-09 06:37:43,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:43" (1/1) ... [2024-11-09 06:37:43,429 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:43" (1/1) ... [2024-11-09 06:37:43,429 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:43" (1/1) ... [2024-11-09 06:37:43,465 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:43" (1/1) ... [2024-11-09 06:37:43,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:43" (1/1) ... [2024-11-09 06:37:43,482 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:43" (1/1) ... [2024-11-09 06:37:43,485 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:43" (1/1) ... [2024-11-09 06:37:43,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:37:43,493 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:37:43,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:37:43,494 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:37:43,495 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:43" (1/1) ... [2024-11-09 06:37:43,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:37:43,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:37:43,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:37:43,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:37:43,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2024-11-09 06:37:43,568 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_simpleRNN [2024-11-09 06:37:43,568 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_simpleRNN [2024-11-09 06:37:43,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2024-11-09 06:37:43,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:37:43,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:37:43,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:37:43,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-09 06:37:43,569 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-09 06:37:43,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 06:37:43,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 06:37:43,569 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_affine_matmul [2024-11-09 06:37:43,569 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_affine_matmul [2024-11-09 06:37:43,570 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2024-11-09 06:37:43,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2024-11-09 06:37:43,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:37:43,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 06:37:43,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2024-11-09 06:37:43,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2024-11-09 06:37:43,570 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_simpleRNNcell [2024-11-09 06:37:43,570 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_simpleRNNcell [2024-11-09 06:37:43,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-09 06:37:43,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2024-11-09 06:37:43,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 06:37:43,873 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:37:43,876 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:37:54,527 INFO L? ?]: Removed 153 outVars from TransFormulas that were not future-live. [2024-11-09 06:37:54,527 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:37:54,549 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:37:54,550 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 06:37:54,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:37:54 BoogieIcfgContainer [2024-11-09 06:37:54,551 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:37:54,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:37:54,555 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:37:54,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:37:54,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:37:41" (1/3) ... [2024-11-09 06:37:54,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d27cd58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:37:54, skipping insertion in model container [2024-11-09 06:37:54,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:43" (2/3) ... [2024-11-09 06:37:54,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d27cd58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:37:54, skipping insertion in model container [2024-11-09 06:37:54,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:37:54" (3/3) ... [2024-11-09 06:37:54,564 INFO L112 eAbstractionObserver]: Analyzing ICFG softsign_w4_r4_case_0_safe.c-amalgamation.i [2024-11-09 06:37:54,583 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:37:54,587 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:37:54,659 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:37:54,665 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;@fcc2d5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:37:54,666 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:37:54,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 119 states have (on average 1.5126050420168067) internal successors, (180), 120 states have internal predecessors, (180), 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 06:37:54,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 06:37:54,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:37:54,682 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:37:54,683 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:37:54,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:37:54,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1037748562, now seen corresponding path program 1 times [2024-11-09 06:37:54,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:37:54,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565336316] [2024-11-09 06:37:54,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:37:54,712 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 06:37:54,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:37:54,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:37:54,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:37:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:37:55,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-09 06:37:55,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:37:55,770 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 06:37:55,770 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:37:55,771 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:37:55,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565336316] [2024-11-09 06:37:55,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565336316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:37:55,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:37:55,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:37:55,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658699670] [2024-11-09 06:37:55,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:37:55,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 06:37:55,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:37:55,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 06:37:55,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:37:55,807 INFO L87 Difference]: Start difference. First operand has 133 states, 119 states have (on average 1.5126050420168067) internal successors, (180), 120 states have internal predecessors, (180), 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 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 06:37:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:37:55,861 INFO L93 Difference]: Finished difference Result 262 states and 382 transitions. [2024-11-09 06:37:55,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 06:37:55,863 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 17 [2024-11-09 06:37:55,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:37:55,875 INFO L225 Difference]: With dead ends: 262 [2024-11-09 06:37:55,876 INFO L226 Difference]: Without dead ends: 129 [2024-11-09 06:37:55,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 06:37:55,887 INFO L432 NwaCegarLoop]: 192 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, 192 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 06:37:55,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:37:55,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-09 06:37:55,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-09 06:37:55,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 116 states have (on average 1.5) internal successors, (174), 116 states have internal predecessors, (174), 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 06:37:55,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 188 transitions. [2024-11-09 06:37:55,963 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 188 transitions. Word has length 17 [2024-11-09 06:37:55,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:37:55,969 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 188 transitions. [2024-11-09 06:37:55,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 06:37:55,969 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 188 transitions. [2024-11-09 06:37:55,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 06:37:55,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:37:55,970 