./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/tanh_w4_r4_case_1_unsafe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/tanh_w4_r4_case_1_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E --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 473935398f0a6ff0ba1d74937237ca988d69870fe758198e21e495be92fcb8a0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:48:06,807 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:48:06,909 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 05:48:06,916 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:48:06,918 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:48:06,958 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:48:06,960 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:48:06,961 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:48:06,961 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:48:06,962 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:48:06,963 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:48:06,963 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:48:06,963 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:48:06,964 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:48:06,964 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:48:06,964 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:48:06,964 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:48:06,964 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:48:06,964 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:48:06,964 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:48:06,965 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:48:06,965 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:48:06,966 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:48:06,966 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:48:06,966 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:48:06,967 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:48:06,967 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:48:06,967 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:48:06,967 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:48:06,967 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:48:06,968 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:48:06,968 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:48:06,968 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:48:06,968 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:48:06,968 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:48:06,968 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:48:06,968 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:48:06,969 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:48:06,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:48:06,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:48:06,970 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:48:06,970 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:48:06,970 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:48:06,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:48:06,970 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:48:06,971 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:48:06,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:48:06,971 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E 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 -> 473935398f0a6ff0ba1d74937237ca988d69870fe758198e21e495be92fcb8a0 [2024-11-14 05:48:07,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:48:07,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:48:07,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:48:07,322 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:48:07,322 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:48:07,324 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/neural-networks/tanh_w4_r4_case_1_unsafe.c-amalgamation.i Unable to find full path for "g++" [2024-11-14 05:48:09,228 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:48:09,741 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:48:09,742 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/sv-benchmarks/c/neural-networks/tanh_w4_r4_case_1_unsafe.c-amalgamation.i [2024-11-14 05:48:09,803 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/data/0f5c1a36c/74f8204cd16844f481841c8a2c08087b/FLAG7bbed4d6c [2024-11-14 05:48:09,826 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/data/0f5c1a36c/74f8204cd16844f481841c8a2c08087b [2024-11-14 05:48:09,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:48:09,832 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:48:09,835 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:48:09,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:48:09,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:48:09,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:48:09" (1/1) ... [2024-11-14 05:48:09,843 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d9217a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:09, skipping insertion in model container [2024-11-14 05:48:09,844 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:48:09" (1/1) ... [2024-11-14 05:48:09,947 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:48:11,318 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_692b9f3e-4654-4949-855b-bca0779c4c82/sv-benchmarks/c/neural-networks/tanh_w4_r4_case_1_unsafe.c-amalgamation.i[71403,71416] [2024-11-14 05:48:11,716 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:629) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:3128) 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:1611) 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:2564) 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:1516) 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:3610) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1563) 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:1638) 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:3515) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2508) 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$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:48:11,725 INFO L158 Benchmark]: Toolchain (without parser) took 1890.27ms. Allocated memory is still 117.4MB. Free memory was 87.6MB in the beginning and 59.5MB in the end (delta: 28.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 05:48:11,726 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 117.4MB. Free memory is still 74.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:48:11,726 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1885.99ms. Allocated memory is still 117.4MB. Free memory was 87.3MB in the beginning and 59.5MB in the end (delta: 27.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 05:48:11,731 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 117.4MB. Free memory is still 74.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1885.99ms. Allocated memory is still 117.4MB. Free memory was 87.3MB in the beginning and 59.5MB in the end (delta: 27.8MB). Peak memory consumption was 25.2MB. 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:629) 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/tanh_w4_r4_case_1_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E --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 473935398f0a6ff0ba1d74937237ca988d69870fe758198e21e495be92fcb8a0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:48:14,722 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:48:14,854 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-14 05:48:14,865 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:48:14,866 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:48:14,892 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:48:14,892 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:48:14,892 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:48:14,893 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:48:14,893 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:48:14,893 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:48:14,893 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:48:14,893 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:48:14,893 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:48:14,893 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:48:14,893 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:48:14,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:48:14,894 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:48:14,894 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:48:14,894 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:48:14,894 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:48:14,894 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:48:14,895 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:48:14,895 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:48:14,895 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 05:48:14,895 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 05:48:14,895 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:48:14,895 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 05:48:14,895 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:48:14,895 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:48:14,895 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:48:14,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:48:14,896 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 05:48:14,896 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:48:14,896 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:48:14,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:48:14,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:48:14,896 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:48:14,896 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:48:14,896 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 05:48:14,897 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 05:48:14,897 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:48:14,897 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:48:14,897 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E 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 -> 473935398f0a6ff0ba1d74937237ca988d69870fe758198e21e495be92fcb8a0 [2024-11-14 05:48:15,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:48:15,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:48:15,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:48:15,251 