./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32ffc80931eec32719df7516ac9cef0d342f12da4e57d4e3de062230f15f921e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:26:46,811 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:26:46,967 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-21 22:26:46,982 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:26:46,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:26:47,036 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:26:47,039 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:26:47,040 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:26:47,041 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:26:47,048 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:26:47,048 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:26:47,049 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:26:47,050 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:26:47,052 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:26:47,053 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:26:47,054 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:26:47,054 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:26:47,055 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:26:47,055 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:26:47,058 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:26:47,058 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:26:47,059 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:26:47,060 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:26:47,060 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:26:47,061 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 22:26:47,062 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:26:47,062 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:26:47,063 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:26:47,063 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:26:47,065 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:26:47,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:26:47,067 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:26:47,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:26:47,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:26:47,068 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:26:47,068 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:26:47,069 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:26:47,069 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:26:47,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:26:47,070 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:26:47,070 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:26:47,071 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:26:47,071 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:26:47,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:26:47,072 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32ffc80931eec32719df7516ac9cef0d342f12da4e57d4e3de062230f15f921e [2023-11-21 22:26:47,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:26:47,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:26:47,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:26:47,471 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:26:47,472 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:26:47,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i [2023-11-21 22:26:50,827 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:26:51,142 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:26:51,143 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i [2023-11-21 22:26:51,154 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/data/532e62a81/02e0c8bf67a34040b8f70de33cd6c759/FLAG57ee78e2e [2023-11-21 22:26:51,176 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/data/532e62a81/02e0c8bf67a34040b8f70de33cd6c759 [2023-11-21 22:26:51,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:26:51,182 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:26:51,184 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:26:51,185 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:26:51,193 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:26:51,194 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:26:51" (1/1) ... [2023-11-21 22:26:51,195 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c6804d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:51, skipping insertion in model container [2023-11-21 22:26:51,196 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:26:51" (1/1) ... [2023-11-21 22:26:51,230 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:26:51,448 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:610) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:2213) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:245) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1486) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:269) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:728) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:284) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1427) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:222) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleCompoundStatement(CHandler.java:1088) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1073) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:234) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:383) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1512) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:157) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3412) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2432) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:611) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:133) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:191) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:117) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:147) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-21 22:26:51,454 INFO L158 Benchmark]: Toolchain (without parser) took 270.93ms. Allocated memory is still 176.2MB. Free memory was 129.6MB in the beginning and 120.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-21 22:26:51,455 INFO L158 Benchmark]: CDTParser took 2.29ms. Allocated memory is still 146.8MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:26:51,457 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.57ms. Allocated memory is still 176.2MB. Free memory was 129.0MB in the beginning and 120.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-21 22:26:51,459 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.29ms. Allocated memory is still 146.8MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.57ms. Allocated memory is still 176.2MB. Free memory was 129.0MB in the beginning and 120.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:610) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32ffc80931eec32719df7516ac9cef0d342f12da4e57d4e3de062230f15f921e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:26:54,522 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:26:54,669 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Bitvector.epf [2023-11-21 22:26:54,676 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:26:54,677 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:26:54,730 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:26:54,731 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:26:54,732 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:26:54,734 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:26:54,739 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:26:54,740 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:26:54,740 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:26:54,741 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:26:54,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:26:54,744 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:26:54,745 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:26:54,745 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:26:54,746 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:26:54,746 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:26:54,747 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:26:54,747 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:26:54,749 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:26:54,749 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:26:54,750 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:26:54,750 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:26:54,751 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 22:26:54,751 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:26:54,752 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:26:54,752 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:26:54,753 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:26:54,753 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:26:54,754 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:26:54,754 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:26:54,754 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:26:54,754 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:26:54,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:26:54,755 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:26:54,755 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:26:54,755 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:26:54,756 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:26:54,756 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:26:54,756 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:26:54,756 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:26:54,757 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:26:54,757 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:26:54,758 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:26:54,758 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:26:54,758 