./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7d8666e561276f52fdb57f95324433fec798c5d47b9bb4ca4cdc06eae6ff06b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 14:34:24,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:34:24,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:34:24,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:34:24,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:34:24,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:34:24,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:34:24,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:34:24,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:34:24,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:34:24,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:34:24,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:34:24,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:34:24,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:34:24,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:34:24,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:34:24,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:34:24,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:34:24,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:34:24,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:34:24,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:34:24,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:34:24,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:34:24,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:34:24,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:34:24,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:34:24,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:34:24,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:34:24,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:34:24,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:34:24,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:34:24,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:34:24,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:34:24,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:34:24,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:34:24,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:34:24,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:34:24,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:34:24,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:34:24,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:34:24,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:34:24,810 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 14:34:24,829 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:34:24,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:34:24,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:34:24,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:34:24,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:34:24,831 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:34:24,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:34:24,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:34:24,832 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:34:24,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:34:24,832 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:34:24,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:34:24,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:34:24,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:34:24,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:34:24,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:34:24,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:34:24,833 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:34:24,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:34:24,834 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:34:24,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:34:24,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:34:24,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:34:24,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:34:24,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:34:24,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:34:24,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:34:24,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:34:24,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:34:24,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:34:24,836 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:34:24,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:34:24,836 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:34:24,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:34:24,837 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:34:24,837 INFO L138 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_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7d8666e561276f52fdb57f95324433fec798c5d47b9bb4ca4cdc06eae6ff06b [2022-12-13 14:34:25,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:34:25,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:34:25,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:34:25,052 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:34:25,052 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:34:25,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i [2022-12-13 14:34:27,649 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:34:27,796 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:34:27,797 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i [2022-12-13 14:34:27,803 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/data/b22032a40/f3fc16e5fcd84c8b9f2f59b3dedb3928/FLAG89fdb305e [2022-12-13 14:34:27,817 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/data/b22032a40/f3fc16e5fcd84c8b9f2f59b3dedb3928 [2022-12-13 14:34:27,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:34:27,821 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:34:27,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:34:27,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:34:27,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:34:27,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:34:27" (1/1) ... [2022-12-13 14:34:27,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2372879f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:34:27, skipping insertion in model container [2022-12-13 14:34:27,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:34:27" (1/1) ... [2022-12-13 14:34:27,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:34:27,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:34:27,967 WARN L237 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_4faffedf-07ca-4611-b82a-1c1f8e799545/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i[948,961] [2022-12-13 14:34:27,977 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:806) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:2063) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:242) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) 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:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1420) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1094) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1496) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3320) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2395) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2022-12-13 14:34:27,980 INFO L158 Benchmark]: Toolchain (without parser) took 159.11ms. Allocated memory is still 169.9MB. Free memory was 116.1MB in the beginning and 107.