./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_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_5c364d63-92a6-425f-99e3-6fddb1275cc2/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c364d63-92a6-425f-99e3-6fddb1275cc2/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_5c364d63-92a6-425f-99e3-6fddb1275cc2/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c364d63-92a6-425f-99e3-6fddb1275cc2/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c364d63-92a6-425f-99e3-6fddb1275cc2/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_5c364d63-92a6-425f-99e3-6fddb1275cc2/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 4010987a9491115d77d9d3fb6c886df4539bd24a ........................................................................................................................................................................................................................................................................................................................................ 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 02:27:00,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:00,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:00,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:00,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:00,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:00,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:00,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:00,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:00,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:00,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:00,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:00,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:00,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:00,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:00,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:00,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:00,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:00,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:00,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:00,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:00,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:00,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:00,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:00,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:00,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:00,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:00,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:00,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:00,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:00,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:00,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:00,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:00,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:00,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:00,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:00,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:00,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:00,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:00,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:00,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:00,434 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c364d63-92a6-425f-99e3-6fddb1275cc2/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:27:00,483 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:00,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:00,485 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:00,485 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:00,485 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:00,485 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:00,485 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:00,486 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:00,486 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:00,486 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:00,486 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:00,486 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:00,487 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:00,487 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:00,487 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:00,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:00,488 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:00,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:00,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:00,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:00,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:00,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:00,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:00,489 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:00,497 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:00,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:00,498 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:00,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:00,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:00,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:00,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:00,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:00,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:00,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:00,502 