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:37:56,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:37:56,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:37:56,172 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:37:56,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:37:56,173 INFO L85 PathProgramCache]: Analyzing trace with hash -2048865812, now seen corresponding path program 1 times [2024-11-09 06:37:56,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:37:56,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910342096] [2024-11-09 06:37:56,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:37:56,177 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 06:37:56,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:37:56,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:37:56,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:37:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:37:57,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:37:57,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:37:57,202 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 06:37:57,202 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:37:57,202 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:37:57,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910342096] [2024-11-09 06:37:57,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910342096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:37:57,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:37:57,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:37:57,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623960952] [2024-11-09 06:37:57,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:37:57,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:37:57,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:37:57,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:37:57,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:37:57,206 INFO L87 Difference]: Start difference. First operand 129 states and 188 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (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 06:37:57,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:37:57,914 INFO L93 Difference]: Finished difference Result 255 states and 372 transitions. [2024-11-09 06:37:57,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:37:57,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (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 17 [2024-11-09 06:37:57,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:37:57,917 INFO L225 Difference]: With dead ends: 255 [2024-11-09 06:37:57,917 INFO L226 Difference]: Without dead ends: 129 [2024-11-09 06:37:57,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:37:57,919 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 0 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:37:57,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 372 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 06:37:57,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-09 06:37:57,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-09 06:37:57,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 116 states have (on average 1.4913793103448276) internal successors, (173), 116 states have internal predecessors, (173), 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 06:37:57,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 187 transitions. [2024-11-09 06:37:57,935 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 187 transitions. Word has length 17 [2024-11-09 06:37:57,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:37:57,935 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 187 transitions. [2024-11-09 06:37:57,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (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 06:37:57,936 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 187 transitions. [2024-11-09 06:37:57,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 06:37:57,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:37:57,937 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:37:57,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:37:58,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:37:58,139 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:37:58,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:37:58,139 INFO L85 PathProgramCache]: Analyzing trace with hash -769002134, now seen corresponding path program 1 times [2024-11-09 06:37:58,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:37:58,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808441437] [2024-11-09 06:37:58,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:37:58,143 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 06:37:58,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:37:58,146 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:37:58,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:37:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:37:59,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:37:59,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:37:59,691 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 06:37:59,692 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:37:59,692 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:37:59,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808441437] [2024-11-09 06:37:59,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808441437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:37:59,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:37:59,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:37:59,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815271319] [2024-11-09 06:37:59,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:37:59,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:37:59,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:37:59,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:37:59,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:37:59,695 INFO L87 Difference]: Start difference. First operand 129 states and 187 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 06:37:59,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:37:59,977 INFO L93 Difference]: Finished difference Result 140 states and 200 transitions. [2024-11-09 06:37:59,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:37:59,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 17 [2024-11-09 06:37:59,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:37:59,982 INFO L225 Difference]: With dead ends: 140 [2024-11-09 06:37:59,987 INFO L226 Difference]: Without dead ends: 119 [2024-11-09 06:37:59,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:37:59,989 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 19 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 716 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 06:37:59,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 716 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:37:59,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-09 06:38:00,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-11-09 06:38:00,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 107 states have (on average 1.4766355140186915) internal successors, (158), 107 states have internal predecessors, (158), 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 06:38:00,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 170 transitions. [2024-11-09 06:38:00,007 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 170 transitions. Word has length 17 [2024-11-09 06:38:00,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:38:00,008 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 170 transitions. [2024-11-09 06:38:00,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 06:38:00,008 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 170 transitions. [2024-11-09 06:38:00,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 06:38:00,009 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:38:00,009 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:38:00,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:38:00,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:38:00,210 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:38:00,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:38:00,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1841899963, now seen corresponding path program 1 times [2024-11-09 06:38:00,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:38:00,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010138385] [2024-11-09 06:38:00,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:38:00,212 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 06:38:00,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:38:00,216 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:38:00,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:38:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:38:02,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-09 06:38:02,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:38:02,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:38:02,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-09 06:38:02,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-09 