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:48:15,251 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:48:15,253 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/neural-networks/tanh_w4_r4_case_1_unsafe.c-amalgamation.i Unable to find full path for "g++" [2024-11-14 05:48:17,278 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:48:17,807 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:48:17,808 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/sv-benchmarks/c/neural-networks/tanh_w4_r4_case_1_unsafe.c-amalgamation.i [2024-11-14 05:48:17,851 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/data/5367b251d/20a9967cb2804f48977221c856f762df/FLAG775927e0c [2024-11-14 05:48:18,338 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/data/5367b251d/20a9967cb2804f48977221c856f762df [2024-11-14 05:48:18,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:48:18,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:48:18,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:48:18,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:48:18,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:48:18,347 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:48:18" (1/1) ... [2024-11-14 05:48:18,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ca1c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:18, skipping insertion in model container [2024-11-14 05:48:18,348 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:48:18" (1/1) ... [2024-11-14 05:48:18,411 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:48:19,863 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_692b9f3e-4654-4949-855b-bca0779c4c82/sv-benchmarks/c/neural-networks/tanh_w4_r4_case_1_unsafe.c-amalgamation.i[71403,71416] [2024-11-14 05:48:20,352 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 05:48:20,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:48:20,443 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:48:20,558 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_692b9f3e-4654-4949-855b-bca0779c4c82/sv-benchmarks/c/neural-networks/tanh_w4_r4_case_1_unsafe.c-amalgamation.i[71403,71416] [2024-11-14 05:48:20,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:48:20,908 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:48:20,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:20 WrapperNode [2024-11-14 05:48:20,909 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:48:20,911 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:48:20,911 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:48:20,911 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:48:20,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:20" (1/1) ... [2024-11-14 05:48:20,971 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:20" (1/1) ... [2024-11-14 05:48:21,022 INFO L138 Inliner]: procedures = 780, calls = 729, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 418 [2024-11-14 05:48:21,022 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:48:21,023 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:48:21,023 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:48:21,023 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:48:21,032 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:20" (1/1) ... [2024-11-14 05:48:21,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:20" (1/1) ... [2024-11-14 05:48:21,040 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:20" (1/1) ... [2024-11-14 05:48:21,040 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:20" (1/1) ... [2024-11-14 05:48:21,067 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:20" (1/1) ... [2024-11-14 05:48:21,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:20" (1/1) ... [2024-11-14 05:48:21,078 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:20" (1/1) ... [2024-11-14 05:48:21,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:20" (1/1) ... [2024-11-14 05:48:21,097 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:48:21,098 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:48:21,098 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:48:21,098 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:48:21,103 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:20" (1/1) ... [2024-11-14 05:48:21,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:48:21,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:48:21,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:48:21,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:48:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2024-11-14 05:48:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_simpleRNN [2024-11-14 05:48:21,183 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_simpleRNN [2024-11-14 05:48:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2024-11-14 05:48:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:48:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:48:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:48:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-14 05:48:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-14 05:48:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 05:48:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 05:48:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_affine_matmul [2024-11-14 05:48:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_affine_matmul [2024-11-14 05:48:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2024-11-14 05:48:21,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2024-11-14 05:48:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:48:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 05:48:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2024-11-14 05:48:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2024-11-14 05:48:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_simpleRNNcell [2024-11-14 05:48:21,185 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_simpleRNNcell [2024-11-14 05:48:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-14 05:48:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2024-11-14 05:48:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 05:48:21,543 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:48:21,547 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:48:31,572 INFO L? ?]: Removed 121 outVars from TransFormulas that were not future-live. [2024-11-14 05:48:31,573 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:48:31,593 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:48:31,593 INFO L316 CfgBuilder]: Removed 20 assume(true) statements. [2024-11-14 05:48:31,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:48:31 BoogieIcfgContainer [2024-11-14 05:48:31,594 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:48:31,598 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:48:31,598 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:48:31,604 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:48:31,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:48:18" (1/3) ... [2024-11-14 05:48:31,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d1c4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:48:31, skipping insertion in model container [2024-11-14 05:48:31,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:48:20" (2/3) ... [2024-11-14 05:48:31,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d1c4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:48:31, skipping insertion in model container [2024-11-14 05:48:31,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:48:31" (3/3) ... [2024-11-14 05:48:31,608 INFO L112 eAbstractionObserver]: Analyzing ICFG tanh_w4_r4_case_1_unsafe.c-amalgamation.i [2024-11-14 05:48:31,626 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:48:31,627 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG tanh_w4_r4_case_1_unsafe.c-amalgamation.i that has 6 procedures, 113 locations, 1 initial locations, 21 loop locations, and 1 error locations. [2024-11-14 05:48:31,705 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:48:31,720 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;@5de3a33c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:48:31,720 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:48:31,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 99 states have (on average 1.6161616161616161) internal successors, (160), 100 states have internal predecessors, (160), 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) [2024-11-14 05:48:31,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 05:48:31,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:31,734 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:31,735 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:48:31,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:31,742 INFO L85 PathProgramCache]: Analyzing trace with hash -166156253, now seen corresponding path program 1 times [2024-11-14 05:48:31,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:31,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835154058] [2024-11-14 05:48:31,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:31,762 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 [2024-11-14 05:48:31,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:31,765 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 05:48:31,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:48:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:32,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-14 05:48:32,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:32,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:32,919 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:48:32,920 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:32,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835154058] [2024-11-14 05:48:32,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835154058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:48:32,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:48:32,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:48:32,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983069104] [2024-11-14 05:48:32,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:48:32,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 05:48:32,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:32,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 