./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC --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 95bf89db758dccfb711b531182e65e2617c0d025 .................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC --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 95bf89db758dccfb711b531182e65e2617c0d025 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:25:10,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:25:10,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:25:10,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:25:10,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:25:10,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:25:10,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:25:10,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:25:10,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:25:10,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:25:10,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:25:10,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:25:10,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:25:10,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:25:10,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:25:10,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:25:10,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:25:10,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:25:10,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:25:10,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:25:10,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:25:10,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:25:10,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:25:10,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:25:10,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:25:10,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:25:10,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:25:10,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:25:10,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:25:10,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:25:10,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:25:10,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:25:10,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:25:10,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:25:10,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:25:10,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:25:10,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:25:10,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:25:10,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:25:10,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:25:10,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:25:10,280 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:25:10,305 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:25:10,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:25:10,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:25:10,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:25:10,307 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:25:10,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:25:10,307 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:25:10,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:25:10,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:25:10,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:25:10,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:25:10,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:25:10,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:25:10,308 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:25:10,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:25:10,309 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:25:10,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:25:10,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:25:10,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:25:10,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:25:10,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:25:10,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:25:10,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:25:10,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:25:10,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:25:10,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:25:10,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:25:10,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:25:10,311 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_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95bf89db758dccfb711b531182e65e2617c0d025 [2021-10-11 00:25:10,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:25:10,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:25:10,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:25:10,604 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:25:10,616 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:25:10,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound2.c [2021-10-11 00:25:10,697 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/data/96ce2fd87/898583e729fa4b078e86e4d0f5629ae4/FLAG57eb8b039 [2021-10-11 00:25:11,109 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:25:11,110 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound2.c [2021-10-11 00:25:11,118 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/data/96ce2fd87/898583e729fa4b078e86e4d0f5629ae4/FLAG57eb8b039 [2021-10-11 00:25:11,489 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/data/96ce2fd87/898583e729fa4b078e86e4d0f5629ae4 [2021-10-11 00:25:11,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:25:11,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:25:11,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:25:11,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:25:11,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:25:11,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:25:11" (1/1) ... [2021-10-11 00:25:11,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48907f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:11, skipping insertion in model container [2021-10-11 00:25:11,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:25:11" (1/1) ... [2021-10-11 00:25:11,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:25:11,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:25:11,685 WARN L226 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_00c05cf9-7cf5-4c80-b47b-fb8125218124/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound2.c[537,550] [2021-10-11 00:25:11,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:25:11,713 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:25:11,732 WARN L226 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_00c05cf9-7cf5-4c80-b47b-fb8125218124/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound2.c[537,550] [2021-10-11 00:25:11,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:25:11,764 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:25:11,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:11 WrapperNode [2021-10-11 