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:00,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:00,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:00,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:00,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:00,504 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_5c364d63-92a6-425f-99e3-6fddb1275cc2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c364d63-92a6-425f-99e3-6fddb1275cc2/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4010987a9491115d77d9d3fb6c886df4539bd24a [2021-10-11 02:27:00,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:00,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:00,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:00,812 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:00,818 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:00,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c364d63-92a6-425f-99e3-6fddb1275cc2/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound2.c [2021-10-11 02:27:00,875 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c364d63-92a6-425f-99e3-6fddb1275cc2/bin/utaipan-WLngWcDbfI/data/fe5d0faf8/d338c94526cd4807b4dbe5ce177cbca1/FLAG67f2b88a5 [2021-10-11 02:27:01,360 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:01,361 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c364d63-92a6-425f-99e3-6fddb1275cc2/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound2.c [2021-10-11 02:27:01,378 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c364d63-92a6-425f-99e3-6fddb1275cc2/bin/utaipan-WLngWcDbfI/data/fe5d0faf8/d338c94526cd4807b4dbe5ce177cbca1/FLAG67f2b88a5 [2021-10-11 02:27:01,743 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c364d63-92a6-425f-99e3-6fddb1275cc2/bin/utaipan-WLngWcDbfI/data/fe5d0faf8/d338c94526cd4807b4dbe5ce177cbca1 [2021-10-11 02:27:01,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:01,747 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:01,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:01,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:01,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:01,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:01" (1/1) ... [2021-10-11 02:27:01,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bfb3ebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:01, skipping insertion in model container [2021-10-11 02:27:01,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:01" (1/1) ... [2021-10-11 02:27:01,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:01,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:01,953 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_5c364d63-92a6-425f-99e3-6fddb1275cc2/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound2.c[535,548] [2021-10-11 02:27:01,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:01,982 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:01,995 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_5c364d63-92a6-425f-99e3-6fddb1275cc2/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound2.c[535,548] [2021-10-11 02:27:02,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:02,020 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:02,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:02 WrapperNode [2021-10-11 02:27:02,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:02,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:02,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:02,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:02,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:02" (1/1) ... [2021-10-11 02:27:02,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:02" (1/1) ... [2021-10-11 02:27:02,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:02,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:02,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:02,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:02,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:02" (1/1) ... [2021-10-11 02:27:02,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:02" (1/1) ... [2021-10-11 02:27:02,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:02" (1/1) ... [2021-10-11 02:27:02,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:02" (1/1) ... [2021-10-11 02:27:02,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:02" (1/1) ... [2021-10-11 02:27:02,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:02" (1/1) ... [2021-10-11 02:27:02,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:02" (1/1) ... [2021-10-11 02:27:02,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:02,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:02,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:02,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:02,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:02" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c364d63-92a6-425f-99e3-6fddb1275cc2/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 02:27:02,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:27:02,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:02,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:02,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:11,658 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:11,658 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-10-11 02:27:11,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:11 BoogieIcfgContainer [2021-10-11 02:27:11,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:11,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:11,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:11,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:11,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:01" (1/3) ... [2021-10-11 02:27:11,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55935cef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:11, skipping insertion in model container [2021-10-11 02:27:11,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:02" (2/3) ... [2021-10-11 02:27:11,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55935cef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:11, skipping insertion in model container [2021-10-11 02:27:11,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:11" (3/3) ... [2021-10-11 02:27:11,670 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound2.c [2021-10-11 02:27:11,684 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:11,687 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 02:27:11,698 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:27:11,722 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:11,723 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:11,723 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:11,723 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:11,723 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:11,723 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:11,724 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:11,724 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:11,737 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2021-10-11 02:27:11,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:27:11,742 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:11,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:27:11,744 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:11,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:11,750 INFO L82 PathProgramCache]: Analyzing trace with hash 5222459, now seen corresponding path program 1 times [2021-10-11 02:27:11,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:11,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289921043] [2021-10-11 02:27:11,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:11,840 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:27:11,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300940802] [2021-10-11 02:27:11,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c364d63-92a6-425f-99e3-6fddb1275cc2/bin/utaipan-WLngWcDbfI/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 02:27:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:11,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-11 02:27:11,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:12,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289921043] [2021-10-11 02:27:12,146 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:12,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300940802] [2021-10-11 02:27:12,146 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-10-11 02:27:12,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2026269016] [2021-10-11 02:27:12,176 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2021-10-11 02:27:12,176 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:27:12,180 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:27:12,189 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:27:12,189 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:27:12,304 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:27:12,539 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:27:12,876 WARN L197 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-10-11 02:27:19,801 WARN L197 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 99 DAG size of output: 88 [2021-10-11 02:27:19,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:19,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:19,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031569315] [2021-10-11 02:27:19,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:19,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:19,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:19,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=9, Unknown=1, NotChecked=0, Total=20 [2021-10-11 02:27:19,827 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2021-10-11 02:27:19,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:19,914 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2021-10-11 02:27:19,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:19,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2021-10-11 02:27:19,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:19,927 INFO L225 Difference]: With dead ends: 29 [2021-10-11 02:27:19,927 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:27:19,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=10, Invalid=9, Unknown=1, NotChecked=0, Total=20 [2021-10-11 02:27:19,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:27:19,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:27:19,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:27:19,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:27:19,956 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-10-11 02:27:19,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:19,957 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:27:19,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:19,958 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:27:19,958 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:27:20,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-11 02:27:20,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:27:20,383 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-10-11 02:27:24,599 WARN L197 SmtUtils]: Spent 4.21 s on a formula simplification that was a NOOP. DAG size: 88 [2021-10-11 02:27:24,703 