05:48:32,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:48:32,951 INFO L87 Difference]: Start difference. First operand has 113 states, 99 states have (on average 1.6161616161616161) internal successors, (160), 100 states have internal predecessors, (160), 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) [2024-11-14 05:48:32,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:32,987 INFO L93 Difference]: Finished difference Result 222 states and 348 transitions. [2024-11-14 05:48:32,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 05:48:32,989 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 [2024-11-14 05:48:32,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:32,997 INFO L225 Difference]: With dead ends: 222 [2024-11-14 05:48:32,998 INFO L226 Difference]: Without dead ends: 109 [2024-11-14 05:48:33,002 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 [2024-11-14 05:48:33,005 INFO L432 NwaCegarLoop]: 152 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, 152 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 [2024-11-14 05:48:33,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:48:33,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-14 05:48:33,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-14 05:48:33,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 96 states have (on average 1.3958333333333333) internal successors, (134), 96 states have internal predecessors, (134), 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) [2024-11-14 05:48:33,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 148 transitions. [2024-11-14 05:48:33,061 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 148 transitions. Word has length 17 [2024-11-14 05:48:33,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:33,062 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 148 transitions. [2024-11-14 05:48:33,062 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) [2024-11-14 05:48:33,062 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 148 transitions. [2024-11-14 05:48:33,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 05:48:33,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:33,064 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:33,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:48:33,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:48:33,265 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:48:33,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:33,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1059415112, now seen corresponding path program 1 times [2024-11-14 05:48:33,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:33,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836275035] [2024-11-14 05:48:33,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:33,270 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 [2024-11-14 05:48:33,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:33,272 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 05:48:33,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:48:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:34,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:48:34,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:34,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:48:34,774 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:48:34,774 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:48:34,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836275035] [2024-11-14 05:48:34,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836275035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:48:34,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:48:34,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:48:34,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051350498] [2024-11-14 05:48:34,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:48:34,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:48:34,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:48:34,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:48:34,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:48:34,778 INFO L87 Difference]: Start difference. First operand 109 states and 148 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) [2024-11-14 05:48:35,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:48:35,005 INFO L93 Difference]: Finished difference Result 119 states and 159 transitions. [2024-11-14 05:48:35,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:48:35,009 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 [2024-11-14 05:48:35,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:48:35,010 INFO L225 Difference]: With dead ends: 119 [2024-11-14 05:48:35,011 INFO L226 Difference]: Without dead ends: 101 [2024-11-14 05:48:35,011 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 [2024-11-14 05:48:35,012 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 13 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 564 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 [2024-11-14 05:48:35,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 564 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:48:35,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-14 05:48:35,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-14 05:48:35,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 89 states have (on average 1.3820224719101124) internal successors, (123), 89 states have internal predecessors, (123), 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) [2024-11-14 05:48:35,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 135 transitions. [2024-11-14 05:48:35,037 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 135 transitions. Word has length 17 [2024-11-14 05:48:35,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:48:35,037 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 135 transitions. [2024-11-14 05:48:35,038 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) [2024-11-14 05:48:35,038 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 135 transitions. [2024-11-14 05:48:35,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 05:48:35,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:48:35,038 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:48:35,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:48:35,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:48:35,239 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:48:35,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:48:35,240 INFO L85 PathProgramCache]: Analyzing trace with hash 508832549, now seen corresponding path program 1 times [2024-11-14 05:48:35,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:48:35,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245360781] [2024-11-14 05:48:35,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:48:35,241 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 [2024-11-14 05:48:35,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:48:35,249 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 05:48:35,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:48:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:48:38,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-14 05:48:38,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:48:38,506 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 05:48:38,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 57 [2024-11-14 05:48:38,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:48:38,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:48:38,731 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 05:48:38,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 25 [2024-11-14 05:48:39,035 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-14 05:48:39,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 35 [2024-11-14 05:48:39,255 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 05:48:39,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 67 [2024-11-14 05:48:39,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:48:39,526 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2024-11-14 05:48:39,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2024-11-14 05:48:39,868 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-14 05:48:39,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 35 [2024-11-14 05:48:40,111 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 05:48:40,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 57 [2024-11-14 05:48:40,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:48:40,319 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 05:48:40,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 29 [2024-11-14 05:48:40,565 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-14 05:48:40,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 35 [2024-11-14 05:48:42,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 78 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 72 [2024-11-14 05:48:47,406 INFO L349 Elim1Store]: treesize reduction 17, result has 95.3 percent of original size [2024-11-14 05:48:47,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 184 treesize of output 503 [2024-11-14 05:48:47,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 113 [2024-11-14 05:49:08,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 78 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 77 [2024-11-14 05:49:13,086 INFO L349 Elim1Store]: treesize reduction 17, result has 95.3 percent of original size [2024-11-14 05:49:13,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 184 treesize of output 503 [2024-11-14 05:49:13,385 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-14 05:49:13,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 117 [2024-11-14 05:49:31,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:49:31,214 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:49:31,214 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:49:31,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245360781] [2024-11-14 05:49:31,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245360781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:49:31,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:49:31,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 05:49:31,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006191893] [2024-11-14 