00:25:11,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:25:11,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:25:11,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:25:11,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:25:11,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:11" (1/1) ... [2021-10-11 00:25:11,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:11" (1/1) ... [2021-10-11 00:25:11,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:25:11,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:25:11,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:25:11,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:25:11,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:11" (1/1) ... [2021-10-11 00:25:11,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:11" (1/1) ... [2021-10-11 00:25:11,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:11" (1/1) ... [2021-10-11 00:25:11,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:11" (1/1) ... [2021-10-11 00:25:11,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:11" (1/1) ... [2021-10-11 00:25:11,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:11" (1/1) ... [2021-10-11 00:25:11,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:11" (1/1) ... [2021-10-11 00:25:11,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:25:11,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:25:11,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:25:11,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:25:11,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:11" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:25:11,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:25:11,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:25:11,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:25:11,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:25:12,219 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:25:12,220 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-11 00:25:12,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:25:12 BoogieIcfgContainer [2021-10-11 00:25:12,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:25:12,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:25:12,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:25:12,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:25:12,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:25:11" (1/3) ... [2021-10-11 00:25:12,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5462276b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:25:12, skipping insertion in model container [2021-10-11 00:25:12,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:11" (2/3) ... [2021-10-11 00:25:12,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5462276b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:25:12, skipping insertion in model container [2021-10-11 00:25:12,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:25:12" (3/3) ... [2021-10-11 00:25:12,251 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound2.c [2021-10-11 00:25:12,280 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:25:12,283 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 00:25:12,294 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 00:25:12,334 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:25:12,336 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:25:12,336 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:25:12,336 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:25:12,337 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:25:12,337 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:25:12,337 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:25:12,337 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:25:12,353 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2021-10-11 00:25:12,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:25:12,363 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:25:12,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:25:12,366 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:25:12,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:25:12,372 INFO L82 PathProgramCache]: Analyzing trace with hash 822857436, now seen corresponding path program 1 times [2021-10-11 00:25:12,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:25:12,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403009896] [2021-10-11 00:25:12,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:25:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:25:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:12,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403009896] [2021-10-11 00:25:12,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:25:12,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:25:12,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482883951] [2021-10-11 00:25:12,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:25:12,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:25:12,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:25:12,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:25:12,559 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2021-10-11 00:25:12,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:25:12,576 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2021-10-11 00:25:12,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:25:12,578 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2021-10-11 00:25:12,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:25:12,586 INFO L225 Difference]: With dead ends: 53 [2021-10-11 00:25:12,586 INFO L226 Difference]: Without dead ends: 24 [2021-10-11 00:25:12,589 INFO L677 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 [2021-10-11 00:25:12,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-11 00:25:12,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-11 00:25:12,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-11 00:25:12,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-10-11 00:25:12,621 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 17 [2021-10-11 00:25:12,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:25:12,622 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-10-11 00:25:12,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:25:12,622 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-10-11 00:25:12,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:25:12,623 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:25:12,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:25:12,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:25:12,624 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:25:12,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:25:12,625 INFO L82 PathProgramCache]: Analyzing trace with hash 2114165096, now seen corresponding path program 1 times [2021-10-11 00:25:12,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:25:12,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25780190] [2021-10-11 00:25:12,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:25:12,681 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:25:12,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1415364253] [2021-10-11 00:25:12,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:25:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:25:12,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-11 