./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/mods.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/mods.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G --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 f15d84a1f588b4a2fae1a1f53311fed1d9572550b31409f886696465cdc8f8ba --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 14:13:13,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 14:13:13,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 14:13:13,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 14:13:13,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 14:13:13,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 14:13:13,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 14:13:13,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 14:13:13,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 14:13:13,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 14:13:13,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 14:13:13,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 14:13:13,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 14:13:13,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 14:13:13,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 14:13:13,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 14:13:13,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 14:13:13,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 14:13:13,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 14:13:13,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 14:13:13,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 14:13:13,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 14:13:13,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 14:13:13,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 14:13:13,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 14:13:13,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 14:13:13,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 14:13:13,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 14:13:13,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 14:13:13,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 14:13:13,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 14:13:13,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 14:13:13,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 14:13:13,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 14:13:13,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 14:13:13,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 14:13:13,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 14:13:13,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 14:13:13,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 14:13:13,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 14:13:13,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 14:13:13,917 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 14:13:13,967 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 14:13:13,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 14:13:13,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 14:13:13,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 14:13:13,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 14:13:13,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 14:13:13,977 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 14:13:13,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 14:13:13,977 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 14:13:13,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 14:13:13,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 14:13:13,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 14:13:13,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 14:13:13,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 14:13:13,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 14:13:13,980 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 14:13:13,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 14:13:13,980 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 14:13:13,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 14:13:13,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 14:13:13,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 14:13:13,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 14:13:13,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:13:13,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 14:13:13,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 14:13:13,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 14:13:13,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 14:13:13,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 14:13:13,983 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 14:13:13,983 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 14:13:13,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 14:13:13,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 14:13:13,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f15d84a1f588b4a2fae1a1f53311fed1d9572550b31409f886696465cdc8f8ba [2021-11-23 14:13:14,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 14:13:14,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 14:13:14,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 14:13:14,293 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 14:13:14,294 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 14:13:14,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/array-fpi/mods.c [2021-11-23 14:13:14,359 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/data/1247451fc/0c4cf41790f5430da5898d4f4d8e3fa4/FLAG7134a02a1 [2021-11-23 14:13:14,859 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 14:13:14,859 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/sv-benchmarks/c/array-fpi/mods.c [2021-11-23 14:13:14,879 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/data/1247451fc/0c4cf41790f5430da5898d4f4d8e3fa4/FLAG7134a02a1 [2021-11-23 14:13:15,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/data/1247451fc/0c4cf41790f5430da5898d4f4d8e3fa4 [2021-11-23 14:13:15,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 14:13:15,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 14:13:15,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 14:13:15,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 14:13:15,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 14:13:15,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:13:15" (1/1) ... [2021-11-23 14:13:15,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d8882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:15, skipping insertion in model container [2021-11-23 14:13:15,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:13:15" (1/1) ... [2021-11-23 14:13:15,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 14:13:15,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 14:13:15,354 WARN L230 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_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/sv-benchmarks/c/array-fpi/mods.c[587,600] [2021-11-23 14:13:15,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:13:15,393 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 14:13:15,406 WARN L230 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_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/sv-benchmarks/c/array-fpi/mods.c[587,600] [2021-11-23 14:13:15,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:13:15,429 INFO L208 MainTranslator]: Completed translation [2021-11-23 14:13:15,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:15 WrapperNode [2021-11-23 14:13:15,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 14:13:15,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 14:13:15,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 14:13:15,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 14:13:15,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:15" (1/1) ... [2021-11-23 14:13:15,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:15" (1/1) ... [2021-11-23 14:13:15,469 INFO L137 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 104 [2021-11-23 14:13:15,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 14:13:15,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 14:13:15,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 14:13:15,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 14:13:15,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:15" (1/1) ... [2021-11-23 14:13:15,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:15" (1/1) ... [2021-11-23 14:13:15,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:15" (1/1) ... [2021-11-23 14:13:15,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:15" (1/1) ... [2021-11-23 14:13:15,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:15" (1/1) ... [2021-11-23 14:13:15,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:15" (1/1) ... [2021-11-23 14:13:15,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:15" (1/1) ... [2021-11-23 14:13:15,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 14:13:15,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 14:13:15,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 14:13:15,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 14:13:15,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:15" (1/1) ... [2021-11-23 14:13:15,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:13:15,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:13:15,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 14:13:15,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 14:13:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 14:13:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 14:13:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 14:13:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 14:13:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 14:13:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 14:13:15,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 14:13:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 14:13:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 14:13:15,667 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 14:13:15,669 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 14:13:15,922 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 14:13:15,928 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 14:13:15,928 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-23 14:13:15,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:13:15 BoogieIcfgContainer [2021-11-23 14:13:15,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 14:13:15,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 14:13:15,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 14:13:15,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 14:13:15,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:13:15" (1/3) ... [2021-11-23 14:13:15,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8ceab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:13:15, skipping insertion in model container [2021-11-23 14:13:15,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:15" (2/3) ... [2021-11-23 14:13:15,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8ceab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:13:15, skipping insertion in model container [2021-11-23 14:13:15,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:13:15" (3/3) ... [2021-11-23 14:13:15,940 INFO L111 eAbstractionObserver]: Analyzing ICFG mods.c [2021-11-23 14:13:15,945 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 14:13:15,945 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 14:13:15,995 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 14:13:16,029 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 14:13:16,029 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 14:13:16,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:13:16,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 14:13:16,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:13:16,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:13:16,052 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:13:16,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:13:16,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1389277550, now seen corresponding path program 1 times [2021-11-23 14:13:16,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:13:16,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951988918] [2021-11-23 14:13:16,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:13:16,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:13:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:13:16,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:13:16,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:13:16,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951988918] [2021-11-23 14:13:16,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951988918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:13:16,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:13:16,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:13:16,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197716161] [2021-11-23 