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-10-11 02:27:24,706 INFO L262 CegarLoopResult]: For program point L35-2(lines 35 55) no Hoare annotation was computed. [2021-10-11 02:27:24,710 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-11 02:27:24,710 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:27:24,711 INFO L262 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-11 02:27:24,712 INFO L258 CegarLoopResult]: At program point L12-2(lines 37 38) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~R~0 ULTIMATE.start_main_~R~0)) (.cse1 (* 2 ULTIMATE.start_main_~R~0)) (.cse2 (select |#memory_int| |#t~string4.base|))) (and (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (= .cse0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (= 13 (select |#length| |#t~string5.base|)) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string5.base|) 1) (= (select |#valid| |#t~string4.base|) 1) (= ULTIMATE.start_main_~u~0 (+ .cse1 1)) (= |#t~string5.offset| 0) (= 12 (select |#length| |#t~string6.base|)) (< |#StackHeapBarrier| |#t~string5.base|) (= |#NULL.offset| 0) (<= ULTIMATE.start_main_~A~0 2) (= 0 |#t~string4.offset|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| (ite (= (+ (* ULTIMATE.start_main_~u~0 (- 2)) (* ULTIMATE.start_main_~v~0 2) (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0) (* (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0) (- 1))) (+ (* ULTIMATE.start_main_~A~0 4) (* ULTIMATE.start_main_~r~0 4))) 1 0)) (= 2 (select |#length| |#t~string4.base|)) (= |#NULL.base| 0) (< (+ .cse0 1) (+ .cse1 ULTIMATE.start_main_~A~0)) (= (mod ULTIMATE.start_main_~A~0 2) 1) (= (select |#valid| |#t~string6.base|) 1) (= 48 (select .cse2 |#t~string4.offset|)) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (< |#StackHeapBarrier| |#t~string6.base|) (< |#StackHeapBarrier| |#t~string4.base|) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| ULTIMATE.start_assume_abort_if_not_~cond) (< 0 |#StackHeapBarrier|) (= |#t~string6.offset| 0) (= (select .cse2 (+ |#t~string4.offset| 1)) 0) (= ULTIMATE.start_main_~v~0 1))) [2021-10-11 02:27:24,712 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-11 02:27:24,713 INFO L258 CegarLoopResult]: At program point L12-5(lines 42 43) the Hoare annotation is: false [2021-10-11 02:27:24,713 INFO L262 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-10-11 02:27:24,713 INFO L258 CegarLoopResult]: At program point L12-8(lines 50 51) the Hoare annotation is: false [2021-10-11 02:27:24,713 INFO L262 CegarLoopResult]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-10-11 02:27:24,717 INFO L258 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~R~0 ULTIMATE.start_main_~R~0)) (.cse1 (* 2 ULTIMATE.start_main_~R~0)) (.cse2 (select |#memory_int| |#t~string4.base|))) (and (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (= .cse0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (= 13 (select |#length| |#t~string5.base|)) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string5.base|) 1) (= (select |#valid| |#t~string4.base|) 1) (= ULTIMATE.start_main_~u~0 (+ .cse1 1)) (= |#t~string5.offset| 0) (= 12 (select |#length| |#t~string6.base|)) (< |#StackHeapBarrier| |#t~string5.base|) (= |#NULL.offset| 0) (<= ULTIMATE.start_main_~A~0 2) (= 0 |#t~string4.offset|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| (ite (= (+ (* ULTIMATE.start_main_~u~0 (- 2)) (* ULTIMATE.start_main_~v~0 2) (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0) (* (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0) (- 1))) (+ (* ULTIMATE.start_main_~A~0 4) (* ULTIMATE.start_main_~r~0 4))) 1 0)) (= 2 (select |#length| |#t~string4.base|)) (= |#NULL.base| 0) (< (+ .cse0 1) (+ .cse1 ULTIMATE.start_main_~A~0)) (= (mod ULTIMATE.start_main_~A~0 2) 1) (= (select |#valid| |#t~string6.base|) 1) (= 48 (select .cse2 |#t~string4.offset|)) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (< |#StackHeapBarrier| |#t~string6.base|) (< |#StackHeapBarrier| |#t~string4.base|) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| ULTIMATE.start_assume_abort_if_not_~cond) (< 0 |#StackHeapBarrier|) (= |#t~string6.offset| 0) (= (select .cse2 (+ |#t~string4.offset| 1)) 0) (= ULTIMATE.start_main_~v~0 1))) [2021-10-11 02:27:24,718 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-11 02:27:24,718 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-11 02:27:24,718 INFO L262 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-11 02:27:24,719 INFO L262 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-10-11 02:27:24,720 INFO L262 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-10-11 02:27:24,720 INFO L262 CegarLoopResult]: For program point L48-1(lines 35 55) no Hoare annotation was computed. [2021-10-11 02:27:24,721 INFO L258 CegarLoopResult]: At program point L48-2(lines 35 55) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~R~0 ULTIMATE.start_main_~R~0)) (.cse1 (* 2 ULTIMATE.start_main_~R~0)) (.cse2 (select |#memory_int| |#t~string4.base|))) (and (= .cse0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (= 13 (select |#length| |#t~string5.base|)) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string5.base|) 1) (= (select |#valid| |#t~string4.base|) 1) (= ULTIMATE.start_main_~u~0 (+ .cse1 1)) (= |#t~string5.offset| 0) (= 12 (select |#length| |#t~string6.base|)) (< |#StackHeapBarrier| |#t~string5.base|) (= |#NULL.offset| 0) (<= ULTIMATE.start_main_~A~0 2) (= 0 |#t~string4.offset|) (= 2 (select |#length| |#t~string4.base|)) (= |#NULL.base| 0) (< (+ .cse0 1) (+ .cse1 ULTIMATE.start_main_~A~0)) (= (mod ULTIMATE.start_main_~A~0 2) 1) (= (select |#valid| |#t~string6.base|) 1) (= 48 (select .cse2 |#t~string4.offset|)) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (< |#StackHeapBarrier| |#t~string6.base|) (< |#StackHeapBarrier| |#t~string4.base|) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| ULTIMATE.start_assume_abort_if_not_~cond) (< 0 |#StackHeapBarrier|) (= |#t~string6.offset| 0) (= (select .cse2 (+ |#t~string4.offset| 1)) 0) (= ULTIMATE.start_main_~v~0 1))) [2021-10-11 02:27:24,721 INFO L258 CegarLoopResult]: At program point L40-2(lines 40 46) the Hoare annotation is: false [2021-10-11 02:27:24,722 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-11 02:27:24,723 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:27:24,726 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-11 02:27:24,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:24 BoogieIcfgContainer [2021-10-11 02:27:24,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:24,789 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:24,789 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:24,789 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:24,790 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:11" (3/4) ... [2021-10-11 02:27:24,792 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:27:24,806 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2021-10-11 02:27:24,807 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 02:27:24,807 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:27:24,808 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:24,835 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((R * R == r + A && 13 == unknown-#length-unknown["fermat1-ll.c"]) && \valid[0] == 0) && \valid["fermat1-ll.c"] == 1) && \valid["0"] == 1) && u == 2 * R + 1) && "fermat1-ll.c" == 0) && 12 == unknown-#length-unknown["reach_error"]) && unknown-#StackHeapBarrier-unknown < "fermat1-ll.c") && #NULL == 0) && A <= 2) && 0 == "0") && 2 == unknown-#length-unknown["0"]) && #NULL == 0) && R * R + 1 < 2 * R + A) && A % 2 == 1) && \valid["reach_error"] == 1) && 48 == unknown-#memory_int-unknown["0"]["0"]) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "reach_error") && unknown-#StackHeapBarrier-unknown < "0") && \old(cond) == cond) && 0 < unknown-#StackHeapBarrier-unknown) && "reach_error" == 0) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && v == 1 [2021-10-11 02:27:24,836 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((((\old(cond) == cond && R * R == r + A) && 13 == unknown-#length-unknown["fermat1-ll.c"]) && \valid[0] == 0) && \valid["fermat1-ll.c"] == 1) && \valid["0"] == 1) && u == 2 * R + 1) && "fermat1-ll.c" == 0) && 12 == unknown-#length-unknown["reach_error"]) && unknown-#StackHeapBarrier-unknown < "fermat1-ll.c") && #NULL == 0) && A <= 2) && 0 == "0") && \old(cond) == (if u * -2 + v * 2 + u * u + v * v * -1 == A * 4 + r * 4 then 1 else 0)) && 2 == unknown-#length-unknown["0"]) && #NULL == 0) && R * R + 1 < 2 * R + A) && A % 2 == 1) && \valid["reach_error"] == 1) && 48 == unknown-#memory_int-unknown["0"]["0"]) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "reach_error") && unknown-#StackHeapBarrier-unknown < "0") && \old(cond) == cond) && 0 < unknown-#StackHeapBarrier-unknown) && "reach_error" == 0) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && v == 1 [2021-10-11 02:27:24,837 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((((\old(cond) == cond && R * R == r + A) && 13 == unknown-#length-unknown["fermat1-ll.c"]) && \valid[0] == 0) && \valid["fermat1-ll.c"] == 1) && \valid["0"] == 1) && u == 2 * R + 1) && "fermat1-ll.c" == 0) && 12 == unknown-#length-unknown["reach_error"]) && unknown-#StackHeapBarrier-unknown < "fermat1-ll.c") && #NULL == 0) && A <= 2) && 0 == "0") && \old(cond) == (if u * -2 + v * 2 + u * u + v * v * -1 == A * 4 + r * 4 then 1 else 0)) && 2 == unknown-#length-unknown["0"]) && #NULL == 0) && R * R + 1 < 2 * R + A) && A % 2 == 1) && \valid["reach_error"] == 1) && 48 == unknown-#memory_int-unknown["0"]["0"]) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "reach_error") && unknown-#StackHeapBarrier-unknown < "0") && \old(cond) == cond) && 0 < unknown-#StackHeapBarrier-unknown) && "reach_error" == 0) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && v == 1 [2021-10-11 02:27:24,880 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c364d63-92a6-425f-99e3-6fddb1275cc2/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:24,884 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:24,885 INFO L168 Benchmark]: Toolchain (without parser) took 23138.32 ms. Allocated memory was 88.1 MB in the beginning and 119.5 MB in the end (delta: 31.5 MB). Free memory was 50.9 MB in the beginning and 42.2 MB in the end (delta: 8.7 MB). Peak memory consumption was 40.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:24,886 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory is still 67.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:24,886 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.71 ms. Allocated memory was 88.1 MB in the beginning and 119.5 MB in the end (delta: 31.5 MB). Free memory was 50.7 MB in the beginning and 94.9 MB in the end (delta: -44.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:24,887 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.22 ms. Allocated memory is still 119.5 MB. Free memory was 94.9 MB in the beginning and 93.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:24,887 INFO L168 Benchmark]: Boogie Preprocessor took 51.44 ms. Allocated memory is still 119.5 MB. Free memory was 93.7 MB in the beginning and 92.