06:38:03,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2024-11-09 06:38:03,621 INFO L349 Elim1Store]: treesize reduction 32, result has 27.3 percent of original size [2024-11-09 06:38:03,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2024-11-09 06:38:03,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 06:38:04,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 17 [2024-11-09 06:38:04,588 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 06:38:04,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2024-11-09 06:38:07,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:38:07,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 202 treesize of output 174 [2024-11-09 06:38:08,515 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 06:38:08,515 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:38:08,515 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:38:08,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010138385] [2024-11-09 06:38:08,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010138385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:38:08,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:38:08,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:38:08,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386952650] [2024-11-09 06:38:08,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:38:08,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:38:08,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:38:08,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:38:08,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:38:08,521 INFO L87 Difference]: Start difference. First operand 119 states and 170 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 06:38:09,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:38:11,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:38:12,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:38:14,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:38:16,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:38:18,557 WARN L539 Checker$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 06:38:20,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:38:23,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:38:25,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:38:28,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:38:31,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:38:32,949 WARN L539 Checker$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 [0] [2024-11-09 06:38:37,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:38:37,551 INFO L93 Difference]: Finished difference Result 209 states and 306 transitions. [2024-11-09 06:38:37,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:38:37,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 17 [2024-11-09 06:38:37,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:38:37,558 INFO L225 Difference]: With dead ends: 209 [2024-11-09 06:38:37,559 INFO L226 Difference]: Without dead ends: 201 [2024-11-09 06:38:37,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:38:37,561 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 125 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 13 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:38:37,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 692 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 192 Invalid, 6 Unknown, 0 Unchecked, 29.0s Time] [2024-11-09 06:38:37,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-09 06:38:37,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 196. [2024-11-09 06:38:37,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 177 states have (on average 1.4745762711864407) internal successors, (261), 179 states have internal predecessors, (261), 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 06:38:37,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 287 transitions. [2024-11-09 06:38:37,589 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 287 transitions. Word has length 17 [2024-11-09 06:38:37,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:38:37,590 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 287 transitions. [2024-11-09 06:38:37,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 06:38:37,590 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 287 transitions. [2024-11-09 06:38:37,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 06:38:37,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:38:37,591 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] [2024-11-09 06:38:37,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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)] Forceful destruction successful, exit code 0 [2024-11-09 06:38:37,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:38:37,794 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:38:37,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:38:37,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1072516003, now seen corresponding path program 1 times [2024-11-09 06:38:37,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:38:37,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919952593] [2024-11-09 06:38:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:38:37,796 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 06:38:37,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:38:37,799 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:38:37,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:38:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:38:38,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:38:38,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:38:39,786 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 06:38:39,786 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:38:39,786 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:38:39,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919952593] [2024-11-09 06:38:39,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919952593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:38:39,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:38:39,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:38:39,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732475644] [2024-11-09 06:38:39,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:38:39,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:38:39,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:38:39,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:38:39,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:38:39,789 INFO L87 Difference]: Start difference. First operand 196 states and 287 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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 06:38:40,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:38:40,507 INFO L93 Difference]: Finished difference Result 402 states and 595 transitions. [2024-11-09 06:38:40,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:38:40,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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 21 [2024-11-09 06:38:40,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:38:40,511 INFO L225 Difference]: With dead ends: 402 [2024-11-09 06:38:40,511 INFO L226 Difference]: Without dead ends: 189 [2024-11-09 06:38:40,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:38:40,514 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 22 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:38:40,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 654 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:38:40,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-09 06:38:40,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-11-09 06:38:40,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 170 states have (on average 1.4529411764705882) internal successors, (247), 172 states have internal predecessors, (247), 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 06:38:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 273 transitions. [2024-11-09 06:38:40,532 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 273 transitions. Word has length 21 [2024-11-09 06:38:40,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:38:40,533 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 273 transitions. [2024-11-09 06:38:40,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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 06:38:40,533 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 273 transitions. [2024-11-09 06:38:40,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 06:38:40,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:38:40,537 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] [2024-11-09 06:38:40,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:38:40,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:38:40,738 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:38:40,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:38:40,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1882684605, now seen corresponding path program 1 times [2024-11-09 06:38:40,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:38:40,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895650291] [2024-11-09 