./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/phases_2-2.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_08f3bc53-df93-4239-9e73-d5691f9201f2/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f3bc53-df93-4239-9e73-d5691f9201f2/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f3bc53-df93-4239-9e73-d5691f9201f2/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f3bc53-df93-4239-9e73-d5691f9201f2/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/phases_2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f3bc53-df93-4239-9e73-d5691f9201f2/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f3bc53-df93-4239-9e73-d5691f9201f2/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85d8c0857ba90e2936a809e6bce9dcb97e8e7e59 .................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:24:18,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:18,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:18,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:18,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:18,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:18,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:18,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:18,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:18,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:18,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:18,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:18,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:18,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:18,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:18,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:18,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:18,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:18,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:18,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:18,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:18,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:18,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:18,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:18,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:18,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:18,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:18,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:18,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:18,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:18,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:18,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:18,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:18,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:18,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:18,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:18,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:18,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:18,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:18,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:18,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:18,329 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f3bc53-df93-4239-9e73-d5691f9201f2/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:24:18,369 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:18,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:18,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:18,371 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:18,371 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:18,371 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:18,372 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:24:18,372 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:18,378 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:18,378 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:24:18,379 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:24:18,380 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:18,380 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:24:18,380 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:24:18,380 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:24:18,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:18,381 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:24:18,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:24:18,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:24:18,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:18,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:18,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:18,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:18,383 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:24:18,383 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:24:18,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:18,384 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:18,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:18,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:18,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:18,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:18,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:18,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:18,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:18,386 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:24:18,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:24:18,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:18,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:18,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:18,387 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_08f3bc53-df93-4239-9e73-d5691f9201f2/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f3bc53-df93-4239-9e73-d5691f9201f2/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85d8c0857ba90e2936a809e6bce9dcb97e8e7e59 [2021-10-11 02:24:18,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:18,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:18,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:18,700 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:18,703 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:18,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f3bc53-df93-4239-9e73-d5691f9201f2/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-acceleration/phases_2-2.c [2021-10-11 02:24:18,791 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f3bc53-df93-4239-9e73-d5691f9201f2/bin/utaipan-WLngWcDbfI/data/e7b5b663f/eefa35e83ee544709241dc12e6e1083e/FLAGac0157476 [2021-10-11 02:24:19,227 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:19,229 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f3bc53-df93-4239-9e73-d5691f9201f2/sv-benchmarks/c/loop-acceleration/phases_2-2.c [2021-10-11 02:24:19,241 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f3bc53-df93-4239-9e73-d5691f9201f2/bin/utaipan-WLngWcDbfI/data/e7b5b663f/eefa35e83ee544709241dc12e6e1083e/FLAGac0157476 [2021-10-11 02:24:19,617 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f3bc53-df93-4239-9e73-d5691f9201f2/bin/utaipan-WLngWcDbfI/data/e7b5b663f/eefa35e83ee544709241dc12e6e1083e [2021-10-11 02:24:19,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:19,621 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:19,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:19,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:19,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:19,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:19" (1/1) ... [2021-10-11 02:24:19,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74101750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:19, skipping insertion in model container [2021-10-11 02:24:19,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:19" (1/1) ... [2021-10-11 02:24:19,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:19,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:19,824 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_08f3bc53-df93-4239-9e73-d5691f9201f2/sv-benchmarks/c/loop-acceleration/phases_2-2.c[459,472] [2021-10-11 02:24:19,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:19,845 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:19,857 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_08f3bc53-df93-4239-9e73-d5691f9201f2/sv-benchmarks/c/loop-acceleration/phases_2-2.c[459,472] [2021-10-11 02:24:19,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:19,875 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:19,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:19 WrapperNode [2021-10-11 02:24:19,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:19,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:19,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:19,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:19,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:19" (1/1) ... [2021-10-11 02:24:19,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:19" (1/1) ... [2021-10-11 02:24:19,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:19,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:19,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:19,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:19,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:19" (1/1) ... [2021-10-11 02:24:19,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:19" (1/1) ... [2021-10-11 02:24:19,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:19" (1/1) ... [2021-10-11 02:24:19,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:19" (1/1) ... [2021-10-11 02:24:19,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:19" (1/1) ... [2021-10-11 02:24:19,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:19" (1/1) ... [2021-10-11 02:24:19,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:19" (1/1) ... [2021-10-11 