14:13:16,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:13:16,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 14:13:16,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:13:16,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 14:13:16,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 14:13:16,272 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:13:16,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:13:16,289 INFO L93 Difference]: Finished difference Result 50 states and 72 transitions. [2021-11-23 14:13:16,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:13:16,292 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-23 14:13:16,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:13:16,300 INFO L225 Difference]: With dead ends: 50 [2021-11-23 14:13:16,300 INFO L226 Difference]: Without dead ends: 23 [2021-11-23 14:13:16,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 14:13:16,307 INFO L933 BasicCegarLoop]: 32 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, 32 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 [2021-11-23 14:13:16,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:13:16,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-23 14:13:16,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-23 14:13:16,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:13:16,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-23 14:13:16,341 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2021-11-23 14:13:16,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:13:16,342 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-23 14:13:16,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:13:16,343 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-11-23 14:13:16,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 14:13:16,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:13:16,344 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:13:16,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 14:13:16,345 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:13:16,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:13:16,346 INFO L85 PathProgramCache]: Analyzing trace with hash 796930410, now seen corresponding path program 1 times [2021-11-23 14:13:16,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:13:16,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288225779] [2021-11-23 14:13:16,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:13:16,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:13:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:13:16,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:13:16,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:13:16,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288225779] [2021-11-23 14:13:16,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288225779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:13:16,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:13:16,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:13:16,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800689112] [2021-11-23 14:13:16,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:13:16,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:13:16,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:13:16,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:13:16,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:13:16,427 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:13:16,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:13:16,511 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2021-11-23 14:13:16,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:13:16,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-23 14:13:16,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:13:16,514 INFO L225 Difference]: With dead ends: 53 [2021-11-23 14:13:16,514 INFO L226 Difference]: Without dead ends: 37 [2021-11-23 14:13:16,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:13:16,520 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 41 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:13:16,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 17 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:13:16,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-23 14:13:16,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2021-11-23 14:13:16,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:13:16,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-11-23 14:13:16,537 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 16 [2021-11-23 14:13:16,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:13:16,538 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-11-23 14:13:16,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:13:16,541 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-11-23 14:13:16,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 14:13:16,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:13:16,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:13:16,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 14:13:16,547 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:13:16,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:13:16,549 INFO L85 PathProgramCache]: Analyzing trace with hash 495241442, now seen corresponding path program 1 times [2021-11-23 14:13:16,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:13:16,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328697862] [2021-11-23 14:13:16,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:13:16,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:13:16,583 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:13:16,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721271643] [2021-11-23 14:13:16,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:13:16,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:13:16,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:13:16,591 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:13:16,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 14:13:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:13:16,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-23 14:13:16,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:13:16,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-23 14:13:16,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 14:13:16,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 14:13:16,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-23 14:13:17,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-23 14:13:17,260 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-23 14:13:17,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 50 [2021-11-23 14:13:17,539 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-23 14:13:17,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 36 [2021-11-23 14:13:17,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:13:17,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:13:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:13:18,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:13:18,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328697862] [2021-11-23 14:13:18,616 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:13:18,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721271643] [2021-11-23 14:13:18,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721271643] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:13:18,616 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:13:18,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-11-23 14:13:18,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473344657] [2021-11-23 14:13:18,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:13:18,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 14:13:18,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:13:18,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 14:13:18,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-11-23 14:13:18,620 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 21 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:13:19,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:13:19,769 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2021-11-23 14:13:19,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 14:13:19,776 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-23 14:13:19,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:13:19,778 INFO L225 Difference]: With dead ends: 50 [2021-11-23 14:13:19,779 INFO L226 Difference]: Without dead ends: 48 [2021-11-23 14:13:19,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2021-11-23 14:13:19,781 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 14:13:19,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 128 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 214 Invalid, 0 Unknown, 11 Unchecked, 0.7s Time] [2021-11-23 14:13:19,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-23 14:13:19,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2021-11-23 14:13:19,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:13:19,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2021-11-23 14:13:19,792 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 24 [2021-11-23 14:13:19,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:13:19,793 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2021-11-23 14:13:19,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:13:19,793 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2021-11-23 14:13:19,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 14:13:19,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:13:19,794 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:13:19,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 14:13:20,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-23 14:13:20,016 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:13:20,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:13:20,016 INFO L85 PathProgramCache]: Analyzing trace with hash 831040416, now seen corresponding path program 2 times [2021-11-23 14:13:20,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:13:20,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088786141] [2021-11-23 14:13:20,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:13:20,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:13:20,040 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:13:20,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872664340] [2021-11-23 14:13:20,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 14:13:20,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:13:20,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:13:20,042 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:13:20,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 14:13:20,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 14:13:20,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:13:20,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 14:13:20,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:13:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 14:13:20,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:13:20,265 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 14:13:20,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:13:20,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088786141] [2021-11-23 14:13:20,265 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:13:20,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872664340] [2021-11-23 14:13:20,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872664340] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:13:20,266 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:13:20,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-23 14:13:20,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469183901] [2021-11-23 14:13:20,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:13:20,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 14:13:20,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:13:20,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 14:13:20,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 14:13:20,268 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:13:20,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:13:20,447 INFO L93 Difference]: Finished difference Result 106 states and 123 transitions. [2021-11-23 14:13:20,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 14:13:20,448 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-23 14:13:20,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:13:20,452 INFO L225 Difference]: With dead ends: 106 [2021-11-23 14:13:20,452 INFO L226 Difference]: Without dead ends: 61 [2021-11-23 14:13:20,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-23 14:13:20,457 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 46 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:13:20,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 55 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:13:20,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-23 