06:38:40,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:38:40,739 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 06:38:40,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:38:40,741 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:38:40,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:38:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:38:42,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:38:42,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:38:47,861 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 06:38:47,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:39:12,986 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 06:39:12,987 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:39:12,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895650291] [2024-11-09 06:39:12,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895650291] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:39:12,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2004325977] [2024-11-09 06:39:12,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:39:12,988 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:39:12,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:39:12,992 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:39:12,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-09 06:39:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:39:14,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 06:39:14,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:39:18,027 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 06:39:18,028 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:39:18,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2004325977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:39:18,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:39:18,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 13] total 24 [2024-11-09 06:39:18,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961568237] [2024-11-09 06:39:18,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:39:18,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:39:18,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:39:18,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:39:18,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=483, Unknown=1, NotChecked=0, Total=552 [2024-11-09 06:39:18,031 INFO L87 Difference]: Start difference. First operand 189 states and 273 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 06:39:18,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:39:18,857 INFO L93 Difference]: Finished difference Result 389 states and 575 transitions. [2024-11-09 06:39:18,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:39:18,859 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 66 [2024-11-09 06:39:18,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:39:18,861 INFO L225 Difference]: With dead ends: 389 [2024-11-09 06:39:18,861 INFO L226 Difference]: Without dead ends: 202 [2024-11-09 06:39:18,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=68, Invalid=483, Unknown=1, NotChecked=0, Total=552 [2024-11-09 06:39:18,864 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 33 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:39:18,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 753 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 06:39:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-09 06:39:18,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 193. [2024-11-09 06:39:18,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 174 states have (on average 1.4425287356321839) internal successors, (251), 176 states have internal predecessors, (251), 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 06:39:18,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 277 transitions. [2024-11-09 06:39:18,881 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 277 transitions. Word has length 66 [2024-11-09 06:39:18,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:39:18,882 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 277 transitions. [2024-11-09 06:39:18,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 06:39:18,882 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 277 transitions. [2024-11-09 06:39:18,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 06:39:18,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:39:18,886 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] [2024-11-09 06:39:18,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:39:19,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2024-11-09 06:39:19,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 06:39:19,288 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:39:19,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:39:19,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1629842613, now seen corresponding path program 1 times [2024-11-09 06:39:19,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:39:19,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561519073] [2024-11-09 06:39:19,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:39:19,290 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 06:39:19,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:39:19,291 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:39:19,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:39:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:39:20,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:39:20,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:39:26,685 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 06:39:26,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:39:48,865 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 06:39:48,865 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:39:48,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561519073] [2024-11-09 06:39:48,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561519073] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:39:48,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [996600426] [2024-11-09 06:39:48,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:39:48,866 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:39:48,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:39:48,870 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:39:48,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-09 06:39:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:39:51,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 06:39:51,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:39:58,027 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 06:39:58,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:40:09,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [996600426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:40:09,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324794685] [2024-11-09 06:40:09,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:40:09,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:40:09,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:40:09,433 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:40:09,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 06:40:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:40:10,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 06:40:10,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:40:14,734 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 06:40:14,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:40:23,026 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 06:40:23,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324794685] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:40:23,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-09 06:40:23,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12, 13, 11, 7] total 32 [2024-11-09 06:40:23,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742272188] [2024-11-09 06:40:23,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:40:23,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:40:23,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:40:23,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:40:23,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1016, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 06:40:23,031 INFO L87 Difference]: Start difference. First operand 193 states and 277 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 06:40:24,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:40:27,127 WARN L539 Checker$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 06:40:30,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:40:33,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:40:36,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:40:38,397 WARN L539 Checker$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 06:40:40,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:40:44,499 WARN L539 Checker$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 06:40:47,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:40:48,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:40:48,304 INFO L93 Difference]: Finished difference Result 228 states and 327 transitions. [2024-11-09 