05:49:31,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:49:31,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:49:31,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:49:31,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:49:31,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:49:31,216 INFO L87 Difference]: Start difference. First operand 101 states and 135 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2024-11-14 05:49:34,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:49:36,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:49:38,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:49:40,916 WARN L539 Checker$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 [0] [2024-11-14 05:49:43,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:49:45,096 WARN L539 Checker$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 [0] [2024-11-14 05:49:48,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:49:50,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:49:52,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:49:55,307 WARN L539 Checker$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 [] [2024-11-14 05:49:56,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:49:58,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:49:59,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:50:03,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:50:09,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:50:09,827 INFO L93 Difference]: Finished difference Result 189 states and 259 transitions. [2024-11-14 05:50:09,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:50:09,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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 [2024-11-14 05:50:09,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:50:09,835 INFO L225 Difference]: With dead ends: 189 [2024-11-14 05:50:09,836 INFO L226 Difference]: Without dead ends: 181 [2024-11-14 05:50:09,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:50:09,837 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 128 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 17 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:50:09,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 557 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 223 Invalid, 10 Unknown, 0 Unchecked, 38.6s Time] [2024-11-14 05:50:09,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-14 05:50:09,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 105. [2024-11-14 05:50:09,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 93 states have (on average 1.3763440860215055) internal successors, (128), 93 states have internal predecessors, (128), 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) [2024-11-14 05:50:09,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 140 transitions. [2024-11-14 05:50:09,857 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 140 transitions. Word has length 17 [2024-11-14 05:50:09,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:50:09,857 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 140 transitions. [2024-11-14 05:50:09,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2024-11-14 05:50:09,858 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 140 transitions. [2024-11-14 05:50:09,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 05:50:09,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:50:09,859 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] [2024-11-14 05:50:09,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-14 05:50:10,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:50:10,060 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:50:10,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:50:10,060 INFO L85 PathProgramCache]: Analyzing trace with hash -848229134, now seen corresponding path program 1 times [2024-11-14 05:50:10,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:50:10,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553390833] [2024-11-14 05:50:10,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:10,062 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 [2024-11-14 05:50:10,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:50:10,066 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 05:50:10,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:50:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:11,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:50:11,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:12,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:50:12,169 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:50:12,169 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:50:12,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553390833] [2024-11-14 05:50:12,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553390833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:50:12,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:50:12,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:50:12,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048684854] [2024-11-14 05:50:12,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:50:12,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:50:12,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:50:12,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:50:12,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:50:12,171 INFO L87 Difference]: Start difference. First operand 105 states and 140 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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) [2024-11-14 05:50:13,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:50:13,074 INFO L93 Difference]: Finished difference Result 207 states and 279 transitions. [2024-11-14 05:50:13,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:50:13,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 20 [2024-11-14 05:50:13,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:50:13,078 INFO L225 Difference]: With dead ends: 207 [2024-11-14 05:50:13,078 INFO L226 Difference]: Without dead ends: 100 [2024-11-14 05:50:13,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:50:13,080 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 15 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:50:13,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 516 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 05:50:13,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-14 05:50:13,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-14 05:50:13,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 88 states have (on average 1.3522727272727273) internal successors, (119), 88 states have internal predecessors, (119), 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) [2024-11-14 05:50:13,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 131 transitions. [2024-11-14 05:50:13,096 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 131 transitions. Word has length 20 [2024-11-14 05:50:13,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:50:13,096 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 131 transitions. [2024-11-14 05:50:13,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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) [2024-11-14 05:50:13,097 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 131 transitions. [2024-11-14 05:50:13,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-14 05:50:13,099 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:50:13,100 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] [2024-11-14 05:50:13,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-14 05:50:13,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:50:13,300 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:50:13,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:50:13,301 INFO L85 PathProgramCache]: Analyzing trace with hash -363630038, now seen corresponding path program 1 times [2024-11-14 05:50:13,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:50:13,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903552752] [2024-11-14 05:50:13,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:13,302 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 [2024-11-14 05:50:13,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:50:13,305 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 05:50:13,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:50:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:14,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 05:50:14,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:23,201 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:51,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:50:51,758 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:50:51,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903552752] [2024-11-14 05:50:51,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903552752] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:50:51,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1825799369] [2024-11-14 05:50:51,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:51,758 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:50:51,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:50:51,765 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:50:51,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-14 05:50:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:53,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:50:53,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:06,707 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 05:51:06,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:51:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 05:51:24,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1825799369] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:51:24,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:51:24,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12, 13, 7] total 32 [2024-11-14 05:51:24,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006252301] [2024-11-14 05:51:24,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:51:24,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:51:24,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:51:24,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:51:24,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2024-11-14 05:51:24,792 INFO L87 