00:25:12,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:25:13,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25780190] [2021-10-11 00:25:13,053 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:25:13,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415364253] [2021-10-11 00:25:13,054 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-10-11 00:25:13,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:25:13,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-11 00:25:13,055 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-10-11 00:25:13,055 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:25:13,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 00:25:13,288 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-10-11 00:25:13,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:25:13 BoogieIcfgContainer [2021-10-11 00:25:13,288 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:25:13,289 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:25:13,289 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:25:13,289 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:25:13,290 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:25:12" (3/4) ... [2021-10-11 00:25:13,299 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 00:25:13,299 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:25:13,300 INFO L168 Benchmark]: Toolchain (without parser) took 1806.29 ms. Allocated memory is still 100.7 MB. Free memory was 64.6 MB in the beginning and 59.5 MB in the end (delta: 5.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:13,301 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory was 80.8 MB in the beginning and 80.8 MB in the end (delta: 69.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:25:13,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.97 ms. Allocated memory is still 100.7 MB. Free memory was 64.4 MB in the beginning and 76.9 MB in the end (delta: -12.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:13,302 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.37 ms. Allocated memory is still 100.7 MB. Free memory was 76.9 MB in the beginning and 75.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:13,303 INFO L168 Benchmark]: Boogie Preprocessor took 24.12 ms. Allocated memory is still 100.7 MB. Free memory was 75.3 MB in the beginning and 74.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:13,304 INFO L168 Benchmark]: RCFGBuilder took 397.76 ms. Allocated memory is still 100.7 MB. Free memory was 74.0 MB in the beginning and 59.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:13,304 INFO L168 Benchmark]: TraceAbstraction took 1058.41 ms. Allocated memory is still 100.7 MB. Free memory was 58.6 MB in the beginning and 60.0 MB in the end (delta: -1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:25:13,305 INFO L168 Benchmark]: Witness Printer took 10.00 ms. Allocated memory is still 100.7 MB. Free memory was 60.0 MB in the beginning and 59.5 MB in the end (delta: 462.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:25:13,308 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory was 80.8 MB in the beginning and 80.8 MB in the end (delta: 69.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 270.97 ms. Allocated memory is still 100.7 MB. Free memory was 64.4 MB in the beginning and 76.9 MB in the end (delta: -12.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.37 ms. Allocated memory is still 100.7 MB. Free memory was 76.9 MB in the beginning and 75.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.12 ms. Allocated memory is still 100.7 MB. Free memory was 75.3 MB in the beginning and 74.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 397.76 ms. Allocated memory is still 100.7 MB. Free memory was 74.0 MB in the beginning and 59.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1058.41 ms. Allocated memory is still 100.7 MB. Free memory was 58.6 MB in the beginning and 60.0 MB in the end (delta: -1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 10.00 ms. Allocated memory is still 100.7 MB. Free memory was 60.0 MB in the beginning and 59.5 MB in the end (delta: 462.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] unsigned a, b; [L21] unsigned x, y, u, v; [L22] a = __VERIFIER_nondet_uint() [L9] COND FALSE !(!cond) [L24] b = __VERIFIER_nondet_uint() [L9] COND FALSE !(!cond) [L9] COND FALSE !(!cond) [L9] COND FALSE !(!cond) [L9] COND FALSE !(!cond) [L9] COND FALSE !(!cond) [L32] x = a [L33] y = b [L34] u = b [L35] v = a [L37] COND TRUE 1 [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:25:15,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:25:15,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:25:15,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:25:15,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:25:15,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:25:15,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:25:15,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:25:15,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:25:15,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:25:15,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:25:15,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:25:15,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:25:15,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:25:15,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:25:15,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:25:15,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:25:15,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:25:15,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:25:15,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:25:15,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:25:15,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:25:15,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:25:15,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:25:15,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:25:15,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:25:15,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:25:15,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:25:15,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:25:15,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:25:15,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:25:15,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:25:15,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:25:15,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:25:15,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:25:15,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:25:15,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:25:15,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:25:15,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:25:15,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:25:15,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:25:15,939 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-11 00:25:15,980 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:25:15,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:25:15,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:25:15,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:25:15,983 