14:13:20,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42. [2021-11-23 14:13:20,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:13:20,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2021-11-23 14:13:20,480 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 26 [2021-11-23 14:13:20,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:13:20,481 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2021-11-23 14:13:20,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:13:20,481 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2021-11-23 14:13:20,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 14:13:20,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:13:20,486 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:13:20,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 14:13:20,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:13:20,704 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:13:20,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:13:20,704 INFO L85 PathProgramCache]: Analyzing trace with hash -756951010, now seen corresponding path program 3 times [2021-11-23 14:13:20,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:13:20,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881211724] [2021-11-23 14:13:20,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:13:20,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:13:20,724 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:13:20,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [28781382] [2021-11-23 14:13:20,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 14:13:20,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:13:20,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:13:20,726 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:13:20,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 14:13:20,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-23 14:13:20,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:13:20,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 14:13:20,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:13:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 14:13:20,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:13:20,971 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 14:13:20,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:13:20,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881211724] [2021-11-23 14:13:20,971 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:13:20,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28781382] [2021-11-23 14:13:20,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28781382] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:13:20,972 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:13:20,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-23 14:13:20,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313247277] [2021-11-23 14:13:20,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:13:20,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 14:13:20,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:13:20,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 14:13:20,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 14:13:20,974 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:13:21,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:13:21,125 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2021-11-23 14:13:21,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 14:13:21,126 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-23 14:13:21,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:13:21,127 INFO L225 Difference]: With dead ends: 59 [2021-11-23 14:13:21,127 INFO L226 Difference]: Without dead ends: 50 [2021-11-23 14:13:21,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-11-23 14:13:21,128 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 74 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:13:21,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 38 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:13:21,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-23 14:13:21,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2021-11-23 14:13:21,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:13:21,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-11-23 14:13:21,134 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 28 [2021-11-23 14:13:21,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:13:21,134 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-11-23 14:13:21,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:13:21,135 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-11-23 14:13:21,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-23 14:13:21,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:13:21,136 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:13:21,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 14:13:21,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:13:21,352 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:13:21,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:13:21,352 INFO L85 PathProgramCache]: Analyzing trace with hash -826292134, now seen corresponding path program 4 times [2021-11-23 14:13:21,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:13:21,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048307000] [2021-11-23 14:13:21,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:13:21,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:13:21,373 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:13:21,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904314318] [2021-11-23 14:13:21,373 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 14:13:21,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:13:21,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:13:21,374 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:13:21,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 14:13:21,442 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 14:13:21,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:13:21,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-23 14:13:21,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:13:21,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 14:13:21,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:21,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-23 14:13:21,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:21,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:21,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-23 14:13:21,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:21,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:13:21,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:21,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2021-11-23 14:13:21,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:21,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:21,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2021-11-23 14:13:21,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:21,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:13:21,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:21,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 41 [2021-11-23 14:13:22,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:22,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:22,082 INFO L354 Elim1Store]: treesize reduction 68, result has 32.7 percent of original size [2021-11-23 14:13:22,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 56 treesize of output 65 [2021-11-23 14:13:22,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:22,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:13:22,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:22,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 112 [2021-11-23 14:13:22,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:22,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:22,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 41 [2021-11-23 14:13:22,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:22,851 INFO L354 Elim1Store]: treesize reduction 257, result has 21.2 percent of original size [2021-11-23 14:13:22,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 178 treesize of output 156 [2021-11-23 14:13:24,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:24,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:24,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:24,384 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 14:13:24,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 117 [2021-11-23 14:13:25,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:25,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:25,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:13:25,265 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 14:13:25,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 83 [2021-11-23 14:13:59,207 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 14:13:59,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 51 [2021-11-23 14:13:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:13:59,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:14:00,246 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_68| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_68| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_68| 8)))) (store .cse0 .cse1 (mod (select .cse0 .cse1) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) |c_ULTIMATE.start_main_~a~0#1.offset|) 0))) is different from false [2021-11-23 14:14:31,889 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_71| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_71| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (let ((.cse0 (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_71| 8)))) (store .cse1 .cse2 (+ (select .cse1 .cse2) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (mod (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse0) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0))) is different from false [2021-11-23 14:15:07,902 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-23 14:15:07,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:15:07,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048307000] [2021-11-23 14:15:07,902 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:15:07,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904314318] [2021-11-23 14:15:07,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904314318] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:15:07,902 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:15:07,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 39 [2021-11-23 14:15:07,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858981711] [2021-11-23 14:15:07,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:15:07,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-23 14:15:07,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:15:07,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-23 14:15:07,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1113, Unknown=17, NotChecked=142, Total=1482 [2021-11-23 14:15:07,907 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:15:35,497 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~i~0#1| 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8))) 3) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (forall ((|v_ULTIMATE.start_main_~i~0#1_71| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_71| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (let ((.cse1 (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_71| 8)))) (store .cse2 .cse3 (+ (select .cse2 .cse3) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (mod (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse1) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0))) (= 2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) is different from false [2021-11-23 14:16:02,527 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (let ((.cse0 (select .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (or (= .cse0 1) (= 3 .cse0))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (= (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) 3) (forall ((|v_ULTIMATE.start_main_~i~0#1_71| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_71| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (let ((.cse2 (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse4 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_71| 8)))) (store .cse3 .cse4 (+ (select .cse3 .cse4) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (mod (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0))) (= 2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (exists ((|ULTIMATE.start_main_~i~0#1| Int)) (let ((.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse6 (= (* 8 |ULTIMATE.start_main_~i~0#1|) 8))) (and (<= 1 |ULTIMATE.start_main_~i~0#1|) (or (= (select .cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1) .cse6) (or (= (select .cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8))) 3) (not .cse6))))))) is different from false [2021-11-23 14:16:03,965 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (let ((.cse0 (select .