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:24,888 INFO L168 Benchmark]: RCFGBuilder took 9548.03 ms. Allocated memory is still 119.5 MB. Free memory was 92.2 MB in the beginning and 65.0 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:24,888 INFO L168 Benchmark]: TraceAbstraction took 13125.93 ms. Allocated memory is still 119.5 MB. Free memory was 64.4 MB in the beginning and 45.2 MB in the end (delta: 19.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:24,889 INFO L168 Benchmark]: Witness Printer took 95.73 ms. Allocated memory is still 119.5 MB. Free memory was 45.2 MB in the beginning and 42.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:24,891 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory is still 67.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 272.71 ms. Allocated memory was 88.1 MB in the beginning and 119.5 MB in the end (delta: 31.5 MB). Free memory was 50.7 MB in the beginning and 94.9 MB in the end (delta: -44.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.22 ms. Allocated memory is still 119.5 MB. Free memory was 94.9 MB in the beginning and 93.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.44 ms. Allocated memory is still 119.5 MB. Free memory was 93.7 MB in the beginning and 92.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 9548.03 ms. Allocated memory is still 119.5 MB. Free memory was 92.2 MB in the beginning and 65.0 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13125.93 ms. Allocated memory is still 119.5 MB. Free memory was 64.4 MB in the beginning and 45.2 MB in the end (delta: 19.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. * Witness Printer took 95.73 ms. Allocated memory is still 119.5 MB. Free memory was 45.2 MB in the beginning and 42.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 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 - 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 4 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((\old(cond) == cond && R * R == r + A) && 13 == unknown-#length-unknown["fermat1-ll.c"]) && \valid[0] == 0) && \valid["fermat1-ll.c"] == 1) && \valid["0"] == 1) && u == 2 * R + 1) && "fermat1-ll.c" == 0) && 12 == unknown-#length-unknown["reach_error"]) && unknown-#StackHeapBarrier-unknown < "fermat1-ll.c") && #NULL == 0) && A <= 2) && 0 == "0") && \old(cond) == (if u * -2 + v * 2 + u * u + v * v * -1 == A * 4 + r * 4 then 1 else 0)) && 2 == unknown-#length-unknown["0"]) && #NULL == 0) && R * R + 1 < 2 * R + A) && A % 2 == 1) && \valid["reach_error"] == 1) && 48 == unknown-#memory_int-unknown["0"]["0"]) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "reach_error") && unknown-#StackHeapBarrier-unknown < "0") && \old(cond) == cond) && 0 < unknown-#StackHeapBarrier-unknown) && "reach_error" == 0) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && v == 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((\old(cond) == cond && R * R == r + A) && 13 == unknown-#length-unknown["fermat1-ll.c"]) && \valid[0] == 0) && \valid["fermat1-ll.c"] == 1) && \valid["0"] == 1) && u == 2 * R + 1) && "fermat1-ll.c" == 0) && 12 == unknown-#length-unknown["reach_error"]) && unknown-#StackHeapBarrier-unknown < "fermat1-ll.c") && #NULL == 0) && A <= 2) && 0 == "0") && \old(cond) == (if u * -2 + v * 2 + u * u + v * v * -1 == A * 4 + r * 4 then 1 else 0)) && 2 == unknown-#length-unknown["0"]) && #NULL == 0) && R * R + 1 < 2 * R + A) && A % 2 == 1) && \valid["reach_error"] == 1) && 48 == unknown-#memory_int-unknown["0"]["0"]) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "reach_error") && unknown-#StackHeapBarrier-unknown < "0") && \old(cond) == cond) && 0 < unknown-#StackHeapBarrier-unknown) && "reach_error" == 0) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && v == 1 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((R * R == r + A && 13 == unknown-#length-unknown["fermat1-ll.c"]) && \valid[0] == 0) && \valid["fermat1-ll.c"] == 1) && \valid["0"] == 1) && u == 2 * R + 1) && "fermat1-ll.c" == 0) && 12 == unknown-#length-unknown["reach_error"]) && unknown-#StackHeapBarrier-unknown < "fermat1-ll.c") && #NULL == 0) && A <= 2) && 0 == "0") && 2 == unknown-#length-unknown["0"]) && #NULL == 0) && R * R + 1 < 2 * R + A) && A % 2 == 1) && \valid["reach_error"] == 1) && 48 == unknown-#memory_int-unknown["0"]["0"]) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "reach_error") && unknown-#StackHeapBarrier-unknown < "0") && \old(cond) == cond) && 0 < unknown-#StackHeapBarrier-unknown) && "reach_error" == 0) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && v == 1 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 SDtfs, 9 SDslu, 0 SDs, 0 SdLazy, 6 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 6 LocationsWithAnnotation, 6 PreInvPairs, 9 NumberOfFragments, 428 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 4.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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: OVERALL_TIME[ms]: 364, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 4, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 3, TOOLS_POST_TIME[ms]: 272, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 3, TOOLS_QUANTIFIERELIM_TIME[ms]: 269, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 269, FLUID_QUERY_TIME[ms]: 2, FLUID_QUERIES: 7, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME[ms]: 0, DOMAIN_ISBOTTOM_APPLICATIONS: 4, DOMAIN_ISBOTTOM_TIME[ms]: 50, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 0, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 2, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 6, DAG_COMPRESSION_PROCESSED_NODES: 19, DAG_COMPRESSION_RETAINED_NODES: 13, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...