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:25:15,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:25:15,984 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:25:15,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:25:15,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:25:15,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:25:15,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:25:15,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:25:15,986 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 00:25:15,986 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 00:25:15,987 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:25:15,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:25:15,987 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:25:15,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:25:15,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:25:15,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:25:15,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:25:15,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:25:15,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:25:15,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:25:15,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:25:15,990 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-11 00:25:15,990 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 00:25:15,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:25:15,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:25:15,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 00:25:15,991 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95bf89db758dccfb711b531182e65e2617c0d025 [2021-10-11 00:25:16,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:25:16,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:25:16,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:25:16,391 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:25:16,395 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:25:16,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound2.c [2021-10-11 00:25:16,475 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/data/a3a5b7234/2fb9691863ed4953a39e2f14bfe98868/FLAG7fa2e167f [2021-10-11 00:25:16,996 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:25:16,997 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound2.c [2021-10-11 00:25:17,004 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/data/a3a5b7234/2fb9691863ed4953a39e2f14bfe98868/FLAG7fa2e167f [2021-10-11 00:25:17,337 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/data/a3a5b7234/2fb9691863ed4953a39e2f14bfe98868 [2021-10-11 00:25:17,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:25:17,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:25:17,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:25:17,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:25:17,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:25:17,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:25:17" (1/1) ... [2021-10-11 00:25:17,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aeed6a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:17, skipping insertion in model container [2021-10-11 00:25:17,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:25:17" (1/1) ... [2021-10-11 00:25:17,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:25:17,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:25:17,530 WARN L226 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_00c05cf9-7cf5-4c80-b47b-fb8125218124/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound2.c[537,550] [2021-10-11 00:25:17,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:25:17,557 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:25:17,574 WARN L226 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_00c05cf9-7cf5-4c80-b47b-fb8125218124/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound2.c[537,550] [2021-10-11 00:25:17,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:25:17,595 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:25:17,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:17 WrapperNode [2021-10-11 00:25:17,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:25:17,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:25:17,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:25:17,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:25:17,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:17" (1/1) ... [2021-10-11 00:25:17,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:17" (1/1) ... [2021-10-11 00:25:17,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:25:17,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:25:17,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:25:17,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:25:17,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:17" (1/1) ... [2021-10-11 00:25:17,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:17" (1/1) ... [2021-10-11 00:25:17,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:17" (1/1) ... [2021-10-11 00:25:17,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:17" (1/1) ... [2021-10-11 00:25:17,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:17" (1/1) ... [2021-10-11 00:25:17,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:17" (1/1) ... [2021-10-11 00:25:17,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:17" (1/1) ... [2021-10-11 00:25:17,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:25:17,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:25:17,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:25:17,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:25:17,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:17" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:25:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 00:25:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:25:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:25:17,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:25:18,294 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:25:18,295 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-11 00:25:18,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:25:18 BoogieIcfgContainer [2021-10-11 00:25:18,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:25:18,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:25:18,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:25:18,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:25:18,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:25:17" (1/3) ... [2021-10-11 00:25:18,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65516e1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:25:18, skipping insertion in model container [2021-10-11 00:25:18,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:25:17" (2/3) ... [2021-10-11 00:25:18,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65516e1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:25:18, skipping insertion in model container [2021-10-11 00:25:18,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:25:18" (3/3) ... [2021-10-11 