Difference]: Start difference. First operand 100 states and 131 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 05:51:32,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:51:32,673 INFO L93 Difference]: Finished difference Result 123 states and 158 transitions. [2024-11-14 05:51:32,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:51:32,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 64 [2024-11-14 05:51:32,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:51:32,678 INFO L225 Difference]: With dead ends: 123 [2024-11-14 05:51:32,679 INFO L226 Difference]: Without dead ends: 97 [2024-11-14 05:51:32,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 38.4s TimeCoverageRelationStatistics Valid=130, Invalid=1202, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 05:51:32,681 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 155 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:51:32,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 560 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-14 05:51:32,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-14 05:51:32,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-14 05:51:32,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 85 states have (on average 1.3411764705882352) internal successors, (114), 85 states have internal predecessors, (114), 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) [2024-11-14 05:51:32,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 126 transitions. [2024-11-14 05:51:32,694 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 126 transitions. Word has length 64 [2024-11-14 05:51:32,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:51:32,695 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 126 transitions. [2024-11-14 05:51:32,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 05:51:32,695 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 126 transitions. [2024-11-14 05:51:32,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-14 05:51:32,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:51:32,697 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] [2024-11-14 05:51:32,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-14 05:51:32,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-14 05:51:33,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:51:33,099 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:51:33,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:51:33,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1893981291, now seen corresponding path program 1 times [2024-11-14 05:51:33,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:51:33,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347177583] [2024-11-14 05:51:33,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:33,101 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 [2024-11-14 05:51:33,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:51:33,103 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 05:51:33,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-14 05:51:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:34,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 05:51:34,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:41,297 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:51:41,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:52:08,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:52:08,304 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:52:08,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347177583] [2024-11-14 05:52:08,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347177583] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:52:08,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [512638105] [2024-11-14 05:52:08,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:52:08,305 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:52:08,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:52:08,307 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:52:08,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-14 05:52:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:52:10,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:52:10,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:52:23,547 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 05:52:23,547 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:52:40,082 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 05:52:40,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [512638105] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:52:40,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:52:40,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12, 13, 7] total 32 [2024-11-14 05:52:40,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900877599] [2024-11-14 05:52:40,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:52:40,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:52:40,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:52:40,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:52:40,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2024-11-14 05:52:40,086 INFO L87 Difference]: Start difference. First operand 97 states and 126 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 05:52:48,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:52:48,803 INFO L93 Difference]: Finished difference Result 120 states and 153 transitions. [2024-11-14 05:52:48,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:52:48,807 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 65 [2024-11-14 05:52:48,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:52:48,809 INFO L225 Difference]: With dead ends: 120 [2024-11-14 05:52:48,809 INFO L226 Difference]: Without dead ends: 94 [2024-11-14 05:52:48,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 34.7s TimeCoverageRelationStatistics Valid=130, Invalid=1202, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 05:52:48,812 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 150 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:52:48,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 536 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-14 05:52:48,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-14 05:52:48,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-14 05:52:48,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 82 states have (on average 1.329268292682927) internal successors, (109), 82 states have internal predecessors, (109), 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) [2024-11-14 05:52:48,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 121 transitions. [2024-11-14 05:52:48,828 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 121 transitions. Word has length 65 [2024-11-14 05:52:48,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:52:48,829 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 121 transitions. [2024-11-14 05:52:48,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 05:52:48,829 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 121 transitions. [2024-11-14 05:52:48,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-14 05:52:48,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:52:48,832 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:52:48,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-11-14 05:52:49,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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)] Forceful destruction successful, exit code 0 [2024-11-14 05:52:49,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:52:49,233 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:52:49,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:52:49,233 INFO L85 PathProgramCache]: Analyzing trace with hash 2030022935, now seen corresponding path program 1 times [2024-11-14 05:52:49,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:52:49,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503893228] [2024-11-14 05:52:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:52:49,234 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 [2024-11-14 05:52:49,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:52:49,237 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 05:52:49,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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)] Waiting until timeout for monitored process [2024-11-14 05:52:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:52:50,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 05:52:50,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:52:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:52:57,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:53:27,213 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:53:27,213 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:53:27,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503893228] [2024-11-14 05:53:27,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503893228] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:53:27,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1259132990] [2024-11-14 05:53:27,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:53:27,214 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:53:27,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:53:27,217 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:53:27,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-14 05:53:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:53:29,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:53:29,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:53:41,524 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 05:53:41,524 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:54:00,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 05:54:00,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1259132990] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:54:00,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:54:00,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12, 13, 7] total 32 [2024-11-14 05:54:00,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712050246] [2024-11-14 05:54:00,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:54:00,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:54:00,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:54:00,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:54:00,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2024-11-14 