06:40:48,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:40:48,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 74 [2024-11-09 06:40:48,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:40:48,313 INFO L225 Difference]: With dead ends: 228 [2024-11-09 06:40:48,314 INFO L226 Difference]: Without dead ends: 201 [2024-11-09 06:40:48,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 373 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=111, Invalid=1079, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 06:40:48,316 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 122 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:40:48,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 502 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 134 Invalid, 3 Unknown, 0 Unchecked, 24.2s Time] [2024-11-09 06:40:48,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-09 06:40:48,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 121. [2024-11-09 06:40:48,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 109 states have (on average 1.4220183486238531) internal successors, (155), 109 states have internal predecessors, (155), 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 06:40:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 167 transitions. [2024-11-09 06:40:48,332 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 167 transitions. Word has length 74 [2024-11-09 06:40:48,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:40:48,333 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 167 transitions. [2024-11-09 06:40:48,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 06:40:48,333 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 167 transitions. [2024-11-09 06:40:48,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 06:40:48,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:40:48,341 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] [2024-11-09 06:40:48,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:40:48,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2024-11-09 06:40:48,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 06:40:48,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:40:48,942 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:40:48,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:40:48,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1826270220, now seen corresponding path program 1 times [2024-11-09 06:40:48,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:40:48,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912990769] [2024-11-09 06:40:48,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:40:48,944 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 06:40:48,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:40:48,945 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:40:48,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:40:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:40:50,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:40:50,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:40:57,652 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 06:40:57,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:41:29,449 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 06:41:29,450 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:41:29,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912990769] [2024-11-09 06:41:29,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912990769] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:41:29,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1954310509] [2024-11-09 06:41:29,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:41:29,450 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:41:29,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:41:29,452 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:41:29,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-09 06:41:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:41:32,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 06:41:32,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:41:38,416 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 06:41:38,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:41:53,688 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 06:41:53,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1954310509] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:41:53,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:41:53,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12, 13, 9] total 30 [2024-11-09 06:41:53,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481841674] [2024-11-09 06:41:53,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:41:53,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:41:53,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:41:53,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:41:53,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=768, Unknown=2, NotChecked=0, Total=870 [2024-11-09 06:41:53,693 INFO L87 Difference]: Start difference. First operand 121 states and 167 transitions. Second operand has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 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 06:41:55,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:41:57,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:41:58,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:42:00,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:42:02,644 WARN L539 Checker$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 06:42:04,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:42:07,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:42:14,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:42:15,737 WARN L539 Checker$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 06:42:18,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:42:20,751 WARN L539 Checker$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 06:42:23,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:42:25,967 WARN L539 Checker$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 06:42:28,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:42:30,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:42:32,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:42:34,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:42:36,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:42:39,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:42:43,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:42:45,888 WARN L539 Checker$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 06:42:48,819 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 06:42:54,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:42:54,622 INFO L93 Difference]: Finished difference Result 193 states and 270 transitions. [2024-11-09 06:42:54,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 06:42:54,631 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 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 75 [2024-11-09 06:42:54,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:42:54,634 INFO L225 Difference]: With dead ends: 193 [2024-11-09 06:42:54,634 INFO L226 Difference]: Without dead ends: 174 [2024-11-09 06:42:54,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 35.1s TimeCoverageRelationStatistics Valid=119, Invalid=935, Unknown=2, NotChecked=0, Total=1056 [2024-11-09 06:42:54,636 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 187 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 18 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:42:54,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 952 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 284 Invalid, 11 Unknown, 0 Unchecked, 57.0s Time] [2024-11-09 06:42:54,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-09 06:42:54,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 126. [2024-11-09 06:42:54,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 112 states have (on average 1.4196428571428572) internal successors, (159), 114 states have internal predecessors, (159), 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 06:42:54,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 174 transitions. [2024-11-09 06:42:54,660 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 174 transitions. Word has length 75 [2024-11-09 06:42:54,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:42:54,661 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 174 transitions. [2024-11-09 06:42:54,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 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 06:42:54,662 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 174 transitions. [2024-11-09 06:42:54,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 06:42:54,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:42:54,669 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] [2024-11-09 06:42:54,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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)] Forceful destruction successful, exit code 0 [2024-11-09 06:42:54,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2024-11-09 06:42:55,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 06:42:55,071 