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 14:34:27,981 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 119.5MB. Free memory was 93.4MB in the beginning and 93.3MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:34:27,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.80ms. Allocated memory is still 169.9MB. Free memory was 115.9MB in the beginning and 107.2MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 14:34:27,982 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 119.5MB. Free memory was 93.4MB in the beginning and 93.3MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 156.80ms. Allocated memory is still 169.9MB. Free memory was 115.9MB in the beginning and 107.2MB in the end (delta: 8.7MB). 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:806) 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_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7d8666e561276f52fdb57f95324433fec798c5d47b9bb4ca4cdc06eae6ff06b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 14:34:29,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:34:29,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:34:29,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:34:29,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:34:29,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:34:29,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:34:29,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:34:29,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:34:29,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:34:29,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:34:29,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:34:29,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:34:29,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:34:29,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:34:29,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:34:29,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:34:29,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:34:29,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:34:29,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:34:29,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:34:29,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:34:29,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:34:29,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:34:29,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:34:29,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:34:29,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:34:29,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:34:29,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:34:29,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:34:29,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:34:29,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:34:29,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:34:29,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:34:29,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:34:29,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:34:29,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:34:29,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:34:29,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:34:29,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:34:29,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:34:29,554 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-12-13 14:34:29,568 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:34:29,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:34:29,569 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:34:29,569 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:34:29,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:34:29,569 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:34:29,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:34:29,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:34:29,570 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:34:29,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:34:29,570 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:34:29,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:34:29,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:34:29,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:34:29,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:34:29,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:34:29,571 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 14:34:29,571 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 14:34:29,571 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 14:34:29,571 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:34:29,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:34:29,571 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:34:29,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:34:29,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:34:29,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:34:29,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:34:29,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:34:29,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:34:29,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:34:29,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:34:29,572 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 14:34:29,572 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 14:34:29,572 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:34:29,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:34:29,572 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:34:29,572 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:34:29,573 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 14:34:29,573 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:34:29,573 INFO L138 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_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7d8666e561276f52fdb57f95324433fec798c5d47b9bb4ca4cdc06eae6ff06b [2022-12-13 14:34:29,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:34:29,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:34:29,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:34:29,805 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:34:29,806 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:34:29,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i [2022-12-13 14:34:32,409 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:34:32,578 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:34:32,578 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i [2022-12-13 14:34:32,584 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/data/859c9f5dd/c2f59af1295244279a06640c1201ca21/FLAGf3d3647bd [2022-12-13 14:34:32,998 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/data/859c9f5dd/c2f59af1295244279a06640c1201ca21 [2022-12-13 14:34:33,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:34:33,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:34:33,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:34:33,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:34:33,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:34:33,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:34:33" (1/1) ... [2022-12-13 14:34:33,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8032c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:34:33, skipping insertion in model container [2022-12-13 14:34:33,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:34:33" (1/1) ... [2022-12-13 14:34:33,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:34:33,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:34:33,132 WARN L237 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_4faffedf-07ca-4611-b82a-1c1f8e799545/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i[948,961] [2022-12-13 