00:25:18,320 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound2.c [2021-10-11 00:25:18,355 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:25:18,371 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 00:25:18,382 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 00:25:18,428 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:25:18,430 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:25:18,430 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:25:18,430 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:25:18,431 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:25:18,431 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:25:18,431 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:25:18,431 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:25:18,448 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2021-10-11 00:25:18,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:25:18,454 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:25:18,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:25:18,456 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:25:18,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:25:18,462 INFO L82 PathProgramCache]: Analyzing trace with hash 822857436, now seen corresponding path program 1 times [2021-10-11 00:25:18,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:25:18,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910477455] [2021-10-11 00:25:18,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 00:25:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:25:18,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 00:25:18,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:25:18,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:18,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:25:18,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910477455] [2021-10-11 00:25:18,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:25:18,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:25:18,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485182070] [2021-10-11 00:25:18,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:25:18,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:25:18,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:25:18,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:25:18,724 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2021-10-11 00:25:18,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:25:18,752 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2021-10-11 00:25:18,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:25:18,753 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2021-10-11 00:25:18,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:25:18,767 INFO L225 Difference]: With dead ends: 53 [2021-10-11 00:25:18,767 INFO L226 Difference]: Without dead ends: 24 [2021-10-11 00:25:18,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:25:18,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-11 00:25:18,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-11 00:25:18,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-11 00:25:18,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-10-11 00:25:18,809 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 17 [2021-10-11 00:25:18,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:25:18,810 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-10-11 00:25:18,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:25:18,810 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-10-11 00:25:18,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:25:18,812 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:25:18,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:25:19,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 00:25:19,019 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:25:19,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:25:19,020 INFO L82 PathProgramCache]: Analyzing trace with hash 2114165096, now seen corresponding path program 1 times [2021-10-11 00:25:19,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:25:19,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661659409] [2021-10-11 00:25:19,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 00:25:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:25:19,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-11 00:25:19,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:25:19,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:19,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:25:19,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661659409] [2021-10-11 00:25:19,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:25:19,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-11 00:25:19,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816634794] [2021-10-11 00:25:19,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 00:25:19,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:25:19,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 00:25:19,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:25:19,609 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 12 states. [2021-10-11 00:25:19,949 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 11 [2021-10-11 00:25:20,134 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2021-10-11 00:25:20,309 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 24 [2021-10-11 00:25:20,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:25:20,650 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-10-11 00:25:20,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-11 00:25:20,651 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2021-10-11 00:25:20,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:25:20,652 INFO L225 Difference]: With dead ends: 35 [2021-10-11 00:25:20,652 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 00:25:20,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=119, Invalid=223, Unknown=0, NotChecked=0, Total=342 [2021-10-11 00:25:20,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 00:25:20,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-10-11 00:25:20,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:25:20,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-11 00:25:20,659 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 17 [2021-10-11 00:25:20,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:25:20,660 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-11 00:25:20,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 00:25:20,660 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-11 00:25:20,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:25:20,661 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:25:20,661 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:25:20,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 00:25:20,873 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:25:20,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:25:20,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1065279453, now seen corresponding path program 1 times [2021-10-11 00:25:20,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:25:20,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551815390] [2021-10-11 