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32ffc80931eec32719df7516ac9cef0d342f12da4e57d4e3de062230f15f921e [2023-11-21 22:26:55,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:26:55,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:26:55,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:26:55,254 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:26:55,255 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:26:55,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i [2023-11-21 22:26:58,429 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:26:58,670 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:26:58,670 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i [2023-11-21 22:26:58,681 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/data/3b3570a6c/badcefd935934b49bfb540982556a58a/FLAG49600ae94 [2023-11-21 22:26:58,701 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/data/3b3570a6c/badcefd935934b49bfb540982556a58a [2023-11-21 22:26:58,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:26:58,709 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:26:58,713 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:26:58,713 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:26:58,718 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:26:58,719 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:26:58" (1/1) ... [2023-11-21 22:26:58,720 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b19fd1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:58, skipping insertion in model container [2023-11-21 22:26:58,721 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:26:58" (1/1) ... [2023-11-21 22:26:58,756 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:26:59,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:26:59,060 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:26:59,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:26:59,139 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:26:59,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:59 WrapperNode [2023-11-21 22:26:59,140 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:26:59,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:26:59,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:26:59,141 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:26:59,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:59" (1/1) ... [2023-11-21 22:26:59,164 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:59" (1/1) ... [2023-11-21 22:26:59,194 INFO L138 Inliner]: procedures = 18, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2023-11-21 22:26:59,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:26:59,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:26:59,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:26:59,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:26:59,209 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:59" (1/1) ... [2023-11-21 22:26:59,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:59" (1/1) ... [2023-11-21 22:26:59,215 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:59" (1/1) ... [2023-11-21 22:26:59,227 INFO L187 HeapSplitter]: Split 10 memory accesses to 2 slices as follows [2, 8] [2023-11-21 22:26:59,228 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:59" (1/1) ... [2023-11-21 22:26:59,228 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:59" (1/1) ... [2023-11-21 22:26:59,240 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:59" (1/1) ... [2023-11-21 22:26:59,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:59" (1/1) ... [2023-11-21 22:26:59,247 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:59" (1/1) ... [2023-11-21 22:26:59,249 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:59" (1/1) ... [2023-11-21 22:26:59,254 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:26:59,255 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:26:59,255 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:26:59,255 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:26:59,256 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:59" (1/1) ... [2023-11-21 22:26:59,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:26:59,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:59,290 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:59,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:26:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:26:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-21 22:26:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-21 22:26:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:26:59,343 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:26:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:26:59,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:26:59,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 22:26:59,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 22:26:59,473 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:26:59,475 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:27:02,681 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:27:02,825 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:27:02,825 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:27:02,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:27:02 BoogieIcfgContainer [2023-11-21 22:27:02,827 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:27:02,829 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:27:02,829 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:27:02,832 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:27:02,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:26:58" (1/3) ... [2023-11-21 22:27:02,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dedf858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:27:02, skipping insertion in model container [2023-11-21 22:27:02,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:59" (2/3) ... [2023-11-21 22:27:02,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dedf858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:27:02, skipping insertion in model container [2023-11-21 22:27:02,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:27:02" (3/3) ... [2023-11-21 22:27:02,835 INFO L112 eAbstractionObserver]: Analyzing ICFG knuth_unwindbound10.i [2023-11-21 22:27:02,854 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:27:02,854 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 22:27:02,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:27:02,912 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@10d3d194, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:27:02,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-21 22:27:02,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 10 states have (on average 1.5) internal successors, (15), 12 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:27:02,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 22:27:02,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:27:02,925 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:02,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-21 22:27:02,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:02,935 INFO L85 PathProgramCache]: Analyzing trace with hash 627492777, now seen corresponding path program 1 times [2023-11-21 22:27:02,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:27:02,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085300984] [2023-11-21 22:27:02,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:02,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:27:02,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:27:02,952 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:27:02,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-21 22:27:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:03,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-21 22:27:03,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:27:03,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:27:03,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:27:03,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085300984] [2023-11-21 22:27:03,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085300984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:03,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:03,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:27:03,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955692346] [2023-11-21 22:27:03,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:03,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 22:27:03,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:27:03,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 22:27:03,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 22:27:03,363 INFO L87 Difference]: Start difference. First operand has 21 states, 10 states have (on average 1.5) internal successors, (15), 12 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:27:03,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:27:03,495 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2023-11-21 22:27:03,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 22:27:03,501 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2023-11-21 22:27:03,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:27:03,506 INFO L225 Difference]: With dead ends: 23 [2023-11-21 22:27:03,507 INFO L226 Difference]: Without dead ends: 18 [2023-11-21 22:27:03,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 22:27:03,513 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:27:03,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:27:03,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-21 22:27:03,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-21 22:27:03,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:27:03,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-11-21 22:27:03,553 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2023-11-21 