14:34:33,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:34:33,161 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:34:33,171 WARN L237 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_4faffedf-07ca-4611-b82a-1c1f8e799545/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i[948,961] [2022-12-13 14:34:33,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:34:33,193 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:34:33,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:34:33 WrapperNode [2022-12-13 14:34:33,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:34:33,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:34:33,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:34:33,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:34:33,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:34:33" (1/1) ... [2022-12-13 14:34:33,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:34:33" (1/1) ... [2022-12-13 14:34:33,227 INFO L138 Inliner]: procedures = 18, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 74 [2022-12-13 14:34:33,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:34:33,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:34:33,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:34:33,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:34:33,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:34:33" (1/1) ... [2022-12-13 14:34:33,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:34:33" (1/1) ... [2022-12-13 14:34:33,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:34:33" (1/1) ... [2022-12-13 14:34:33,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:34:33" (1/1) ... [2022-12-13 14:34:33,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:34:33" (1/1) ... [2022-12-13 14:34:33,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:34:33" (1/1) ... [2022-12-13 14:34:33,260 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:34:33" (1/1) ... [2022-12-13 14:34:33,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:34:33" (1/1) ... [2022-12-13 14:34:33,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:34:33,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:34:33,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:34:33,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:34:33,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:34:33" (1/1) ... [2022-12-13 14:34:33,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:34:33,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:34:33,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:34:33,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:34:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:34:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 14:34:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 14:34:33,324 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 14:34:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:34:33,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:34:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 14:34:33,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 14:34:33,385 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:34:33,387 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:34:36,183 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:34:36,190 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:34:36,190 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 14:34:36,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:34:36 BoogieIcfgContainer [2022-12-13 14:34:36,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:34:36,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:34:36,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:34:36,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:34:36,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:34:33" (1/3) ... [2022-12-13 14:34:36,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41fafa84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:34:36, skipping insertion in model container [2022-12-13 14:34:36,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:34:33" (2/3) ... [2022-12-13 14:34:36,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41fafa84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:34:36, skipping insertion in model container [2022-12-13 14:34:36,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:34:36" (3/3) ... [2022-12-13 14:34:36,202 INFO L112 eAbstractionObserver]: Analyzing ICFG knuth_valuebound20.i [2022-12-13 14:34:36,218 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:34:36,218 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 14:34:36,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:34:36,257 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=LoopsAndPotentialCycles, 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;@1c0fe985, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:34:36,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 14:34:36,260 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 14:34:36,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 14:34:36,265 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:34:36,266 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:34:36,266 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:34:36,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:34:36,270 INFO L85 PathProgramCache]: Analyzing trace with hash 919095715, now seen corresponding path program 1 times [2022-12-13 14:34:36,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:34:36,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614533296] [2022-12-13 14:34:36,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:34:36,282 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 [2022-12-13 14:34:36,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:34:36,283 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 14:34:36,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 14:34:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:34:36,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 14:34:36,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:34:36,621 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 14:34:36,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:34:36,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:34:36,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614533296] [2022-12-13 14:34:36,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614533296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:34:36,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:34:36,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:34:36,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264766783] [2022-12-13 14:34:36,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:34:36,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 14:34:36,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:34:36,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 14:34:36,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 14:34:36,648 INFO L87 Difference]: Start difference. First operand has 31 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:34:36,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:34:36,663 INFO L93 Difference]: Finished difference Result 59 states and 92 transitions. [2022-12-13 14:34:36,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 14:34:36,665 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-12-13 14:34:36,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:34:36,670 INFO L225 Difference]: With dead ends: 59 [2022-12-13 14:34:36,670 INFO L226 Difference]: Without dead ends: 27 [2022-12-13 14:34:36,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 14:34:36,675 INFO L413 NwaCegarLoop]: 40 