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:42:55,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:42:55,072 INFO L85 PathProgramCache]: Analyzing trace with hash -2093806959, now seen corresponding path program 1 times [2024-11-09 06:42:55,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:42:55,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47720748] [2024-11-09 06:42:55,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:42:55,074 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 06:42:55,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:42:55,075 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:42:55,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:42:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:42:56,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:42:56,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:43:08,546 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 06:43:08,547 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:43:42,411 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 06:43:42,411 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:43:42,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47720748] [2024-11-09 06:43:42,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47720748] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:43:42,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [610485845] [2024-11-09 06:43:42,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:43:42,412 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:43:42,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:43:42,413 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:43:42,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-09 06:43:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:43:44,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 06:43:44,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:43:49,515 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 06:43:49,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:43:58,587 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 06:43:58,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [610485845] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:43:58,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:43:58,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 13, 6] total 26 [2024-11-09 06:43:58,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767401817] [2024-11-09 06:43:58,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:43:58,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:43:58,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:43:58,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:43:58,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2024-11-09 06:43:58,593 INFO L87 Difference]: Start difference. First operand 126 states and 174 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 06:44:01,481 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 06:44:03,485 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 06:44:05,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:44:05,775 INFO L93 Difference]: Finished difference Result 264 states and 374 transitions. [2024-11-09 06:44:05,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:44:05,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 77 [2024-11-09 06:44:05,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:44:05,782 INFO L225 Difference]: With dead ends: 264 [2024-11-09 06:44:05,782 INFO L226 Difference]: Without dead ends: 149 [2024-11-09 06:44:05,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 279 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2024-11-09 06:44:05,785 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 33 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:44:05,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 622 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2024-11-09 06:44:05,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-09 06:44:05,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-09 06:44:05,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 131 states have (on average 1.4122137404580153) internal successors, (185), 132 states have internal predecessors, (185), 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 06:44:05,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 208 transitions. [2024-11-09 06:44:05,808 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 208 transitions. Word has length 77 [2024-11-09 06:44:05,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:44:05,809 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 208 transitions. [2024-11-09 06:44:05,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 06:44:05,810 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 208 transitions. [2024-11-09 06:44:05,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 06:44:05,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:44:05,813 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] [2024-11-09 06:44:05,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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)] Ended with exit code 0 [2024-11-09 06:44:06,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2024-11-09 06:44:06,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 06:44:06,214 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:44:06,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:44:06,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1061239567, now seen corresponding path program 1 times [2024-11-09 06:44:06,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:44:06,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086916009] [2024-11-09 06:44:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:44:06,217 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 06:44:06,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:44:06,221 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:44:06,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:44:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:44:08,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:44:08,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:44:18,848 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 06:44:18,848 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:44:53,937 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 06:44:53,937 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:44:53,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086916009] [2024-11-09 06:44:53,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086916009] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:44:53,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [436795974] [2024-11-09 06:44:53,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:44:53,938 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:44:53,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:44:53,940 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:44:53,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-09 06:44:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:44:55,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:44:55,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:45:07,172 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 06:45:07,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:45:24,536 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 06:45:24,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [436795974] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:45:24,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128485417] [2024-11-09 06:45:24,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:45:24,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:45:24,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:45:24,539 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:45:24,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 06:45:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:45:25,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:45:25,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:45:48,737 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 06:45:48,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:45:58,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128485417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:45:58,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2024-11-09 06:45:58,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 8, 8, 11] total 36 [2024-11-09 06:45:58,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556283654] [2024-11-09 06:45:58,947 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2024-11-09 06:45:58,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-09 06:45:58,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:45:58,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-09 06:45:58,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1219, Unknown=2, NotChecked=0, Total=1332 [2024-11-09 06:45:58,952 INFO L87 Difference]: Start difference. First operand 149 states and 208 transitions. Second operand has 36 states, 28 states have (on average 6.5) internal successors, (182), 33 states have internal predecessors, (182), 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 06:46:01,128 