05:54:00,679 INFO L87 Difference]: Start difference. First operand 94 states and 121 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 05:54:08,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:54:08,829 INFO L93 Difference]: Finished difference Result 117 states and 148 transitions. [2024-11-14 05:54:08,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:54:08,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 67 [2024-11-14 05:54:08,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:54:08,835 INFO L225 Difference]: With dead ends: 117 [2024-11-14 05:54:08,835 INFO L226 Difference]: Without dead ends: 91 [2024-11-14 05:54:08,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 39.0s TimeCoverageRelationStatistics Valid=130, Invalid=1202, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 05:54:08,837 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 146 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:54:08,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 414 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-14 05:54:08,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-14 05:54:08,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-14 05:54:08,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 79 states have (on average 1.3164556962025316) internal successors, (104), 79 states have internal predecessors, (104), 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) [2024-11-14 05:54:08,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2024-11-14 05:54:08,854 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 67 [2024-11-14 05:54:08,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:54:08,854 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2024-11-14 05:54:08,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 05:54:08,855 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2024-11-14 05:54:08,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-14 05:54:08,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:54:08,857 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:54:08,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2024-11-14 05:54:09,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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)] Ended with exit code 0 [2024-11-14 05:54:09,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:54:09,258 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:54:09,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:54:09,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1647618148, now seen corresponding path program 1 times [2024-11-14 05:54:09,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:54:09,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183881053] [2024-11-14 05:54:09,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:54:09,260 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 [2024-11-14 05:54:09,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:54:09,264 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 05:54:09,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:54:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:54:10,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 05:54:10,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:54:19,469 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:54:19,469 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:54:45,493 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:54:45,493 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:54:45,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183881053] [2024-11-14 05:54:45,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183881053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:54:45,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1320206440] [2024-11-14 05:54:45,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:54:45,494 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:54:45,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:54:45,496 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:54:45,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-14 05:54:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:54:47,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:54:47,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:54:51,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:54:51,899 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:54:51,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1320206440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:54:51,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:54:51,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 13] total 24 [2024-11-14 05:54:51,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286722951] [2024-11-14 05:54:51,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:54:51,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:54:51,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:54:51,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:54:51,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2024-11-14 05:54:51,902 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 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) [2024-11-14 05:54:52,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:54:52,622 INFO L93 Difference]: Finished difference Result 181 states and 235 transitions. [2024-11-14 05:54:52,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:54:52,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 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 68 [2024-11-14 05:54:52,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:54:52,624 INFO L225 Difference]: With dead ends: 181 [2024-11-14 05:54:52,624 INFO L226 Difference]: Without dead ends: 96 [2024-11-14 05:54:52,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2024-11-14 05:54:52,629 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 21 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:54:52,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 529 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 05:54:52,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-14 05:54:52,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2024-11-14 05:54:52,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 80 states have (on average 1.3125) internal successors, (105), 80 states have internal predecessors, (105), 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) [2024-11-14 05:54:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 117 transitions. [2024-11-14 05:54:52,658 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 117 transitions. Word has length 68 [2024-11-14 05:54:52,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:54:52,659 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 117 transitions. [2024-11-14 05:54:52,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 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) [2024-11-14 05:54:52,659 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 117 transitions. [2024-11-14 05:54:52,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-14 05:54:52,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:54:52,661 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 05:54:52,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-11-14 05:54:52,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-11-14 05:54:53,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:54:53,066 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:54:53,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:54:53,066 INFO L85 PathProgramCache]: Analyzing trace with hash 163706048, now seen corresponding path program 1 times [2024-11-14 05:54:53,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:54:53,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950193976] [2024-11-14 05:54:53,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:54:53,067 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 [2024-11-14 05:54:53,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:54:53,069 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 05:54:53,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:54:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:54:54,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 05:54:54,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:55:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:55:03,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:55:38,272 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:55:38,272 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:55:38,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950193976] [2024-11-14 05:55:38,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950193976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:55:38,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [75674454] [2024-11-14 05:55:38,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:55:38,273 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:55:38,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:55:38,275 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:55:38,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-14 05:55:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:55:41,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:55:41,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:55:46,425 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 05:55:46,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:55:58,162 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 05:55:58,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [75674454] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:55:58,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:55:58,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12, 13, 7] total 27 [2024-11-14 05:55:58,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403789564] [2024-11-14 05:55:58,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:55:58,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:55:58,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:55:58,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:55:58,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=616, Unknown=2, NotChecked=0, Total=702 [2024-11-14 05:55:58,164 INFO L87 Difference]: Start difference. First operand 92 states and 117 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-11-14 