00:25:20,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 00:25:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:25:20,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-11 00:25:20,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:25:21,704 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-10-11 00:25:21,729 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:25:21,740 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-10-11 00:25:21,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:21,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 00:25:22,616 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-10-11 00:25:23,502 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-10-11 00:25:23,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:23,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1551815390] [2021-10-11 00:25:23,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:25:23,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5] total 16 [2021-10-11 00:25:23,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984890010] [2021-10-11 00:25:23,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-10-11 00:25:23,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:25:23,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-11 00:25:23,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-11 00:25:23,561 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 16 states. [2021-10-11 00:25:25,283 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2021-10-11 00:25:25,448 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 24 [2021-10-11 00:25:25,692 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 29 [2021-10-11 00:25:26,915 WARN L197 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 26 [2021-10-11 00:25:33,736 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 15 [2021-10-11 00:25:35,117 WARN L197 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2021-10-11 00:25:36,554 WARN L197 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 45 DAG size of output: 27 [2021-10-11 00:25:36,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:25:36,775 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2021-10-11 00:25:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-11 00:25:36,779 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2021-10-11 00:25:36,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:25:36,780 INFO L225 Difference]: With dead ends: 50 [2021-10-11 00:25:36,781 INFO L226 Difference]: Without dead ends: 33 [2021-10-11 00:25:36,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=243, Invalid=513, Unknown=0, NotChecked=0, Total=756 [2021-10-11 00:25:36,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-11 00:25:36,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-10-11 00:25:36,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-10-11 00:25:36,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2021-10-11 00:25:36,789 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 21 [2021-10-11 00:25:36,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:25:36,789 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2021-10-11 00:25:36,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-10-11 00:25:36,789 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2021-10-11 00:25:36,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 00:25:36,790 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:25:36,791 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:25:37,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 00:25:37,010 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:25:37,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:25:37,010 INFO L82 PathProgramCache]: Analyzing trace with hash 2082154062, now seen corresponding path program 1 times [2021-10-11 00:25:37,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:25:37,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779454171] [2021-10-11 00:25:37,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00c05cf9-7cf5-4c80-b47b-fb8125218124/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2021-10-11 00:25:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:25:37,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-11 00:25:37,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:25:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:37,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:25:37,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779454171] [2021-10-11 00:25:37,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:25:37,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-11 00:25:37,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453682762] [2021-10-11 00:25:37,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-10-11 00:25:37,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:25:37,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-11 00:25:37,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-11 00:25:37,668 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 13 states. [2021-10-11 00:25:38,271 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2021-10-11 00:25:38,415 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 25 [2021-10-11 00:25:38,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:25:38,438 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-10-11 00:25:38,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-11 00:25:38,455 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2021-10-11 00:25:38,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:25:38,455 INFO L225 Difference]: With dead ends: 35 [2021-10-11 00:25:38,455 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:25:38,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2021-10-11 00:25:38,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:25:38,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:25:38,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:25:38,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:25:38,457 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-10-11 00:25:38,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:25:38,458 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:25:38,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-10-11 00:25:38,458 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:25:38,458 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:25:38,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 00:25:38,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:25:39,671 WARN L197 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2021-10-11 00:25:40,732 WARN L197 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2021-10-11 00:25:40,734 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-11 00:25:40,735 INFO L265 CegarLoopResult]: At program point L56(lines 19 57) the Hoare annotation is: true [2021-10-11 00:25:40,735 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 00:25:40,735 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:25:40,735 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:25:40,735 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-11 00:25:40,735 INFO L262 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-11 