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (or (= .cse0 1) (= 3 .cse0))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~i~0#1| 0) (= (select .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8))) 0) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (= 2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_68| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_68| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_68| 8)))) (store .cse2 .cse3 (mod (select .cse2 .cse3) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) |c_ULTIMATE.start_main_~a~0#1.offset|) 0))))) is different from false [2021-11-23 14:16:32,962 WARN L227 SmtUtils]: Spent 10.38s on a formula simplification. DAG size of input: 62 DAG size of output: 62 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:16:34,999 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= (select (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8)))) (store .cse0 .cse1 (mod (select .cse0 .cse1) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (exists ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~#sum~0#1.base| Int)) (and (<= 1 |ULTIMATE.start_main_~i~0#1|) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|) (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse6 (= (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|) 0))) (or (and (let ((.cse2 (select .cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (or (= .cse2 1) (= 3 .cse2))) (exists ((|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_arrayElimCell_35 Int)) (let ((.cse5 (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse4 (mod v_arrayElimCell_35 (+ .cse5 1)))) (and (= .cse4 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8))) .cse5 1)) (not (= .cse4 0)) (= 2 .cse5) (< v_arrayElimCell_35 0))))) .cse6) (and .cse6 (exists ((|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_arrayElimCell_35 Int)) (let ((.cse7 (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse8 (mod v_arrayElimCell_35 (+ .cse7 1))) (.cse9 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= 2 .cse7) (or (= .cse8 0) (<= 0 v_arrayElimCell_35)) (= .cse8 (select .cse9 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8)))) (let ((.cse12 (= (* 8 |ULTIMATE.start_main_~i~0#1|) 8))) (let ((.cse10 (not .cse12)) (.cse11 (select .cse9 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (or (and (or .cse10 (= v_arrayElimCell_35 1)) (= .cse11 1)) (and (or (= 3 v_arrayElimCell_35) .cse10) (or (= 3 .cse11) .cse12))))))))))))))) (forall ((|v_ULTIMATE.start_main_~i~0#1_68| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_68| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (let ((.cse13 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse14 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_68| 8)))) (store .cse13 .cse14 (mod (select .cse13 .cse14) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)))) is different from false [2021-11-23 14:16:35,951 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_68| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_68| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_68| 8)))) (store .cse0 .cse1 (mod (select .cse0 .cse1) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)))) is different from false [2021-11-23 14:16:37,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:16:37,633 INFO L93 Difference]: Finished difference Result 88 states and 101 transitions. [2021-11-23 14:16:37,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-23 14:16:37,634 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-23 14:16:37,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:16:37,636 INFO L225 Difference]: With dead ends: 88 [2021-11-23 14:16:37,636 INFO L226 Difference]: Without dead ends: 86 [2021-11-23 14:16:37,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 7 IntricatePredicates, 2 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 155.5s TimeCoverageRelationStatistics Valid=304, Invalid=1851, Unknown=35, NotChecked=672, Total=2862 [2021-11-23 14:16:37,639 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 40 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 436 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 14:16:37,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 193 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 194 Invalid, 0 Unknown, 436 Unchecked, 0.4s Time] [2021-11-23 14:16:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-23 14:16:37,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2021-11-23 14:16:37,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 79 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:16:37,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2021-11-23 14:16:37,652 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 32 [2021-11-23 14:16:37,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:16:37,652 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2021-11-23 14:16:37,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:16:37,653 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2021-11-23 14:16:37,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 14:16:37,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:16:37,655 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:16:37,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 14:16:37,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 14:16:37,871 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:16:37,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:16:37,872 INFO L85 PathProgramCache]: Analyzing trace with hash 332676504, now seen corresponding path program 5 times [2021-11-23 14:16:37,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:16:37,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015459556] [2021-11-23 14:16:37,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:16:37,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:16:37,909 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:16:37,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48500268] [2021-11-23 14:16:37,911 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-23 14:16:37,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:16:37,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:16:37,913 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:16:37,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 14:16:38,043 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-11-23 14:16:38,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:16:38,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 14:16:38,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:16:38,198 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 14:16:38,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:16:38,299 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 14:16:38,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:16:38,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015459556] [2021-11-23 14:16:38,299 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:16:38,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48500268] [2021-11-23 14:16:38,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48500268] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:16:38,299 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:16:38,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-11-23 14:16:38,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720219945] [2021-11-23 14:16:38,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:16:38,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 14:16:38,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:16:38,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 14:16:38,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-23 14:16:38,302 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:16:38,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:16:38,570 INFO L93 Difference]: Finished difference Result 167 states and 190 transitions. [2021-11-23 14:16:38,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 14:16:38,570 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-23 14:16:38,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:16:38,571 INFO L225 Difference]: With dead ends: 167 [2021-11-23 14:16:38,572 INFO L226 Difference]: Without dead ends: 132 [2021-11-23 14:16:38,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-23 14:16:38,577 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 112 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 14:16:38,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 63 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 14:16:38,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-23 14:16:38,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 93. [2021-11-23 14:16:38,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.141304347826087) internal successors, (105), 92 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:16:38,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2021-11-23 14:16:38,599 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 34 [2021-11-23 14:16:38,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:16:38,599 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2021-11-23 14:16:38,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:16:38,600 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2021-11-23 14:16:38,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 14:16:38,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:16:38,601 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:16:38,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 14:16:38,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:16:38,828 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:16:38,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:16:38,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1737020496, now seen corresponding path program 1 times [2021-11-23 14:16:38,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:16:38,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046355588] [2021-11-23 14:16:38,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:16:38,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:16:38,860 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:16:38,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819657394] [2021-11-23 14:16:38,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:16:38,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:16:38,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:16:38,862 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:16:38,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 14:16:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:16:38,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-23 14:16:38,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:16:39,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-23 14:16:39,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 14:16:39,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-23 14:16:39,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:16:39,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-23 14:16:39,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:16:39,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:16:39,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2021-11-23 14:16:39,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:16:39,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2021-11-23 14:16:39,433 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:16:39,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:16:39,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 39 [2021-11-23 14:16:39,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:16:39,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 35 [2021-11-23 14:16:39,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:16:39,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:16:39,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 108 [2021-11-23 14:16:39,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:16:39,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 37 [2021-11-23 14:16:39,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:16:39,829 INFO L354 Elim1Store]: treesize reduction 59, result has 10.6 percent of original size [2021-11-23 14:16:39,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 55 treesize of output 41 [2021-11-23 14:16:40,199 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:16:40,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:17:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:17:26,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:17:26,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046355588] [2021-11-23 14:17:26,870 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:17:26,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819657394] [2021-11-23 14:17:26,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819657394] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:17:26,870 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:17:26,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 43 [2021-11-23 14:17:26,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719293855] [2021-11-23 14:17:26,871 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:17:26,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-23 14:17:26,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:17:26,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-23 14:17:26,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=1468, Unknown=1, NotChecked=0, Total=1806 [2021-11-23 14:17:26,873 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand has 43 states, 43 states have (on average 1.5813953488372092) internal successors, (68), 43 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:17:35,780 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse84 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (let ((.cse23 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse24 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse26 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse84))) (let ((.cse27 (select .cse24 .cse26)) (.cse22 (select .