05:55:59,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:56:00,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:56:02,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:56:07,249 WARN L539 Checker$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 [] [2024-11-14 05:56:09,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:56:14,675 WARN L539 Checker$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 [] [2024-11-14 05:56:15,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:56:19,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:56:19,359 INFO L93 Difference]: Finished difference Result 139 states and 179 transitions. [2024-11-14 05:56:19,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:56:19,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 [2024-11-14 05:56:19,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:56:19,365 INFO L225 Difference]: With dead ends: 139 [2024-11-14 05:56:19,366 INFO L226 Difference]: Without dead ends: 123 [2024-11-14 05:56:19,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=89, Invalid=665, Unknown=2, NotChecked=0, Total=756 [2024-11-14 05:56:19,367 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 72 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 8 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:56:19,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 331 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 116 Invalid, 4 Unknown, 0 Unchecked, 20.0s Time] [2024-11-14 05:56:19,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-14 05:56:19,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 93. [2024-11-14 05:56:19,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 81 states have (on average 1.308641975308642) internal successors, (106), 81 states have internal predecessors, (106), 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) [2024-11-14 05:56:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 118 transitions. [2024-11-14 05:56:19,386 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 118 transitions. Word has length 74 [2024-11-14 05:56:19,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:56:19,387 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 118 transitions. [2024-11-14 05:56:19,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-11-14 05:56:19,387 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 118 transitions. [2024-11-14 05:56:19,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-14 05:56:19,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:56:19,389 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 05:56:19,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2024-11-14 05:56:19,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2024-11-14 05:56:19,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:56:19,790 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:56:19,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:56:19,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1221094541, now seen corresponding path program 1 times [2024-11-14 05:56:19,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:56:19,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953552157] [2024-11-14 05:56:19,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:56:19,792 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 [2024-11-14 05:56:19,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:56:19,797 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 05:56:19,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:56:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:56:21,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 05:56:21,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:56:29,242 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 05:56:29,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:57:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 05:57:02,687 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:57:02,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953552157] [2024-11-14 05:57:02,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953552157] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:57:02,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1493361261] [2024-11-14 05:57:02,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:57:02,688 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:57:02,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:57:02,695 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:57:02,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-14 05:57:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:57:06,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:57:06,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:57:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-14 05:57:12,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:57:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-14 05:57:31,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1493361261] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:57:31,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:57:31,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12, 13, 9] total 30 [2024-11-14 05:57:31,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409564827] [2024-11-14 05:57:31,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:57:31,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 05:57:31,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:57:31,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 05:57:31,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=768, Unknown=2, NotChecked=0, Total=870 [2024-11-14 05:57:31,323 INFO L87 Difference]: Start difference. First operand 93 states and 118 transitions. Second operand has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 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) [2024-11-14 05:57:32,617 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 [] [2024-11-14 05:57:34,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:57:35,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:57:36,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:57:38,908 WARN L539 Checker$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 [] [2024-11-14 05:57:41,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:57:43,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:57:51,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:57:53,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:57:58,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:58:00,961 WARN L539 Checker$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 [] [2024-11-14 05:58:03,680 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 [] [2024-11-14 05:58:07,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:58:07,473 INFO L93 Difference]: Finished difference Result 144 states and 186 transitions. [2024-11-14 05:58:07,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 05:58:07,477 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 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 [2024-11-14 05:58:07,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:58:07,479 INFO L225 Difference]: With dead ends: 144 [2024-11-14 05:58:07,479 INFO L226 Difference]: Without dead ends: 127 [2024-11-14 05:58:07,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 38.7s TimeCoverageRelationStatistics Valid=119, Invalid=935, Unknown=2, NotChecked=0, Total=1056 [2024-11-14 05:58:07,480 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 116 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 17 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:58:07,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 539 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 217 Invalid, 6 Unknown, 0 Unchecked, 31.7s Time] [2024-11-14 05:58:07,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-14 05:58:07,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 98. [2024-11-14 05:58:07,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 84 states have (on average 1.3095238095238095) internal successors, (110), 86 states have internal predecessors, (110), 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) [2024-11-14 05:58:07,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 125 transitions. [2024-11-14 05:58:07,502 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 125 transitions. Word has length 75 [2024-11-14 05:58:07,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:58:07,502 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 125 transitions. [2024-11-14 05:58:07,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 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) [2024-11-14 05:58:07,503 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 125 transitions. [2024-11-14 05:58:07,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-14 05:58:07,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:58:07,504 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 05:58:07,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:58:07,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2024-11-14 05:58:07,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:58:07,905 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:58:07,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:58:07,906 INFO L85 PathProgramCache]: Analyzing trace with hash 43080317, now seen corresponding path program 1 times [2024-11-14 05:58:07,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:58:07,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929618187] [2024-11-14 05:58:07,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:58:07,907 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 [2024-11-14 05:58:07,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:58:07,910 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 05:58:07,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-11-14 05:58:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:58:09,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 05:58:09,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:58:17,442 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 05:58:17,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:58:45,129 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 05:58:45,129 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:58:45,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929618187] [2024-11-14 