00:25:40,736 INFO L258 CegarLoopResult]: At program point L12-2(lines 40 41) the Hoare annotation is: (let ((.cse0 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse2 (bvule ULTIMATE.start_main_~b~0 (_ bv2 32))) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse3 (bvuge ULTIMATE.start_main_~x~0 (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~b~0) (bvule ULTIMATE.start_main_~x~0 (_ bv2 32)) (bvuge ULTIMATE.start_main_~y~0 (_ bv1 32)) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~u~0) .cse3 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~v~0) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (let ((.cse4 (bvadd ULTIMATE.start_main_~y~0 (bvmul (bvneg ULTIMATE.start_main_~x~0) (_ bv4294967295 32))))) (and (bvuge ULTIMATE.start_main_~b~0 (_ bv1 32)) (bvule ULTIMATE.start_main_~a~0 (_ bv2 32)) (= (bvadd (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~v~0) (bvmul ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~u~0)) (bvmul (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) (_ bv2 32))) (not (= ULTIMATE.start_main_~x~0 .cse4)) .cse0 .cse2 .cse1 .cse3 (bvule .cse4 (_ bv2 32)) (not (bvugt ULTIMATE.start_main_~x~0 .cse4)) (bvuge ULTIMATE.start_main_~a~0 (_ bv1 32)))))) [2021-10-11 00:25:40,736 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-11 00:25:40,736 INFO L262 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-10-11 00:25:40,736 INFO L262 CegarLoopResult]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2021-10-11 00:25:40,736 INFO L265 CegarLoopResult]: At program point L12-5(lines 11 17) the Hoare annotation is: true [2021-10-11 00:25:40,737 INFO L262 CegarLoopResult]: For program point L8-2(lines 8 10) no Hoare annotation was computed. [2021-10-11 00:25:40,737 INFO L262 CegarLoopResult]: For program point L8-3(lines 8 10) no Hoare annotation was computed. [2021-10-11 00:25:40,737 INFO L262 CegarLoopResult]: For program point L8-4(lines 8 10) no Hoare annotation was computed. [2021-10-11 00:25:40,737 INFO L262 CegarLoopResult]: For program point L8-5(lines 8 10) no Hoare annotation was computed. [2021-10-11 00:25:40,737 INFO L262 CegarLoopResult]: For program point L37-2(lines 37 50) no Hoare annotation was computed. [2021-10-11 00:25:40,737 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:25:40,737 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-11 00:25:40,738 INFO L262 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-11 00:25:40,738 INFO L262 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2021-10-11 00:25:40,738 INFO L262 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2021-10-11 00:25:40,738 INFO L262 CegarLoopResult]: For program point L9-4(line 9) no Hoare annotation was computed. [2021-10-11 00:25:40,738 INFO L262 CegarLoopResult]: For program point L9-6(line 9) no Hoare annotation was computed. [2021-10-11 00:25:40,738 INFO L262 CegarLoopResult]: For program point L9-8(line 9) no Hoare annotation was computed. [2021-10-11 00:25:40,739 INFO L262 CegarLoopResult]: For program point L9-10(line 9) no Hoare annotation was computed. [2021-10-11 00:25:40,739 INFO L262 CegarLoopResult]: For program point L43(lines 43 49) no Hoare annotation was computed. [2021-10-11 00:25:40,739 INFO L258 CegarLoopResult]: At program point L43-2(lines 37 50) the Hoare annotation is: (let ((.cse2 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse1 (bvule ULTIMATE.start_main_~b~0 (_ bv2 32))) (.cse3 (bvuge ULTIMATE.start_main_~x~0 (_ bv1 32)))) (or (let ((.cse0 (bvadd ULTIMATE.start_main_~y~0 (bvmul (bvneg ULTIMATE.start_main_~x~0) (_ bv4294967295 32))))) (and (bvuge ULTIMATE.start_main_~b~0 (_ bv1 32)) (bvule ULTIMATE.start_main_~a~0 (_ bv2 32)) (= (bvadd (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~v~0) (bvmul ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~u~0)) (bvmul (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) (_ bv2 32))) (not (= ULTIMATE.start_main_~x~0 .cse0)) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) .cse1 .cse2 .cse3 (bvule .cse0 (_ bv2 32)) (not (bvugt ULTIMATE.start_main_~x~0 .cse0)) (bvuge ULTIMATE.start_main_~a~0 (_ bv1 32)))) (and (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~b~0) (bvule ULTIMATE.start_main_~x~0 (_ bv2 32)) (bvuge ULTIMATE.start_main_~y~0 (_ bv1 32)) .cse2 .cse1 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~u~0) .cse3 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~v~0) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)))) [2021-10-11 00:25:40,745 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:796) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:240) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-11 00:25:40,748 INFO L168 Benchmark]: Toolchain (without parser) took 23406.38 ms. Allocated memory was 62.9 MB in the beginning and 107.0 MB in the end (delta: 44.0 MB). Free memory was 44.1 MB in the beginning and 72.0 MB in the end (delta: -27.8 MB). Peak memory consumption was 57.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:40,749 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 62.9 MB. Free memory is still 45.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:25:40,750 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.59 ms. Allocated memory is still 62.9 MB. Free memory was 44.0 MB in the beginning and 33.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:40,750 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.84 ms. Allocated memory is still 62.9 MB. Free memory was 33.5 MB in the beginning and 46.7 MB in the end (delta: -13.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:40,751 INFO L168 Benchmark]: Boogie Preprocessor took 28.05 ms. Allocated memory is still 62.9 MB. Free memory was 46.7 MB in the beginning and 45.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:25:40,752 INFO L168 Benchmark]: RCFGBuilder took 578.87 ms. Allocated memory is still 62.9 MB. Free memory was 45.3 MB in the beginning and 30.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:40,753 INFO L168 Benchmark]: TraceAbstraction took 22449.44 ms. Allocated memory was 62.9 MB in the beginning and 107.0 MB in the end (delta: 44.0 MB). Free memory was 29.7 MB in the beginning and 72.0 MB in the end (delta: -42.2 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:40,756 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 62.9 MB. Free memory is still 45.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 253.59 ms. Allocated memory is still 62.9 MB. Free memory was 44.0 MB in the beginning and 33.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.84 ms. Allocated memory is still 62.9 MB. Free memory was 33.5 MB in the beginning and 46.7 MB in the end (delta: -13.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.05 ms. Allocated memory is still 62.9 MB. Free memory was 46.7 MB in the beginning and 45.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 578.87 ms. Allocated memory is still 62.9 MB. Free memory was 45.3 MB in the beginning and 30.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22449.44 ms. Allocated memory was 62.9 MB in the beginning and 107.0 MB in the end (delta: 44.0 MB). Free memory was 29.7 MB in the beginning and 72.0 MB in the end (delta: -42.2 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...