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, 40 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 [2022-12-13 14:34:36,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:34:36,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-13 14:34:36,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-12-13 14:34:36,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 14:34:36,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-12-13 14:34:36,700 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 29 [2022-12-13 14:34:36,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:34:36,700 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-12-13 14:34:36,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:34:36,700 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-12-13 14:34:36,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 14:34:36,701 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:34:36,701 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:34:36,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 14:34:36,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 14:34:36,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:34:36,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:34:36,907 INFO L85 PathProgramCache]: Analyzing trace with hash -960358297, now seen corresponding path program 1 times [2022-12-13 14:34:36,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:34:36,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259276146] [2022-12-13 14:34:36,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:34:36,911 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 [2022-12-13 14:34:36,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:34:36,912 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 14:34:36,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 14:34:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:34:39,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 14:34:39,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:35:18,743 WARN L233 SmtUtils]: Spent 10.37s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:35:46,890 WARN L233 SmtUtils]: Spent 10.36s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:36:01,556 WARN L837 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| (_ BitVec 32))) (and (not (= (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4|) (let ((.cse0 (bvadd (_ bv4294967294 32) |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|))) (let ((.cse2 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| .cse0)) (.cse1 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|)) (.cse3 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|)))) (bvadd (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| .cse0) |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|)) (bvneg (bvmul |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| (bvmul (_ bv4 32) .cse1))) (bvmul (bvmul .cse2 |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|) (_ bv4 32)) (bvneg (bvmul |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| (bvadd (bvmul (_ bv8 32) .cse3) (bvmul .cse2 (_ bv8 32))))) (bvmul (_ bv8 32) .cse1) (bvmul (_ bv4 32) (bvmul .cse3 |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|))))))) (bvule |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| (_ bv20 32)) (bvule |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| (_ bv20 32)))) is different from false [2022-12-13 14:36:03,576 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| (_ BitVec 32))) (and (not (= (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4|) (let ((.cse0 (bvadd (_ bv4294967294 32) |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|))) (let ((.cse2 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| .cse0)) (.cse1 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|)) (.cse3 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|)))) (bvadd (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| .cse0) |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|)) (bvneg (bvmul |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| (bvmul (_ bv4 32) .cse1))) (bvmul (bvmul .cse2 |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|) (_ bv4 32)) (bvneg (bvmul |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| (bvadd (bvmul (_ bv8 32) .cse3) (bvmul .cse2 (_ bv8 32))))) (bvmul (_ bv8 32) .cse1) (bvmul (_ bv4 32) (bvmul .cse3 |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|))))))) (bvule |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| (_ bv20 32)) (bvule |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| (_ bv20 32)))) is different from true [2022-12-13 14:36:03,577 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 14:36:03,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:36:23,370 WARN L859 $PredicateComparison]: unable to prove that (= (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse1 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|))) (.cse3 (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (.cse0 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse2))) (bvadd (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvadd (bvmul (_ bv8 32) .cse0) (bvmul (_ bv8 32) .cse1)))) (bvmul (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse2)) (_ bv4 32)) (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse1)) (bvmul (_ bv8 32) .cse3) (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) .cse3))) (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse0))))) (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|)) is different from true [2022-12-13 14:36:32,573 WARN L859 $PredicateComparison]: unable to prove that (or (= (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse1 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|))) (.cse3 (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (.cse0 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse2))) (bvadd (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvadd (bvmul (_ bv8 32) .cse0) (bvmul (_ bv8 32) .cse1)))) (bvmul (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse2)) (_ bv4 32)) (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse1)) (bvmul (_ bv8 32) .cse3) (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) .cse3))) (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse0))))) (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|)) (not (bvugt |c_ULTIMATE.start_main_~a~0#1| (_ bv2 32)))) is different from true [2022-12-13 14:36:43,130 WARN L859 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ BitVec 32))) (or (= (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5|) (let ((.cse1 (bvadd |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv4294967294 32)))) (let ((.cse2 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|))) (.cse0 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (.cse3 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse1))) (bvadd (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (bvmul (_ bv4 32) .cse0))) (bvmul (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse1) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) (_ bv4 32)) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| .cse2)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (bvadd (bvmul .cse3 (_ bv8 32)) (bvmul (_ bv8 32) .cse2)))) (bvmul (_ bv8 32) .cse0) (bvmul (_ bv4 32) (bvmul .cse3 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)))))) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv2 32)))) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2022-12-13 14:37:02,154 WARN L859 $PredicateComparison]: unable to prove that (or (= (_ bv0 32) c_assume_abort_if_not_~cond) (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ BitVec 32))) (or (= (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5|) (let ((.cse1 (bvadd |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv4294967294 32)))) (let ((.cse2 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|))) (.cse0 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (.cse3 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse1))) (bvadd (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (bvmul (_ bv4 32) .cse0))) (bvmul (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse1) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) (_ bv4 32)) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| .cse2)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (bvadd (bvmul .cse3 (_ bv8 32)) (bvmul (_ bv8 32) .cse2)))) (bvmul (_ bv8 32) .cse0) (bvmul (_ bv4 32) (bvmul .cse3 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)))))) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv2 32)))) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2022-12-13 14:37:24,577 WARN L859 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1| (_ BitVec 32))) (or (not (bvugt |ULTIMATE.start_main_~a~0#1| (_ bv2 32))) (= (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|) (let ((.cse3 (bvadd |ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse1 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse3)) (.cse0 (bvurem |c_ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse2 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|)))) (bvadd (bvneg (bvmul |ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) .cse0))) (bvmul (_ bv4 32) (bvmul |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~a~0#1| .cse1)) (bvneg (bvmul |ULTIMATE.start_main_~a~0#1| (bvadd (bvmul (_ bv8 32) .cse1) (bvmul .cse2 (_ bv8 32))))) (bvmul (_ bv8 32) .cse0) (bvmul (_ bv4 32) (bvmul .cse2 |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv4 32) (bvmul |ULTIMATE.start_main_~a~0#1| (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse3))))))) (not (bvule |ULTIMATE.start_main_~a~0#1| (_ bv20 32))))) is different from true [2022-12-13 14:37:24,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:37:24,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259276146] [2022-12-13 14:37:24,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259276146] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:37:24,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1611823569] [2022-12-13 14:37:24,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:37:24,579 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:37:24,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:37:24,581 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:37:24,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-13 14:37:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:35,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 14:37:35,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:38:28,485 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 14:38:28,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:38:49,287 WARN L859 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ BitVec 32))) (or (= (let ((.cse0 (bvadd |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ bv4294967294 32)))) (let ((.cse1 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)) (.cse2 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| .cse0)) (.cse3 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)))) (bvadd (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| .cse0))) (bvmul (_ bv8 32) .cse1) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| .cse2)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (bvmul (_ bv4 32) .cse1))) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| .cse3)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (bvadd (bvmul .cse2 (_ bv8 32)) (bvmul (_ bv8 32) .cse3))))))) (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11|)) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ bv2 32)))) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2022-12-13 14:39:08,448 WARN L859 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ BitVec 32))) (or (= (let ((.cse0 (bvadd |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ bv4294967294 32)))) (let ((.cse1 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)) (.cse2 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| .cse0)) (.cse3 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)))) (bvadd (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| .cse0))) (bvmul (_ bv8 32) .cse1) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| .cse2)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (bvmul (_ bv4 32) .cse1))) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| .cse3)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (bvadd (bvmul .cse2 (_ bv8 32)) (bvmul (_ bv8 32) .cse3))))))) (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11|)) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ bv2 32)))) (= (_ bv0 32) c_assume_abort_if_not_~cond) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2022-12-13 14:39:28,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1611823569] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:39:28,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:39:28,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2022-12-13 14:39:28,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110563792] [2022-12-13 14:39:28,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:39:28,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 14:39:28,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:39:28,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 14:39:28,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=131, Unknown=14, NotChecked=232, Total=420 [2022-12-13 14:39:28,447 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 14:39:33,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:39:34,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:40:14,139 WARN L233 SmtUtils]: Spent 29.18s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:40:16,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:40:18,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:40:20,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:40:22,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:40:25,070 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (exists ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| (_ BitVec 32))) (and (not (= (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4|) (let ((.cse1 (bvadd (_ bv4294967294 32) |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|))) (let ((.cse3 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| .cse1)) (.cse2 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|)) (.cse4 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|)))) (bvadd (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| .cse1) |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|)) (bvneg (bvmul |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| (bvmul (_ bv4 32) .cse2))) (bvmul (bvmul .cse3 |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|) (_ bv4 32)) (bvneg (bvmul |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| (bvadd (bvmul (_ bv8 32) .cse4) (bvmul .cse3 (_ bv8 32))))) (bvmul (_ bv8 32) .cse2) (bvmul (_ bv4 32) (bvmul .cse4 |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1|))))))) (bvule |v_ULTIMATE.start_main_~d~0#1_BEFORE_CALL_1| (_ bv20 32)) (bvule |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| (_ bv20 32)))))) (and (or (= (_ bv1 32) c___VERIFIER_assert_~cond) (and .cse0 (= (_ bv0 32) c___VERIFIER_assert_~cond))) (or (and (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)) .cse0) (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))) .cse0)) is different from false [2022-12-13 14:40:28,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:40:30,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:40:33,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:40:36,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:40:38,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:40:42,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:40:44,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:40:48,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:48,755 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2022-12-13 14:40:48,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 14:40:48,781 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2022-12-13 14:40:48,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:48,782 INFO L225 Difference]: With dead ends: 44 [2022-12-13 14:40:48,782 INFO L226 Difference]: Without dead ends: 42 [2022-12-13 14:40:48,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 107.6s TimeCoverageRelationStatistics Valid=53, Invalid=175, Unknown=18, NotChecked=306, Total=552 [2022-12-13 14:40:48,783 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 28 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 38.9s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:48,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 99 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 11 Unknown, 44 Unchecked, 38.9s Time] [2022-12-13 14:40:48,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-12-13 14:40:48,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2022-12-13 14:40:48,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-13 14:40:48,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-12-13 14:40:48,796 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 29 [2022-12-13 14:40:48,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:48,796 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-12-13 14:40:48,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 14:40:48,796 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-12-13 14:40:48,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-13 14:40:48,797 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:48,797 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:48,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 14:40:49,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-13 14:40:49,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 14:40:49,200 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:49,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:49,202 INFO L85 PathProgramCache]: Analyzing trace with hash -603494572, now seen corresponding path program 1 times [2022-12-13 14:40:49,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:40:49,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340754261] [2022-12-13 14:40:49,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:49,204 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 [2022-12-13 14:40:49,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:40:49,208 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 14:40:49,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 14:40:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:49,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:40:49,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:49,898 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 14:40:49,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:49,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:40:49,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340754261] [2022-12-13 14:40:49,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340754261] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:49,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:40:49,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:40:49,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990855023] [2022-12-13 14:40:49,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:49,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:40:49,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:40:49,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:40:49,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:40:49,901 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 14:40:51,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:51,066 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2022-12-13 14:40:51,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:40:51,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-12-13 14:40:51,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:51,076 INFO L225 Difference]: With dead ends: 46 [2022-12-13 14:40:51,076 INFO L226 Difference]: Without dead ends: 44 [2022-12-13 14:40:51,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:40:51,077 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 8 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:51,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 135 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 14:40:51,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-13 14:40:51,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2022-12-13 14:40:51,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-13 14:40:51,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-12-13 14:40:51,087 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 34 [2022-12-13 14:40:51,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:51,088 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-12-13 14:40:51,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 14:40:51,088 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-12-13 14:40:51,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-13 14:40:51,090 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:51,090 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:51,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-12-13 14:40:51,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 14:40:51,292 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:51,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:51,293 INFO L85 PathProgramCache]: Analyzing trace with hash -127108025, now seen corresponding path program 1 times [2022-12-13 14:40:51,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:40:51,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556319372] [2022-12-13 14:40:51,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:51,295 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:40:51,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:40:51,298 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 14:40:51,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 14:40:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:54,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 14:40:54,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:41:21,212 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:42:18,223 WARN L233 SmtUtils]: Spent 10.88s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:42:52,303 WARN L233 SmtUtils]: Spent 11.04s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:43:11,356 WARN L837 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_18| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13| (_ BitVec 32))) (let ((.cse8 (bvadd (_ bv4294967294 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13|))) (let ((.cse1 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_18| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13|)) (.cse6 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_18| .cse8)) (.cse5 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_18| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13|)))) (let ((.cse4 (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_18|)) (.cse0 (bvmul (_ bv4 32) (bvmul .cse5 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13|))) (.cse2 (bvmul (_ bv4 32) (bvmul .cse6 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13|))) (.cse3 (bvmul (_ bv8 32) .cse1)) (.cse7 (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_18| .cse8) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13|)))) (and (not (= (bvadd .cse0 (bvneg (bvmul (bvmul (_ bv4 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13|) .cse1)) .cse2 .cse3 (bvneg .cse4) (bvneg (bvmul (bvadd (bvmul (_ bv4 32) .cse5) (bvmul (_ bv4 32) .cse6)) (bvmul (_ bv2 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13|))) .cse7) (_ bv0 32))) (bvule |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_18| (_ bv20 32)) (= .cse4 (bvadd (bvneg (bvmul (bvadd (bvmul (_ bv8 32) .cse5) (bvmul (_ bv8 32) .cse6)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13|)) .cse0 .cse2 (bvneg (bvmul (bvmul (_ bv4 32) .cse1) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13|)) .cse3 .cse7)) (bvule |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13| (_ bv20 32))))))) is different from false [2022-12-13 14:43:13,377 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_18| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13| (_ BitVec 32))) (let ((.cse8 (bvadd (_ bv4294967294 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13|))) (let ((.cse1 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_18| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13|)) (.cse6 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_18| .cse8)) (.cse5 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_18| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13|)))) (let ((.cse4 (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_18|)) (.cse0 (bvmul (_ bv4 32) (bvmul .cse5 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13|))) (.cse2 (bvmul (_ bv4 32) (bvmul .cse6 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13|))) (.cse3 (bvmul (_ bv8 32) .cse1)) (.cse7 (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_18| .cse8) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13|)))) (and (not (= (bvadd .cse0 (bvneg (bvmul (bvmul (_ bv4 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13|) .cse1)) .cse2 .cse3 (bvneg .cse4) (bvneg (bvmul (bvadd (bvmul (_ bv4 32) .cse5) (bvmul (_ bv4 32) .cse6)) (bvmul (_ bv2 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13|))) .cse7) (_ bv0 32))) (bvule |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_18| (_ bv20 32)) (= .cse4 (bvadd (bvneg (bvmul (bvadd (bvmul (_ bv8 32) .cse5) (bvmul (_ bv8 32) .cse6)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13|)) .cse0 .cse2 (bvneg (bvmul (bvmul (_ bv4 32) .cse1) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13|)) .cse3 .cse7)) (bvule |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_13| (_ bv20 32))))))) is different from true [2022-12-13 14:43:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 14:43:13,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:44:02,868 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse8 (bvadd |c_ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse1 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse8)) (.cse0 (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (.cse2 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)))) (let ((.cse4 (bvmul (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse8)) (_ bv4 32))) (.cse5 (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse2))) (.cse6 (bvmul (_ bv8 32) .cse0)) (.cse7 (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse1))) (.cse3 (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|))) (or (= (bvadd (bvneg (bvmul .cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~a~0#1|))) (bvneg (bvmul (bvadd (bvmul (_ bv4 32) .cse1) (bvmul (_ bv4 32) .cse2)) (bvmul (_ bv2 32) |c_ULTIMATE.start_main_~a~0#1|))) (bvneg .cse3) .cse4 .cse5 .cse6 .cse7) (_ bv0 32)) (not (= (bvadd (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvadd (bvmul (_ bv8 32) .cse1) (bvmul (_ bv8 32) .cse2)))) .cse4 .cse5 .cse6 (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) .cse0))) .cse7) .cse3)))))) is different from true [2022-12-13 14:44:16,748 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse8 (bvadd |c_ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse1 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse8)) (.cse0 (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (.cse2 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)))) (let ((.cse4 (bvmul (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse8)) (_ bv4 32))) (.cse5 (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse2))) (.cse6 (bvmul (_ bv8 32) .cse0)) (.cse7 (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1| .cse1))) (.cse3 (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|))) (or (= (bvadd (bvneg (bvmul .cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~a~0#1|))) (bvneg (bvmul (bvadd (bvmul (_ bv4 32) .cse1) (bvmul (_ bv4 32) .cse2)) (bvmul (_ bv2 32) |c_ULTIMATE.start_main_~a~0#1|))) (bvneg .cse3) .cse4 .cse5 .cse6 .cse7) (_ bv0 32)) (not (= (bvadd (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvadd (bvmul (_ bv8 32) .cse1) (bvmul (_ bv8 32) .cse2)))) .cse4 .cse5 .cse6 (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) .cse0))) .cse7) .cse3)) (not (bvugt |c_ULTIMATE.start_main_~a~0#1| (_ bv2 32))))))) is different from true [2022-12-13 14:44:31,794 WARN L859 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16| (_ BitVec 32))) (let ((.cse8 (bvadd (_ bv4294967294 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) (let ((.cse1 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21| .cse8)) (.cse2 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) (.cse0 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) (let ((.cse3 (bvmul (_ bv8 32) .cse0)) (.cse4 (bvmul (bvmul .cse2 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|) (_ bv4 32))) (.cse5 (bvmul (_ bv4 32) (bvmul .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) (.cse6 (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21| .cse8) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) (.cse7 (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21|))) (or (not (= (bvadd (bvneg (bvmul (bvmul (_ bv4 32) .cse0) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|)) (bvneg (bvmul (bvadd (bvmul (_ bv8 32) .cse1) (bvmul (_ bv8 32) .cse2)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|)) .cse3 .cse4 .cse5 .cse6) .cse7)) (= (bvadd .cse3 .cse4 (bvneg (bvmul (bvmul (_ bv4 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|) .cse0)) (bvneg (bvmul (bvadd (bvmul (_ bv4 32) .cse2) (bvmul (_ bv4 32) .cse1)) (bvmul (_ bv2 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) .cse5 .cse6 (bvneg .cse7)) (_ bv0 32)) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16| (_ bv2 32))))))) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2022-12-13 14:44:59,623 WARN L859 $PredicateComparison]: unable to prove that (or (= (_ bv0 32) c_assume_abort_if_not_~cond) (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16| (_ BitVec 32))) (let ((.cse8 (bvadd (_ bv4294967294 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) (let ((.cse1 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21| .cse8)) (.cse2 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) (.cse0 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) (let ((.cse3 (bvmul (_ bv8 32) .cse0)) (.cse4 (bvmul (bvmul .cse2 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|) (_ bv4 32))) (.cse5 (bvmul (_ bv4 32) (bvmul .