02:24:19,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:19,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:19,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:19,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:19,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:19" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f3bc53-df93-4239-9e73-d5691f9201f2/bin/utaipan-WLngWcDbfI/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 02:24:20,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:24:20,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:24:20,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:20,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:20,457 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:20,458 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:24:20,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:20 BoogieIcfgContainer [2021-10-11 02:24:20,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:20,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:20,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:20,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:20,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:19" (1/3) ... [2021-10-11 02:24:20,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c74c1c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:20, skipping insertion in model container [2021-10-11 02:24:20,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:19" (2/3) ... [2021-10-11 02:24:20,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c74c1c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:20, skipping insertion in model container [2021-10-11 02:24:20,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:20" (3/3) ... [2021-10-11 02:24:20,485 INFO L111 eAbstractionObserver]: Analyzing ICFG phases_2-2.c [2021-10-11 02:24:20,514 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:20,517 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:24:20,534 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:24:20,564 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:20,564 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:20,564 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:20,565 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:20,565 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:20,565 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:20,565 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:20,565 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:20,576 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2021-10-11 02:24:20,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:24:20,581 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:20,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:24:20,583 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:20,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:20,589 INFO L82 PathProgramCache]: Analyzing trace with hash 65820781, now seen corresponding path program 1 times [2021-10-11 02:24:20,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:20,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066688085] [2021-10-11 02:24:20,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:20,854 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 02:24:20,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066688085] [2021-10-11 02:24:20,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:20,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:24:20,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56744022] [2021-10-11 02:24:20,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:24:20,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:20,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:24:20,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:20,880 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 5 states. [2021-10-11 02:24:20,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:20,940 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-10-11 02:24:20,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:20,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2021-10-11 02:24:20,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:20,948 INFO L225 Difference]: With dead ends: 12 [2021-10-11 02:24:20,948 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:24:20,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:24:20,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:24:20,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:24:20,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:24:20,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:24:20,975 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-10-11 02:24:20,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:20,975 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:24:20,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:24:20,976 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:24:20,976 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:24:20,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:24:20,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:24:20,999 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:24:20,999 INFO L262 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2021-10-11 02:24:20,999 INFO L262 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-10-11 02:24:20,999 INFO L258 CegarLoopResult]: At program point L11-2(lines 1 32) the Hoare annotation is: (= ULTIMATE.start_main_~x~0 1) [2021-10-11 02:24:21,000 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:24:21,000 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-11 02:24:21,000 INFO L258 CegarLoopResult]: At program point L24-2(lines 23 29) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 1) (<= (+ (* 4294967296 (div ULTIMATE.start_main_~y~0 4294967296)) 1) ULTIMATE.start_main_~y~0)) [2021-10-11 02:24:21,000 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-11 02:24:21,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:21 BoogieIcfgContainer [2021-10-11 02:24:21,021 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:21,024 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:21,025 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:21,025 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:21,026 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:20" (3/4) ... [2021-10-11 02:24:21,030 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:24:21,041 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-11 02:24:21,041 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-11 02:24:21,042 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:24:21,042 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:24:21,078 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f3bc53-df93-4239-9e73-d5691f9201f2/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:21,078 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:21,080 INFO L168 Benchmark]: Toolchain (without parser) took 1457.93 ms. Allocated memory is still 123.7 MB. Free memory was 90.0 MB in the beginning and 53.7 MB in the end (delta: 36.3 MB). Peak memory consumption was 34.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:21,081 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 53.8 MB in the beginning and 53.8 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:21,082 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.55 ms. Allocated memory is still 123.7 MB. Free memory was 89.5 MB in the beginning and 99.8 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:21,082 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.26 ms. Allocated memory is still 123.7 MB. Free memory was 99.8 MB in the beginning and 98.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:21,083 INFO L168 Benchmark]: Boogie Preprocessor took 48.29 ms. Allocated memory is still 123.7 MB. Free memory was 98.6 MB in the beginning and 97.7 MB in the end (delta: 874.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:21,084 INFO L168 Benchmark]: RCFGBuilder took 486.72 ms. Allocated memory is still 123.7 MB. Free memory was 97.7 MB in the beginning and 82.4 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:21,084 INFO L168 Benchmark]: TraceAbstraction took 559.16 ms. Allocated memory is still 123.7 MB. Free memory was 82.4 MB in the beginning and 56.4 MB in the end (delta: 26.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:21,085 INFO L168 Benchmark]: Witness Printer took 54.20 ms. Allocated memory is still 123.7 MB. Free memory was 56.4 MB in the beginning and 53.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:21,089 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 53.8 MB in the beginning and 53.8 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 253.55 ms. Allocated memory is still 123.7 MB. Free memory was 89.5 MB in the beginning and 99.8 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.26 ms. Allocated memory is still 123.7 MB. Free memory was 99.8 MB in the beginning and 98.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.29 ms. Allocated memory is still 123.7 MB. Free memory was 98.6 MB in the beginning and 97.7 MB in the end (delta: 874.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 486.72 ms. Allocated memory is still 123.7 MB. Free memory was 97.7 MB in the beginning and 82.4 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 559.16 ms. Allocated memory is still 123.7 MB. Free memory was 82.4 MB in the beginning and 56.4 MB in the end (delta: 26.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 54.20 ms. Allocated memory is still 123.7 MB. Free memory was 56.4 MB in the beginning and 53.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: x == 1 && 4294967296 * (y / 4294967296) + 1 <= y - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: x == 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 10 SDslu, 5 SDs, 0 SdLazy, 6 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred 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: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 16 HoareAnnotationTreeSize, 2 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 84 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 proved your program to be correct! Received shutdown request...