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse56 (+ .cse27 .cse22))) (let ((.cse64 (select .cse24 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse59 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse56)))) (let ((.cse13 (store .cse24 .cse26 1)) (.cse41 (select .cse59 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse28 (+ .cse22 1)) (.cse33 (+ .cse64 .cse22)) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse14 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse84 8))) (and (let ((.cse12 (store .cse13 .cse14 1))) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse12))) (let ((.cse11 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse7 (select .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse8 (select .cse12 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse9 (select (select (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (let ((.cse2 (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse8 .cse9))))) (let ((.cse3 (let ((.cse5 (let ((.cse6 (select .cse2 |c_ULTIMATE.start_main_~a~0#1.base|))) (store .cse6 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse6 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse7 .cse8 .cse9))))) (store .cse5 .cse1 (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~a~0#1.base| .cse5) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse5 .cse1)))))) (let ((.cse4 (mod (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~a~0#1.base| .cse3) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (= (let ((.cse0 (store .cse3 |c_ULTIMATE.start_main_~a~0#1.offset| .cse4))) (mod (select .cse0 .cse1) (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~a~0#1.base| .cse0) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0) (not (= .cse4 0))))))))))) (let ((.cse21 (select .cse24 .cse14))) (let ((.cse16 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse21 .cse22))))) (let ((.cse17 (let ((.cse19 (let ((.cse20 (select .cse16 |c_ULTIMATE.start_main_~a~0#1.base|))) (store .cse20 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse20 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse21 .cse22))))) (store .cse19 .cse1 (+ (select .cse19 .cse1) (select (select (store .cse16 |c_ULTIMATE.start_main_~a~0#1.base| .cse19) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse18 (mod (select .cse17 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store .cse16 |c_ULTIMATE.start_main_~a~0#1.base| .cse17) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (= (let ((.cse15 (store .cse17 |c_ULTIMATE.start_main_~a~0#1.offset| .cse18))) (mod (select .cse15 .cse1) (+ (select (select (store .cse16 |c_ULTIMATE.start_main_~a~0#1.base| .cse15) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0) (not (= .cse18 0))))))) (let ((.cse25 (store .cse24 .cse26 (mod .cse27 .cse28)))) (or (not (= (select .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (= (select .cse25 .cse1) 0))) (let ((.cse31 (let ((.cse32 (store .cse24 |c_ULTIMATE.start_main_~a~0#1.offset| .cse33))) (store .cse32 .cse1 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse32) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse32 .cse1)))))) (let ((.cse29 (mod (select .cse31 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse31) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (not (= .cse29 0)) (= (let ((.cse30 (store .cse31 |c_ULTIMATE.start_main_~a~0#1.offset| .cse29))) (mod (select .cse30 .cse1) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse30) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0)))) (let ((.cse40 (select .cse41 .cse14))) (let ((.cse36 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse27 .cse22 .cse40))))) (let ((.cse37 (let ((.cse38 (let ((.cse39 (select .cse36 |c_ULTIMATE.start_main_~a~0#1.base|))) (store .cse39 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse27 (select .cse39 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse22 .cse40))))) (store .cse38 .cse1 (+ (select .cse38 .cse1) (select (select (store .cse36 |c_ULTIMATE.start_main_~a~0#1.base| .cse38) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse34 (mod (select .cse37 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store .cse36 |c_ULTIMATE.start_main_~a~0#1.base| .cse37) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (not (= .cse34 0)) (= (let ((.cse35 (store .cse37 |c_ULTIMATE.start_main_~a~0#1.offset| .cse34))) (mod (select .cse35 .cse1) (+ (select (select (store .cse36 |c_ULTIMATE.start_main_~a~0#1.base| .cse35) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0)))))) (let ((.cse51 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse13))) (let ((.cse52 (select .cse51 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse49 (select .cse13 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse50 (select .cse52 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse48 (select (select (store .cse51 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse52 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse49 .cse50))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (let ((.cse44 (store .cse51 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse52 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse48 .cse49 .cse50))))) (let ((.cse45 (let ((.cse46 (let ((.cse47 (select .cse44 |c_ULTIMATE.start_main_~a~0#1.base|))) (store .cse47 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse47 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse48 .cse49 .cse50))))) (store .cse46 .cse1 (+ (select (select (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| .cse46) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse46 .cse1)))))) (let ((.cse42 (mod (select .cse45 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| .cse45) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (not (= .cse42 0)) (= (let ((.cse43 (store .cse45 |c_ULTIMATE.start_main_~a~0#1.offset| .cse42))) (mod (select .cse43 .cse1) (+ (select (select (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| .cse43) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0))))))))) (let ((.cse54 (store .cse24 .cse26 .cse56))) (let ((.cse55 (mod (select .cse54 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse54) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (= 0 (let ((.cse53 (store .cse54 |c_ULTIMATE.start_main_~a~0#1.offset| .cse55))) (mod (select .cse53 .cse1) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse53) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (not (= .cse55 0))))) (let ((.cse60 (let ((.cse61 (store .cse41 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse41 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse27 .cse22)))) (store .cse61 .cse1 (+ (select .cse61 .cse1) (select (select (store .cse59 |c_ULTIMATE.start_main_~a~0#1.base| .cse61) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse57 (mod (select .cse60 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store .cse59 |c_ULTIMATE.start_main_~a~0#1.base| .cse60) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (not (= .cse57 0)) (= (let ((.cse58 (store .cse60 |c_ULTIMATE.start_main_~a~0#1.offset| .cse57))) (mod (select .cse58 .cse1) (+ (select (select (store .cse59 |c_ULTIMATE.start_main_~a~0#1.base| .cse58) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0)))) (let ((.cse63 (mod .cse64 .cse28))) (or (= (let ((.cse62 (store .cse24 |c_ULTIMATE.start_main_~a~0#1.offset| .cse63))) (mod (select .cse62 .cse1) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse62) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0) (not (= 0 .cse63)))) (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (let ((.cse71 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse33)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (let ((.cse67 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse64 .cse71 .cse22))))) (let ((.cse68 (let ((.cse69 (let ((.cse70 (select .cse67 |c_ULTIMATE.start_main_~a~0#1.base|))) (store .cse70 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse64 .cse71 .cse22 (select .cse70 |c_ULTIMATE.start_main_~a~0#1.offset|)))))) (store .cse69 .cse1 (+ (select (select (store .cse67 |c_ULTIMATE.start_main_~a~0#1.base| .cse69) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse69 .cse1)))))) (let ((.cse65 (mod (select .cse68 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store .cse67 |c_ULTIMATE.start_main_~a~0#1.base| .cse68) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (not (= .cse65 0)) (= (let ((.cse66 (store .cse68 |c_ULTIMATE.start_main_~a~0#1.offset| .cse65))) (mod (select .cse66 .cse1) (+ (select (select (store .cse67 |c_ULTIMATE.start_main_~a~0#1.base| .cse66) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0)))))) (or (not (= .cse64 0)) (= (select .cse24 .cse1) 0)) (let ((.cse83 (store .cse24 .cse14 1))) (let ((.cse81 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse83))) (let ((.cse82 (select .cse81 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse79 (select .cse83 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse80 (select .cse82 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse78 (select (select (store .cse81 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse82 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse79 .cse80))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (let ((.cse74 (store .cse81 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse82 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse78 .cse79 .cse80))))) (let ((.cse75 (let ((.cse76 (let ((.cse77 (select .cse74 |c_ULTIMATE.start_main_~a~0#1.base|))) (store .cse77 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse78 (select .cse77 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse79 .cse80))))) (store .cse76 .cse1 (+ (select (select (store .cse74 |c_ULTIMATE.start_main_~a~0#1.base| .cse76) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse76 .cse1)))))) (let ((.cse72 (mod (select .cse75 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store .cse74 |c_ULTIMATE.start_main_~a~0#1.base| .cse75) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (not (= .cse72 0)) (= (let ((.cse73 (store .cse75 |c_ULTIMATE.start_main_~a~0#1.offset| .cse72))) (mod (select .cse73 .cse1) (+ (select (select (store .cse74 |c_ULTIMATE.start_main_~a~0#1.base| .cse73) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0))))))))))))))))) is different from false [2021-11-23 14:17:37,792 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse84 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (let ((.cse23 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse24 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse26 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse84))) (let ((.cse27 (select .cse24 .cse26)) (.cse22 (select .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse56 (+ .cse27 .cse22))) (let ((.cse64 (select .cse24 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse59 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse56)))) (let ((.cse13 (store .cse24 .cse26 1)) (.cse41 (select .cse59 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse28 (+ .cse22 1)) (.cse33 (+ .cse64 .cse22)) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse14 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse84 8))) (and (let ((.cse12 (store .cse13 .cse14 1))) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse12))) (let ((.cse11 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse7 (select .