22:27:03,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:27:03,555 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-11-21 22:27:03,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:27:03,555 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-11-21 22:27:03,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 22:27:03,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:27:03,557 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:03,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:03,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:27:03,772 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-21 22:27:03,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:03,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2022560349, now seen corresponding path program 1 times [2023-11-21 22:27:03,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:27:03,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142297055] [2023-11-21 22:27:03,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:03,774 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:27:03,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:27:03,776 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:27:03,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-21 22:27:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:04,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:27:04,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:27:04,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:27:04,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:27:04,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142297055] [2023-11-21 22:27:04,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142297055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:04,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:04,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:04,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079077154] [2023-11-21 22:27:04,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:04,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:27:04,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:27:04,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:27:04,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:27:04,589 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:27:05,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:27:05,137 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2023-11-21 22:27:05,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:27:05,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 11 [2023-11-21 22:27:05,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:27:05,139 INFO L225 Difference]: With dead ends: 23 [2023-11-21 22:27:05,139 INFO L226 Difference]: Without dead ends: 22 [2023-11-21 22:27:05,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:27:05,142 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:27:05,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 37 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:27:05,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-21 22:27:05,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2023-11-21 22:27:05,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:27:05,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-11-21 22:27:05,153 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 11 [2023-11-21 22:27:05,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:27:05,154 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-11-21 22:27:05,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:27:05,154 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-11-21 22:27:05,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-21 22:27:05,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:27:05,156 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:05,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:05,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:27:05,370 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-21 22:27:05,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:05,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1141899866, now seen corresponding path program 1 times [2023-11-21 22:27:05,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:27:05,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290884739] [2023-11-21 22:27:05,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:05,372 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:27:05,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:27:05,374 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:27:05,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-21 22:27:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:05,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:27:05,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:07,242 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:27:07,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:27:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:27:08,553 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:27:08,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290884739] [2023-11-21 22:27:08,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290884739] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:27:08,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:27:08,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-11-21 22:27:08,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606503364] [2023-11-21 22:27:08,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:27:08,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:27:08,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:27:08,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:27:08,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:27:08,557 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-21 22:27:14,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:27:14,540 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2023-11-21 22:27:14,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-21 22:27:14,541 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 28 [2023-11-21 22:27:14,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:27:14,543 INFO L225 Difference]: With dead ends: 55 [2023-11-21 22:27:14,543 INFO L226 Difference]: Without dead ends: 54 [2023-11-21 22:27:14,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:27:14,546 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 34 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:27:14,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 52 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-21 22:27:14,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-21 22:27:14,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-21 22:27:14,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-21 22:27:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2023-11-21 22:27:14,568 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 28 [2023-11-21 22:27:14,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:27:14,568 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2023-11-21 22:27:14,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-21 22:27:14,569 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2023-11-21 22:27:14,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-21 22:27:14,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:27:14,572 INFO L195 NwaCegarLoop]: trace histogram [16, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:14,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:14,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:27:14,777 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-21 22:27:14,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:14,778 INFO L85 PathProgramCache]: Analyzing trace with hash -140034205, now seen corresponding path program 2 times [2023-11-21 22:27:14,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:27:14,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787750788] [2023-11-21 22:27:14,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:27:14,779 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:27:14,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:27:14,780 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:27:14,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d45b83e5-0a0d-428d-bcfc-f7dbc5be7ad8/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-21 22:27:15,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:27:15,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:27:15,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:27:15,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:20,597 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 258 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-21 22:27:20,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:27:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-21 22:27:26,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:27:26,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787750788] [2023-11-21 22:27:26,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787750788] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:27:26,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:27:26,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2023-11-21 22:27:26,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174373117] [2023-11-21 22:27:26,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:27:26,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-21 22:27:26,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:27:26,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-21 22:27:26,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2023-11-21 22:27:26,426 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand has 22 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 22 states have internal predecessors, (57), 10 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 10 states have call predecessors, (36), 10 states have call successors, (36)