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 06:46:03,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:46:05,150 WARN L539 Checker$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 06:46:06,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:46:07,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:46:10,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:46:12,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:46:14,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:46:16,500 WARN L539 Checker$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 06:46:18,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:47:06,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:47:09,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:47:11,407 WARN L539 Checker$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 06:47:13,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:47:15,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:47:23,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:47:25,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:47:35,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:47:37,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:47:39,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:48:20,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:48:22,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:48:46,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:49:01,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:49:04,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:49:38,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:49:55,898 WARN L539 Checker$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 06:49:57,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:49:59,139 WARN L539 Checker$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 06:50:01,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:50:06,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:50:08,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:50:11,113 WARN L539 Checker$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 06:50:13,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:50:15,614 WARN L539 Checker$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 06:50:17,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:50:24,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:50:32,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:50:36,357 WARN L539 Checker$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 06:50:38,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:50:40,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:50:46,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:50:49,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:50:51,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:50:53,934 WARN L539 Checker$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 06:51:09,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:51:09,014 INFO L93 Difference]: Finished difference Result 682 states and 1093 transitions. [2024-11-09 06:51:09,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-09 06:51:09,018 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 28 states have (on average 6.5) internal successors, (182), 33 states have internal predecessors, (182), 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) Word has length 85 [2024-11-09 06:51:09,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:51:09,023 INFO L225 Difference]: With dead ends: 682 [2024-11-09 06:51:09,023 INFO L226 Difference]: Without dead ends: 440 [2024-11-09 06:51:09,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 472 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2770 ImplicationChecksByTransitivity, 186.9s TimeCoverageRelationStatistics Valid=1681, Invalid=9447, Unknown=2, NotChecked=0, Total=11130 [2024-11-09 06:51:09,030 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 795 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 125 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 177.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 181.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:51:09,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 2641 Invalid, 1921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1769 Invalid, 27 Unknown, 0 Unchecked, 181.8s Time] [2024-11-09 06:51:09,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-11-09 06:51:09,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 323. [2024-11-09 06:51:09,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 284 states have (on average 1.3838028169014085) internal successors, (393), 286 states have internal predecessors, (393), 20 states have call successors, (20), 12 states have call predecessors, (20), 18 states have return successors, (49), 24 states have call predecessors, (49), 20 states have call successors, (49) [2024-11-09 06:51:09,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 462 transitions. [2024-11-09 06:51:09,113 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 462 transitions. Word has length 85 [2024-11-09 06:51:09,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:51:09,113 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 462 transitions. [2024-11-09 06:51:09,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 28 states have (on average 6.5) internal successors, (182), 33 states have internal predecessors, (182), 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 06:51:09,114 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 462 transitions. [2024-11-09 06:51:09,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-09 06:51:09,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:51:09,118 INFO L215 NwaCegarLoop]: trace histogram [4, 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] [2024-11-09 06:51:09,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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)] Ended with exit code 0 [2024-11-09 06:51:09,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2024-11-09 06:51:09,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 06:51:09,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:51:09,719 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:51:09,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:51:09,720 INFO L85 PathProgramCache]: Analyzing trace with hash 255653430, now seen corresponding path program 1 times [2024-11-09 06:51:09,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:51:09,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662845014] [2024-11-09 06:51:09,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:51:09,722 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 06:51:09,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:51:09,723 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 06:51:09,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/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 (19)] Waiting until timeout for monitored process [2024-11-09 06:51:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:51:11,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 06:51:11,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:51:22,923 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 06:51:22,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:52:08,233 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 33 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 06:52:08,233 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:52:08,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662845014] [2024-11-09 06:52:08,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662845014] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:52:08,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [420936753] [2024-11-09 06:52:08,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:52:08,235 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:52:08,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:52:08,238 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:52:08,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2024-11-09 06:52:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:52:10,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 06:52:10,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:52:23,190 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 06:52:23,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:52:40,740 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 06:52:40,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [420936753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:52:40,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910581493] [2024-11-09 06:52:40,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:52:40,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:52:40,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:52:40,744 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:52:40,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a085cc26-796f-4a5a-bf09-4126abbfcab3/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 06:52:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:52:42,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 06:52:42,178 INFO L278 TraceCheckSpWp]: Computing forward predicates...