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse8 (select .cse12 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse9 (select (select (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (let ((.cse2 (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse8 .cse9))))) (let ((.cse3 (let ((.cse5 (let ((.cse6 (select .cse2 |c_ULTIMATE.start_main_~a~0#1.base|))) (store .cse6 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse6 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse7 .cse8 .cse9))))) (store .cse5 .cse1 (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~a~0#1.base| .cse5) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse5 .cse1)))))) (let ((.cse4 (mod (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~a~0#1.base| .cse3) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (= (let ((.cse0 (store .cse3 |c_ULTIMATE.start_main_~a~0#1.offset| .cse4))) (mod (select .cse0 .cse1) (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~a~0#1.base| .cse0) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0) (not (= .cse4 0))))))))))) (let ((.cse21 (select .cse24 .cse14))) (let ((.cse16 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse21 .cse22))))) (let ((.cse17 (let ((.cse19 (let ((.cse20 (select .cse16 |c_ULTIMATE.start_main_~a~0#1.base|))) (store .cse20 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse20 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse21 .cse22))))) (store .cse19 .cse1 (+ (select .cse19 .cse1) (select (select (store .cse16 |c_ULTIMATE.start_main_~a~0#1.base| .cse19) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse18 (mod (select .cse17 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store .cse16 |c_ULTIMATE.start_main_~a~0#1.base| .cse17) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (= (let ((.cse15 (store .cse17 |c_ULTIMATE.start_main_~a~0#1.offset| .cse18))) (mod (select .cse15 .cse1) (+ (select (select (store .cse16 |c_ULTIMATE.start_main_~a~0#1.base| .cse15) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0) (not (= .cse18 0))))))) (let ((.cse25 (store .cse24 .cse26 (mod .cse27 .cse28)))) (or (not (= (select .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (= (select .cse25 .cse1) 0))) (let ((.cse31 (let ((.cse32 (store .cse24 |c_ULTIMATE.start_main_~a~0#1.offset| .cse33))) (store .cse32 .cse1 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse32) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse32 .cse1)))))) (let ((.cse29 (mod (select .cse31 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse31) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (not (= .cse29 0)) (= (let ((.cse30 (store .cse31 |c_ULTIMATE.start_main_~a~0#1.offset| .cse29))) (mod (select .cse30 .cse1) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse30) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0)))) (let ((.cse40 (select .cse41 .cse14))) (let ((.cse36 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse27 .cse22 .cse40))))) (let ((.cse37 (let ((.cse38 (let ((.cse39 (select .cse36 |c_ULTIMATE.start_main_~a~0#1.base|))) (store .cse39 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse27 (select .cse39 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse22 .cse40))))) (store .cse38 .cse1 (+ (select .cse38 .cse1) (select (select (store .cse36 |c_ULTIMATE.start_main_~a~0#1.base| .cse38) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse34 (mod (select .cse37 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store .cse36 |c_ULTIMATE.start_main_~a~0#1.base| .cse37) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (not (= .cse34 0)) (= (let ((.cse35 (store .cse37 |c_ULTIMATE.start_main_~a~0#1.offset| .cse34))) (mod (select .cse35 .cse1) (+ (select (select (store .cse36 |c_ULTIMATE.start_main_~a~0#1.base| .cse35) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0)))))) (let ((.cse51 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse13))) (let ((.cse52 (select .cse51 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse49 (select .cse13 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse50 (select .cse52 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse48 (select (select (store .cse51 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse52 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse49 .cse50))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (let ((.cse44 (store .cse51 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse52 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse48 .cse49 .cse50))))) (let ((.cse45 (let ((.cse46 (let ((.cse47 (select .cse44 |c_ULTIMATE.start_main_~a~0#1.base|))) (store .cse47 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse47 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse48 .cse49 .cse50))))) (store .cse46 .cse1 (+ (select (select (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| .cse46) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse46 .cse1)))))) (let ((.cse42 (mod (select .cse45 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| .cse45) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (not (= .cse42 0)) (= (let ((.cse43 (store .cse45 |c_ULTIMATE.start_main_~a~0#1.offset| .cse42))) (mod (select .cse43 .cse1) (+ (select (select (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| .cse43) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0))))))))) (let ((.cse54 (store .cse24 .cse26 .cse56))) (let ((.cse55 (mod (select .cse54 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse54) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (= 0 (let ((.cse53 (store .cse54 |c_ULTIMATE.start_main_~a~0#1.offset| .cse55))) (mod (select .cse53 .cse1) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse53) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (not (= .cse55 0))))) (let ((.cse60 (let ((.cse61 (store .cse41 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse41 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse27 .cse22)))) (store .cse61 .cse1 (+ (select .cse61 .cse1) (select (select (store .cse59 |c_ULTIMATE.start_main_~a~0#1.base| .cse61) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse57 (mod (select .cse60 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store .cse59 |c_ULTIMATE.start_main_~a~0#1.base| .cse60) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (not (= .cse57 0)) (= (let ((.cse58 (store .cse60 |c_ULTIMATE.start_main_~a~0#1.offset| .cse57))) (mod (select .cse58 .cse1) (+ (select (select (store .cse59 |c_ULTIMATE.start_main_~a~0#1.base| .cse58) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0)))) (let ((.cse63 (mod .cse64 .cse28))) (or (= (let ((.cse62 (store .cse24 |c_ULTIMATE.start_main_~a~0#1.offset| .cse63))) (mod (select .cse62 .cse1) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse62) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0) (not (= 0 .cse63)))) (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (let ((.cse71 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse33)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (let ((.cse67 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse64 .cse71 .cse22))))) (let ((.cse68 (let ((.cse69 (let ((.cse70 (select .cse67 |c_ULTIMATE.start_main_~a~0#1.base|))) (store .cse70 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse64 .cse71 .cse22 (select .cse70 |c_ULTIMATE.start_main_~a~0#1.offset|)))))) (store .cse69 .cse1 (+ (select (select (store .cse67 |c_ULTIMATE.start_main_~a~0#1.base| .cse69) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse69 .cse1)))))) (let ((.cse65 (mod (select .cse68 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store .cse67 |c_ULTIMATE.start_main_~a~0#1.base| .cse68) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (not (= .cse65 0)) (= (let ((.cse66 (store .cse68 |c_ULTIMATE.start_main_~a~0#1.offset| .cse65))) (mod (select .cse66 .cse1) (+ (select (select (store .cse67 |c_ULTIMATE.start_main_~a~0#1.base| .cse66) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0)))))) (or (not (= .cse64 0)) (= (select .cse24 .cse1) 0)) (let ((.cse83 (store .cse24 .cse14 1))) (let ((.cse81 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse83))) (let ((.cse82 (select .cse81 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse79 (select .cse83 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse80 (select .cse82 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse78 (select (select (store .cse81 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse82 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse79 .cse80))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (let ((.cse74 (store .cse81 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse82 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse78 .cse79 .cse80))))) (let ((.cse75 (let ((.cse76 (let ((.cse77 (select .cse74 |c_ULTIMATE.start_main_~a~0#1.base|))) (store .cse77 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse78 (select .cse77 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse79 .cse80))))) (store .cse76 .cse1 (+ (select (select (store .cse74 |c_ULTIMATE.start_main_~a~0#1.base| .cse76) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse76 .cse1)))))) (let ((.cse72 (mod (select .cse75 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store .cse74 |c_ULTIMATE.start_main_~a~0#1.base| .cse75) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (not (= .cse72 0)) (= (let ((.cse73 (store .cse75 |c_ULTIMATE.start_main_~a~0#1.offset| .cse72))) (mod (select .cse73 .cse1) (+ (select (select (store .cse74 |c_ULTIMATE.start_main_~a~0#1.base| .cse73) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0))))))))))))))))) is different from true [2021-11-23 14:18:17,055 WARN L227 SmtUtils]: Spent 10.27s on a formula simplification. DAG size of input: 228 DAG size of output: 84 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:18:24,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 14:18:30,608 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse29 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (let ((.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse9 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse29))) (let ((.cse10 (select .cse8 .cse9)) (.cse11 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse4 (store .cse8 .cse9 (+ .cse10 .cse11)))) (let ((.cse6 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse4) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse29 8)) (.cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (and (let ((.cse3 (store .cse4 .cse5 (+ .cse6 (select .cse4 .cse5))))) (let ((.cse0 (mod (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse3) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (not (= .cse0 0)) (= (let ((.cse1 (store .cse3 |c_ULTIMATE.start_main_~a~0#1.offset| .cse0))) (mod (select .cse1 .cse2) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse1) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0)))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (let ((.cse7 (store .cse8 .cse9 (mod .cse10 (+ .cse11 1))))) (or (not (= (select .cse7 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (= (select .cse7 .cse2) 0))) (let ((.cse23 (store .cse8 .cse9 1))) (let ((.cse21 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse23))) (let ((.cse22 (select .cse21 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse19 (select .cse23 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse20 (select .cse22 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse18 (select (select (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse19 .cse20))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (let ((.cse14 (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse18 .cse19 .cse20))))) (let ((.cse15 (let ((.cse16 (let ((.cse17 (select .cse14 |c_ULTIMATE.start_main_~a~0#1.base|))) (store .cse17 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse17 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse18 .cse19 .cse20))))) (store .cse16 .cse2 (+ (select (select (store .cse14 |c_ULTIMATE.start_main_~a~0#1.base| .cse16) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse16 .cse2)))))) (let ((.cse12 (mod (select .cse15 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store .cse14 |c_ULTIMATE.start_main_~a~0#1.base| .cse15) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (not (= .cse12 0)) (= (let ((.cse13 (store .cse15 |c_ULTIMATE.start_main_~a~0#1.offset| .cse12))) (mod (select .cse13 .cse2) (+ (select (select (store .cse14 |c_ULTIMATE.start_main_~a~0#1.base| .cse13) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0)))))))))) (let ((.cse25 (mod (select .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ .cse6 1)))) (or (= 0 (let ((.cse24 (store .cse4 |c_ULTIMATE.start_main_~a~0#1.offset| .cse25))) (mod (select .cse24 .cse2) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse24) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (not (= .cse25 0)))) (let ((.cse27 (store .cse8 .cse5 (+ (select .cse8 .cse5) .cse11)))) (let ((.cse28 (mod (select .cse27 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse27) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1)))) (or (= (let ((.cse26 (store .cse27 |c_ULTIMATE.start_main_~a~0#1.offset| .cse28))) (mod (select .cse26 .cse2) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse26) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0) (not (= .cse28 0))))) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= 3 (select .cse8 .cse2)) (= (select .