05:58:45,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929618187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:58:45,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2092939294] [2024-11-14 05:58:45,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:58:45,130 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:58:45,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:58:45,132 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:58:45,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-14 05:58:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:58:47,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:58:47,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:58:52,500 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 05:58:52,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:59:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 05:59:01,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2092939294] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:59:01,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:59:01,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 13, 6] total 26 [2024-11-14 05:59:01,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380448719] [2024-11-14 05:59:01,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:59:01,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:59:01,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:59:01,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:59:01,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2024-11-14 05:59:01,998 INFO L87 Difference]: Start difference. First operand 98 states and 125 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2024-11-14 05:59:04,619 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 [] [2024-11-14 05:59:06,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:59:08,624 WARN L539 Checker$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 [] [2024-11-14 05:59:09,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:59:09,742 INFO L93 Difference]: Finished difference Result 205 states and 268 transitions. [2024-11-14 05:59:09,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:59:09,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 76 [2024-11-14 05:59:09,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:59:09,748 INFO L225 Difference]: With dead ends: 205 [2024-11-14 05:59:09,748 INFO L226 Difference]: Without dead ends: 117 [2024-11-14 05:59:09,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2024-11-14 05:59:09,751 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 21 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:59:09,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 338 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 3 Unknown, 0 Unchecked, 7.7s Time] [2024-11-14 05:59:09,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-14 05:59:09,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-14 05:59:09,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 99 states have (on average 1.303030303030303) internal successors, (129), 100 states have internal predecessors, (129), 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) [2024-11-14 05:59:09,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 152 transitions. [2024-11-14 05:59:09,770 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 152 transitions. Word has length 76 [2024-11-14 05:59:09,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:59:09,771 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 152 transitions. [2024-11-14 05:59:09,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2024-11-14 05:59:09,771 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 152 transitions. [2024-11-14 05:59:09,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-14 05:59:09,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:59:09,773 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 05:59:09,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2024-11-14 05:59:09,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-11-14 05:59:10,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 05:59:10,174 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:59:10,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:59:10,174 INFO L85 PathProgramCache]: Analyzing trace with hash 382479393, now seen corresponding path program 1 times [2024-11-14 05:59:10,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:59:10,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287918666] [2024-11-14 05:59:10,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:59:10,176 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 [2024-11-14 05:59:10,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:59:10,178 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 05:59:10,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-11-14 05:59:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:59:12,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 05:59:12,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:59:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 05:59:22,111 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:59:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 05:59:57,370 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:59:57,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287918666] [2024-11-14 05:59:57,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287918666] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:59:57,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2012729752] [2024-11-14 05:59:57,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:59:57,371 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:59:57,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:59:57,374 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:59:57,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2024-11-14 05:59:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 06:00:00,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 06:00:00,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 06:00:09,223 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 06:00:09,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 06:00:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 06:00:23,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2012729752] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 06:00:23,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037717105] [2024-11-14 06:00:23,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 06:00:23,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 06:00:23,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 06:00:23,223 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 06:00:23,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_692b9f3e-4654-4949-855b-bca0779c4c82/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-14 06:00:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 06:00:24,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 06:00:24,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 06:00:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 06:00:47,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 06:00:59,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037717105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 06:00:59,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2024-11-14 06:00:59,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 8, 8, 11] total 36 [2024-11-14 06:00:59,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473136616] [2024-11-14 06:00:59,938 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2024-11-14 06:00:59,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-14 06:00:59,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 06:00:59,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-14 06:00:59,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1219, Unknown=2, NotChecked=0, Total=1332 [2024-11-14 06:00:59,942 INFO L87 Difference]: Start difference. First operand 117 states and 152 transitions. Second operand has 36 states, 28 states have (on average 5.964285714285714) internal successors, (167), 33 states have internal predecessors, (167), 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) [2024-11-14 06:01:01,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 06:01:02,724 WARN L539 Checker$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 [] [2024-11-14 06:01:05,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 06:01:07,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 06:01:09,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 06:01:11,313 WARN L539 Checker$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 [] [2024-11-14 06:01:13,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 06:01:15,474 WARN L539 Checker$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 [] [2024-11-14 06:01:17,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 06:01:48,288 WARN L539 Checker$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 [] [2024-11-14 06:01:50,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 06:01:53,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 06:01:56,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 06:01:58,285 WARN L539 Checker$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 [] [2024-11-14 06:01:59,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 06:02:01,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 06:02:08,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 06:02:10,887 WARN L539 Checker$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 [] [2024-11-14 06:02:12,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 06:02:20,861 WARN L539 Checker$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 [] [2024-11-14 06:02:22,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 06:02:25,920 WARN L539 Checker$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 [] [2024-11-14 06:02:27,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 06:02:28,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 06:02:30,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 06:02:44,264 WARN L539 Checker$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 [] [2024-11-14 06:03:02,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 06:03:04,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 06:03:07,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 06:03:10,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []