./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.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_1a0a32af-b8cf-48ab-9788-f115a3849913/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a0a32af-b8cf-48ab-9788-f115a3849913/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_1a0a32af-b8cf-48ab-9788-f115a3849913/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a0a32af-b8cf-48ab-9788-f115a3849913/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a0a32af-b8cf-48ab-9788-f115a3849913/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_1a0a32af-b8cf-48ab-9788-f115a3849913/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 c4525f606f22d0272ef924821cd05b7d138d7b34 ................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:21:13,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:13,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:13,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:13,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:13,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:13,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:13,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:13,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:14,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:14,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:14,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:14,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:14,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:14,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:14,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:14,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:14,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:14,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:14,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:14,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:14,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:14,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:14,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:14,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:14,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:14,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:14,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:14,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:14,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:14,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:14,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:14,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:14,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:14,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:14,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:14,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:14,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:14,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:14,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:14,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:14,044 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a0a32af-b8cf-48ab-9788-f115a3849913/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:21:14,068 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:14,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:14,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:14,069 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:14,069 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:14,069 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:14,070 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:21:14,070 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:14,070 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:14,070 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:21:14,071 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:21:14,071 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:14,071 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:21:14,071 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:21:14,071 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:21:14,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:14,072 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:14,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:14,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:14,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:14,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:21:14,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:14,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:21:14,074 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:14,074 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:14,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:21:14,074 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:14,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:21:14,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:14,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:14,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:14,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:14,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:14,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:21:14,076 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:21:14,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:21:14,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:21:14,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:14,077 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:14,077 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_1a0a32af-b8cf-48ab-9788-f115a3849913/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a0a32af-b8cf-48ab-9788-f115a3849913/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c4525f606f22d0272ef924821cd05b7d138d7b34 [2021-10-11 02:21:14,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:14,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:14,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:14,350 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:14,358 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:14,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a0a32af-b8cf-48ab-9788-f115a3849913/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c [2021-10-11 02:21:14,420 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a0a32af-b8cf-48ab-9788-f115a3849913/bin/utaipan-WLngWcDbfI/data/65daaaf97/05a47a98656b44328d34638d76565236/FLAGf51857f1c [2021-10-11 02:21:14,948 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:14,949 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a0a32af-b8cf-48ab-9788-f115a3849913/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c [2021-10-11 02:21:14,956 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a0a32af-b8cf-48ab-9788-f115a3849913/bin/utaipan-WLngWcDbfI/data/65daaaf97/05a47a98656b44328d34638d76565236/FLAGf51857f1c [2021-10-11 02:21:15,327 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a0a32af-b8cf-48ab-9788-f115a3849913/bin/utaipan-WLngWcDbfI/data/65daaaf97/05a47a98656b44328d34638d76565236 [2021-10-11 02:21:15,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:15,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:15,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:15,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:15,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:15,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:15" (1/1) ... [2021-10-11 02:21:15,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c0a550f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:15, skipping insertion in model container [2021-10-11 02:21:15,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:15" (1/1) ... [2021-10-11 02:21:15,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:15,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:15,542 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_1a0a32af-b8cf-48ab-9788-f115a3849913/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c[555,568] [2021-10-11 02:21:15,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:15,567 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:15,579 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_1a0a32af-b8cf-48ab-9788-f115a3849913/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c[555,568] [2021-10-11 02:21:15,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:15,598 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:15,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:15 WrapperNode [2021-10-11 02:21:15,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:15,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:15,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:15,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:15,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:15" (1/1) ... [2021-10-11 02:21:15,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:15" (1/1) ... [2021-10-11 02:21:15,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:15,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:15,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:15,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:15,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:15" (1/1) ... [2021-10-11 02:21:15,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:15" (1/1) ... [2021-10-11 02:21:15,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:15" (1/1) ... [2021-10-11 02:21:15,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:15" (1/1) ... [2021-10-11 02:21:15,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:15" (1/1) ... [2021-10-11 02:21:15,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:15" (1/1) ... [2021-10-11 02:21:15,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:15" (1/1) ... [2021-10-11 02:21:15,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:15,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:15,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:15,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:15,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:15" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a0a32af-b8cf-48ab-9788-f115a3849913/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 02:21:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:21:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:15,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:15,992 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:15,992 