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|) 3) (= 2 .cse11))))))) is different from true [2021-11-23 14:19:12,915 WARN L227 SmtUtils]: Spent 11.75s on a formula simplification that was a NOOP. DAG size: 110 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:19:17,290 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 14:19:36,323 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 14:20:12,714 WARN L227 SmtUtils]: Spent 18.31s on a formula simplification. DAG size of input: 222 DAG size of output: 142 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:20:57,901 WARN L227 SmtUtils]: Spent 19.64s on a formula simplification that was a NOOP. DAG size: 110 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:20:59,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 14:21:13,773 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 14:21:17,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:21:17,358 INFO L93 Difference]: Finished difference Result 132 states and 148 transitions. [2021-11-23 14:21:17,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-23 14:21:17,359 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.5813953488372092) internal successors, (68), 43 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-23 14:21:17,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:21:17,360 INFO L225 Difference]: With dead ends: 132 [2021-11-23 14:21:17,360 INFO L226 Difference]: Without dead ends: 87 [2021-11-23 14:21:17,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1051 ImplicationChecksByTransitivity, 223.4s TimeCoverageRelationStatistics Valid=952, Invalid=3876, Unknown=10, NotChecked=274, Total=5112 [2021-11-23 14:21:17,362 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 107 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 337 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 43.7s IncrementalHoareTripleChecker+Time [2021-11-23 14:21:17,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 131 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 572 Invalid, 2 Unknown, 39 Unchecked, 43.7s Time] [2021-11-23 14:21:17,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-23 14:21:17,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 73. [2021-11-23 14:21:17,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 72 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:21:17,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2021-11-23 14:21:17,370 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 36 [2021-11-23 14:21:17,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:21:17,371 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2021-11-23 14:21:17,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.5813953488372092) internal successors, (68), 43 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:21:17,371 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2021-11-23 14:21:17,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 14:21:17,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:21:17,372 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:21:17,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 14:21:17,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:21:17,588 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:21:17,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:21:17,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1245131882, now seen corresponding path program 6 times [2021-11-23 14:21:17,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:21:17,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767474874] [2021-11-23 14:21:17,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:21:17,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:21:17,621 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:21:17,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138703621] [2021-11-23 14:21:17,631 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-23 14:21:17,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:21:17,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:21:17,644 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:21:17,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 14:21:17,713 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-11-23 14:21:17,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:21:17,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 14:21:17,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:21:17,856 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-23 14:21:17,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:21:17,950 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-23 14:21:17,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:21:17,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767474874] [2021-11-23 14:21:17,950 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:21:17,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138703621] [2021-11-23 14:21:17,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138703621] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:21:17,950 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:21:17,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-11-23 14:21:17,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042688681] [2021-11-23 14:21:17,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:21:17,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 14:21:17,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:21:17,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 14:21:17,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-23 14:21:17,952 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:21:18,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:21:18,225 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2021-11-23 14:21:18,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 14:21:18,226 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-23 14:21:18,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:21:18,226 INFO L225 Difference]: With dead ends: 95 [2021-11-23 14:21:18,226 INFO L226 Difference]: Without dead ends: 73 [2021-11-23 14:21:18,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-11-23 14:21:18,227 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 117 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 14:21:18,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 60 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 14:21:18,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-23 14:21:18,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 43. [2021-11-23 14:21:18,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:21:18,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-11-23 14:21:18,235 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 36 [2021-11-23 14:21:18,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:21:18,235 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-11-23 14:21:18,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:21:18,235 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-11-23 14:21:18,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-23 14:21:18,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:21:18,236 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:21:18,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-23 14:21:18,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-23 14:21:18,448 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:21:18,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:21:18,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1201221586, now seen corresponding path program 7 times [2021-11-23 14:21:18,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:21:18,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068145131] [2021-11-23 14:21:18,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:21:18,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:21:18,462 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:21:18,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787880409] [2021-11-23 14:21:18,463 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 14:21:18,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:21:18,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:21:18,464 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:21:18,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 14:21:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:21:18,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-23 14:21:18,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:21:18,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-23 14:21:18,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 14:21:18,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-23 14:21:18,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:18,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-23 14:21:18,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:18,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:18,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:18,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-23 14:21:18,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:18,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:18,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:18,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:18,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2021-11-23 14:21:19,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:19,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:19,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:19,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:19,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:19,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:19,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 49 [2021-11-23 14:21:19,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:19,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:19,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:19,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 51 [2021-11-23 14:21:19,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:19,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:19,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:19,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:19,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 56 [2021-11-23 14:21:19,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:19,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:19,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:19,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:19,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:19,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:19,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 60 [2021-11-23 14:21:19,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:19,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:19,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:19,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 58 [2021-11-23 14:21:19,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:19,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:20,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:20,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:20,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 428 treesize of output 241 [2021-11-23 14:21:20,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:20,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:20,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:20,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 176 [2021-11-23 14:21:20,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:20,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:20,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:20,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 91 [2021-11-23 14:21:20,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:20,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:20,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:20,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:20,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:20,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:20,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 125 [2021-11-23 14:21:20,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:20,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:20,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:20,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 80 [2021-11-23 14:21:20,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:20,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:20,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:20,467 INFO L354 Elim1Store]: treesize reduction 73, result has 8.8 percent of original size [2021-11-23 14:21:20,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 72 treesize of output 57 [2021-11-23 14:21:20,964 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:21:20,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:22:05,334 WARN L227 SmtUtils]: Spent 6.89s on a formula simplification that was a NOOP. DAG size: 97 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:23:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:23:37,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:23:37,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068145131] [2021-11-23 14:23:37,863 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:23:37,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787880409] [2021-11-23 14:23:37,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787880409] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:23:37,863 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:23:37,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 53 [2021-11-23 14:23:37,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102877545] [2021-11-23 14:23:37,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:23:37,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-23 14:23:37,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:23:37,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-23 14:23:37,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=2389, Unknown=10, NotChecked=0, Total=2756 [2021-11-23 14:23:37,867 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 53 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 53 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:24:05,409 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse7 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (let ((.cse1 (let ((.cse8 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse7))) (store .cse4 .cse8 (+ (select .cse4 .cse8) .cse5))))) (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse1) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse7 8))) (and (= (let ((.cse0 (store .cse1 .cse2 (+ .cse3 (select .cse1 .cse2))))) (mod (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse0) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0) (= 0 (mod (select .