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) (.cse6 (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21| .cse8) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) (.cse7 (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_21|))) (or (not (= (bvadd (bvneg (bvmul (bvmul (_ bv4 32) .cse0) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|)) (bvneg (bvmul (bvadd (bvmul (_ bv8 32) .cse1) (bvmul (_ bv8 32) .cse2)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|)) .cse3 .cse4 .cse5 .cse6) .cse7)) (= (bvadd .cse3 .cse4 (bvneg (bvmul (bvmul (_ bv4 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|) .cse0)) (bvneg (bvmul (bvadd (bvmul (_ bv4 32) .cse2) (bvmul (_ bv4 32) .cse1)) (bvmul (_ bv2 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16|))) .cse5 .cse6 (bvneg .cse7)) (_ bv0 32)) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_16| (_ bv2 32))))))) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2022-12-13 14:45:30,611 WARN L859 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1| (_ BitVec 32))) (let ((.cse8 (bvadd |ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse4 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse1 (bvurem |c_ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse3 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse8))) (let ((.cse2 (bvmul (_ bv4 32) (bvmul |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~a~0#1| .cse3))) (.cse0 (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|)) (.cse5 (bvmul (_ bv8 32) .cse1)) (.cse6 (bvmul (_ bv4 32) (bvmul .cse4 |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse7 (bvmul (_ bv4 32) (bvmul |ULTIMATE.start_main_~a~0#1| (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse8))))) (or (not (= .cse0 (bvadd (bvneg (bvmul |ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) .cse1))) .cse2 (bvneg (bvmul |ULTIMATE.start_main_~a~0#1| (bvadd (bvmul (_ bv8 32) .cse3) (bvmul .cse4 (_ bv8 32))))) .cse5 .cse6 .cse7))) (= (_ bv0 32) (bvadd .cse2 (bvneg (bvmul (bvmul |ULTIMATE.start_main_~a~0#1| (_ bv2 32)) (bvadd (bvmul (_ bv4 32) .cse3) (bvmul .cse4 (_ bv4 32))))) (bvneg .cse0) .cse5 .cse6 .cse7 (bvneg (bvmul (bvmul (_ bv4 32) |ULTIMATE.start_main_~a~0#1|) .cse1)))) (not (bvugt |ULTIMATE.start_main_~a~0#1| (_ bv2 32))) (not (bvule |ULTIMATE.start_main_~a~0#1| (_ bv20 32)))))))) is different from true [2022-12-13 14:45:30,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:45:30,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556319372] [2022-12-13 14:45:30,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556319372] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:45:30,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1415233539] [2022-12-13 14:45:30,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:45:30,613 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:45:30,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:45:30,614 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:45:30,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4faffedf-07ca-4611-b82a-1c1f8e799545/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-13 14:45:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:39,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 14:45:39,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:47:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 14:47:08,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:47:50,033 WARN L859 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| (_ BitVec 32))) (let ((.cse8 (bvadd (_ bv4294967294 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|))) (let ((.cse2 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|)) (.cse0 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|))) (.cse1 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31| .cse8))) (let ((.cse3 (bvmul (_ bv4 32) (bvmul .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|))) (.cse7 (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31|)) (.cse4 (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| .cse0))) (.cse5 (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31| .cse8) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|))) (.cse6 (bvmul (_ bv8 32) .cse2))) (or (not (= (bvadd (bvneg (bvmul (bvadd (bvmul (_ bv8 32) .cse0) (bvmul .cse1 (_ bv8 32))) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| (bvmul (_ bv4 32) .cse2))) .cse3 .cse4 .cse5 .cse6) .cse7)) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| (_ bv2 32)) (= (_ bv0 32) (bvadd (bvneg (bvmul (bvmul (_ bv4 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|) .cse2)) .cse3 (bvneg .cse7) (bvneg (bvmul (bvmul (_ bv2 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|) (bvadd (bvmul (_ bv4 32) .cse0) (bvmul (_ bv4 32) .cse1)))) .cse4 .cse5 .cse6))))))) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2022-12-13 14:48:17,782 WARN L859 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| (_ BitVec 32))) (let ((.cse8 (bvadd (_ bv4294967294 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|))) (let ((.cse2 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|)) (.cse0 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|))) (.cse1 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31| .cse8))) (let ((.cse3 (bvmul (_ bv4 32) (bvmul .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|))) (.cse7 (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31|)) (.cse4 (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| .cse0))) (.cse5 (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_31| .cse8) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|))) (.cse6 (bvmul (_ bv8 32) .cse2))) (or (not (= (bvadd (bvneg (bvmul (bvadd (bvmul (_ bv8 32) .cse0) (bvmul .cse1 (_ bv8 32))) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|)) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| (bvmul (_ bv4 32) .cse2))) .cse3 .cse4 .cse5 .cse6) .cse7)) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25| (_ bv2 32)) (= (_ bv0 32) (bvadd (bvneg (bvmul (bvmul (_ bv4 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|) .cse2)) .cse3 (bvneg .cse7) (bvneg (bvmul (bvmul (_ bv2 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_25|) (bvadd (bvmul (_ bv4 32) .cse0) (bvmul (_ bv4 32) .cse1)))) .cse4 .cse5 .cse6))))))) (= (_ bv0 32) c_assume_abort_if_not_~cond) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2022-12-13 14:48:46,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1415233539] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:48:46,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:48:46,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2022-12-13 14:48:46,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898048222] [2022-12-13 14:48:46,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:48:46,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 14:48:46,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:48:46,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 14:48:46,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=226, Unknown=18, NotChecked=296, Total=600 [2022-12-13 14:48:46,605 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 14 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 14:48:50,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:48:54,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.42s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:48:56,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:48:59,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:49:01,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:49:14,695 WARN L233 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 63 DAG size of output: 6 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:49:16,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:49:18,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:49:20,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]