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-11 02:21:15,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:15 BoogieIcfgContainer [2021-10-11 02:21:15,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:15,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:15,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:16,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:16,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:15" (1/3) ... [2021-10-11 02:21:16,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9127d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:16, skipping insertion in model container [2021-10-11 02:21:16,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:15" (2/3) ... [2021-10-11 02:21:16,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9127d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:16, skipping insertion in model container [2021-10-11 02:21:16,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:15" (3/3) ... [2021-10-11 02:21:16,004 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound20.c [2021-10-11 02:21:16,017 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:16,020 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:21:16,030 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:21:16,053 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:16,053 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:21:16,053 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:16,054 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:16,054 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:16,054 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:16,054 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:16,054 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:16,074 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2021-10-11 02:21:16,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:21:16,078 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:16,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:21:16,079 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:16,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:16,084 INFO L82 PathProgramCache]: Analyzing trace with hash 2974232, now seen corresponding path program 1 times [2021-10-11 02:21:16,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:16,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465996094] [2021-10-11 02:21:16,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:16,212 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:21:16,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428225610] [2021-10-11 02:21:16,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a0a32af-b8cf-48ab-9788-f115a3849913/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 02:21:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:16,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-11 02:21:16,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:16,473 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 02:21:16,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:16,502 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 02:21:16,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465996094] [2021-10-11 02:21:16,503 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:21:16,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428225610] [2021-10-11 02:21:16,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:16,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-11 02:21:16,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333677875] [2021-10-11 02:21:16,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:21:16,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:16,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:21:16,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:16,525 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 6 states. [2021-10-11 02:21:18,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:18,649 INFO L93 Difference]: Finished difference Result 32 states and 45 transitions. [2021-10-11 02:21:18,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:21:18,651 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2021-10-11 02:21:18,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:18,660 INFO L225 Difference]: With dead ends: 32 [2021-10-11 02:21:18,660 INFO L226 Difference]: Without dead ends: 19 [2021-10-11 02:21:18,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:21:18,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-11 02:21:18,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2021-10-11 02:21:18,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:21:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-11 02:21:18,696 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 4 [2021-10-11 02:21:18,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:18,697 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-11 02:21:18,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:21:18,697 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-11 02:21:18,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:21:18,698 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:18,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:18,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-11 02:21:18,914 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:18,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:18,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1584067981, now seen corresponding path program 1 times [2021-10-11 02:21:18,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:18,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122856610] [2021-10-11 02:21:18,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:18,931 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:21:18,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725708670] [2021-10-11 02:21:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a0a32af-b8cf-48ab-9788-f115a3849913/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:18,988 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:19,000 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:19,025 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:21:19,026 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:21:19,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:19,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:19 BoogieIcfgContainer [2021-10-11 02:21:19,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:19,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:19,265 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:19,265 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:19,266 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:15" (3/4) ... [2021-10-11 02:21:19,268 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:21:19,303 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a0a32af-b8cf-48ab-9788-f115a3849913/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:21:19,303 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:19,305 INFO L168 Benchmark]: Toolchain (without parser) took 3961.86 ms. Allocated memory is still 111.1 MB. Free memory was 79.4 MB in the beginning and 54.9 MB in the end (delta: 24.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:19,306 INFO L168 Benchmark]: CDTParser took 0.93 ms. Allocated memory is still 86.0 MB. Free memory is still 46.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:19,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.48 ms. Allocated memory is still 111.1 MB. Free memory was 79.2 MB in the beginning and 87.0 MB in the end (delta: -7.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:19,307 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.36 ms. Allocated memory is still 111.1 MB. Free memory was 87.0 MB in the beginning and 85.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:19,308 INFO L168 Benchmark]: Boogie Preprocessor took 20.13 ms. Allocated memory is still 111.1 MB. Free memory was 85.7 MB in the beginning and 84.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:19,309 INFO L168 Benchmark]: RCFGBuilder took 333.88 ms. Allocated memory is still 111.1 MB. Free memory was 84.4 MB in the beginning and 66.0 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:19,310 INFO L168 Benchmark]: TraceAbstraction took 3267.35 ms. Allocated memory is still 111.1 MB. Free memory was 65.5 MB in the beginning and 57.0 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:19,311 INFO L168 Benchmark]: Witness Printer took 38.74 ms. Allocated memory is still 111.1 MB. Free memory was 57.0 MB in the beginning and 54.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:19,315 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.93 ms. Allocated memory is still 86.0 MB. Free memory is still 46.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 254.48 ms. Allocated memory is still 111.1 MB. Free memory was 79.2 MB in the beginning and 87.0 MB in the end (delta: -7.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.36 ms. Allocated memory is still 111.1 MB. Free memory was 87.0 MB in the beginning and 85.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.13 ms. Allocated memory is still 111.1 MB. Free memory was 85.7 MB in the beginning and 84.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 333.88 ms. Allocated memory is still 111.1 MB. Free memory was 84.4 MB in the beginning and 66.0 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3267.35 ms. Allocated memory is still 111.1 MB. Free memory was 65.5 MB in the beginning and 57.0 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * Witness Printer took 38.74 ms. Allocated memory is still 111.1 MB. Free memory was 57.0 MB in the beginning and 54.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] unsigned int z, k; [L24] long long x, y, c; [L25] z = __VERIFIER_nondet_uint() [L13] COND FALSE !(!cond) [L27] k = __VERIFIER_nondet_uint() [L13] COND FALSE !(!cond) [L30] x = 1 [L31] y = z [L32] c = 1 [L34] COND TRUE 1 [L16] COND FALSE !(!(cond)) [L37] COND TRUE !(c < k) [L46] x = x * (z - 1) [L16] COND TRUE !(cond) [L18] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 16 SDslu, 21 SDs, 0 SdLazy, 18 SolverSat, 9 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=1, 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 87 SizeOfPredicates, 7 NumberOfNonLiveVariables, 50 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 incorrect! Received shutdown request...