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ .cse5 1))) (= (mod (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ .cse3 1)) 0) (= (let ((.cse6 (store .cse4 .cse2 (+ (select .cse4 .cse2) .cse5)))) (mod (select .cse6 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse6) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) 0))))) is different from false [2021-11-23 14:24:23,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 14:24:51,705 WARN L227 SmtUtils]: Spent 9.76s on a formula simplification. DAG size of input: 111 DAG size of output: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:25:01,670 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 14:25:37,805 WARN L227 SmtUtils]: Spent 12.73s on a formula simplification. DAG size of input: 208 DAG size of output: 81 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:25:45,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:25:45,721 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2021-11-23 14:25:45,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-23 14:25:45,722 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 53 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-23 14:25:45,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:25:45,723 INFO L225 Difference]: With dead ends: 87 [2021-11-23 14:25:45,724 INFO L226 Difference]: Without dead ends: 85 [2021-11-23 14:25:45,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 224.1s TimeCoverageRelationStatistics Valid=530, Invalid=3750, Unknown=14, NotChecked=128, Total=4422 [2021-11-23 14:25:45,726 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 43 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 214 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2021-11-23 14:25:45,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 206 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 923 Invalid, 1 Unknown, 101 Unchecked, 21.4s Time] [2021-11-23 14:25:45,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-23 14:25:45,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 78. [2021-11-23 14:25:45,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.155844155844156) internal successors, (89), 77 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:25:45,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2021-11-23 14:25:45,736 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 40 [2021-11-23 14:25:45,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:25:45,736 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2021-11-23 14:25:45,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 53 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:25:45,737 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2021-11-23 14:25:45,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 14:25:45,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:25:45,738 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:25:45,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 14:25:45,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 14:25:45,952 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:25:45,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:25:45,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1012369648, now seen corresponding path program 8 times [2021-11-23 14:25:45,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:25:45,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199206004] [2021-11-23 14:25:45,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:25:45,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:25:45,999 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:25:45,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [321501134] [2021-11-23 14:25:46,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 14:25:46,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:25:46,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:25:46,015 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:25:46,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 14:25:46,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 14:25:46,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:25:46,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 14:25:46,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:25:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 14:25:46,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:25:46,355 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 14:25:46,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:25:46,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199206004] [2021-11-23 14:25:46,355 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:25:46,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321501134] [2021-11-23 14:25:46,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321501134] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:25:46,356 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:25:46,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-11-23 14:25:46,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409367348] [2021-11-23 14:25:46,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:25:46,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 14:25:46,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:25:46,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 14:25:46,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-11-23 14:25:46,357 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:25:46,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:25:46,683 INFO L93 Difference]: Finished difference Result 178 states and 197 transitions. [2021-11-23 14:25:46,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 14:25:46,684 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-23 14:25:46,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:25:46,685 INFO L225 Difference]: With dead ends: 178 [2021-11-23 14:25:46,685 INFO L226 Difference]: Without dead ends: 133 [2021-11-23 14:25:46,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-11-23 14:25:46,686 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 181 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 14:25:46,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 83 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 14:25:46,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-23 14:25:46,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 97. [2021-11-23 14:25:46,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.1145833333333333) internal successors, (107), 96 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:25:46,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2021-11-23 14:25:46,699 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 42 [2021-11-23 14:25:46,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:25:46,700 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2021-11-23 14:25:46,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:25:46,700 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2021-11-23 14:25:46,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 14:25:46,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:25:46,701 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:25:46,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 14:25:46,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-23 14:25:46,915 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:25:46,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:25:46,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2112995272, now seen corresponding path program 2 times [2021-11-23 14:25:46,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:25:46,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713517515] [2021-11-23 14:25:46,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:25:46,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:25:46,931 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:25:46,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1920629885] [2021-11-23 14:25:46,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 14:25:46,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:25:46,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:25:46,933 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:25:46,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e995bc4-b8d4-48fc-9b49-9c54eaf971e3/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 14:25:46,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 14:25:46,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:25:46,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-23 14:25:46,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:25:47,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 14:25:47,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-23 14:25:47,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-23 14:25:47,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-23 14:25:47,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-23 14:25:47,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:25:47,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2021-11-23 14:25:47,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:25:47,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 49 [2021-11-23 14:25:47,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 49 [2021-11-23 14:25:47,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:25:47,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 53 [2021-11-23 14:25:47,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:25:47,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 58 [2021-11-23 14:25:47,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:47,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 55 [2021-11-23 14:25:48,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:48,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:25:48,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:48,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:48,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 348 treesize of output 224 [2021-11-23 14:25:48,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:48,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:48,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:48,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 50 [2021-11-23 14:25:48,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:48,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:48,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:48,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 63 [2021-11-23 14:25:48,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:48,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:48,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:48,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:48,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:48,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:25:48,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 147 [2021-11-23 14:25:48,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:48,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:48,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:48,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 58 [2021-11-23 14:25:48,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:48,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:48,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:25:48,568 INFO L354 Elim1Store]: treesize reduction 73, result has 8.8 percent of original size [2021-11-23 14:25:48,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 53 [2021-11-23 14:25:49,493 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:25:49,493 INFO L328 TraceCheckSpWp]: Computing backward predicates...