./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.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-vcloud-master/worker/run_dir_3e7e90f1-8f51-4d35-bf30-3419fcbde19b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3e7e90f1-8f51-4d35-bf30-3419fcbde19b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3e7e90f1-8f51-4d35-bf30-3419fcbde19b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3e7e90f1-8f51-4d35-bf30-3419fcbde19b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3e7e90f1-8f51-4d35-bf30-3419fcbde19b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3e7e90f1-8f51-4d35-bf30-3419fcbde19b/bin/utaipan --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 4dc383db2a89e53bad8cae6a138d4c7c7f853888 ................................................................................................................................................................................................................................................................................................................ 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 [2020-12-09 20:14:04,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 20:14:04,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 20:14:04,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 20:14:04,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 20:14:04,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 20:14:04,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 20:14:04,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 20:14:04,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 20:14:04,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 20:14:04,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 20:14:04,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 20:14:04,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 20:14:04,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 20:14:04,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 20:14:04,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 20:14:04,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 20:14:04,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 20:14:04,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 20:14:04,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 20:14:04,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 20:14:04,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 20:14:04,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 20:14:04,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 20:14:04,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 20:14:04,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 20:14:04,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 20:14:04,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 20:14:04,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 20:14:04,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 20:14:04,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 20:14:04,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 20:14:04,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 20:14:04,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 20:14:04,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 20:14:04,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 20:14:04,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 20:14:04,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 20:14:04,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 20:14:04,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 20:14:04,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 20:14:04,851 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3e7e90f1-8f51-4d35-bf30-3419fcbde19b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 20:14:04,868 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 20:14:04,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 20:14:04,868 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 20:14:04,869 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 20:14:04,869 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 20:14:04,869 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 20:14:04,869 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 20:14:04,869 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 20:14:04,869 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 20:14:04,869 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 20:14:04,869 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 20:14:04,870 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 20:14:04,870 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 20:14:04,870 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 20:14:04,870 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 20:14:04,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 20:14:04,871 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 20:14:04,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 20:14:04,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 20:14:04,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 20:14:04,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 20:14:04,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 20:14:04,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 20:14:04,871 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 20:14:04,872 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 20:14:04,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 20:14:04,872 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 20:14:04,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 20:14:04,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 20:14:04,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 20:14:04,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:14:04,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 20:14:04,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 20:14:04,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 20:14:04,873 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 20:14:04,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 20:14:04,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 20:14:04,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 20:14:04,873 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 20:14:04,873 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-vcloud-master/worker/run_dir_3e7e90f1-8f51-4d35-bf30-3419fcbde19b/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3e7e90f1-8f51-4d35-bf30-3419fcbde19b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4dc383db2a89e53bad8cae6a138d4c7c7f853888 [2020-12-09 20:14:05,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 20:14:05,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 20:14:05,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 20:14:05,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 20:14:05,079 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 20:14:05,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3e7e90f1-8f51-4d35-bf30-3419fcbde19b/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c [2020-12-09 20:14:05,121 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3e7e90f1-8f51-4d35-bf30-3419fcbde19b/bin/utaipan/data/afd996629/66f2853e277941fcb06a65d7dddfe866/FLAG7a0562cfd [2020-12-09 20:14:05,498 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 20:14:05,498 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3e7e90f1-8f51-4d35-bf30-3419fcbde19b/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c [2020-12-09 20:14:05,503 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3e7e90f1-8f51-4d35-bf30-3419fcbde19b/bin/utaipan/data/afd996629/66f2853e277941fcb06a65d7dddfe866/FLAG7a0562cfd [2020-12-09 20:14:05,930 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3e7e90f1-8f51-4d35-bf30-3419fcbde19b/bin/utaipan/data/afd996629/66f2853e277941fcb06a65d7dddfe866 [2020-12-09 20:14:05,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 20:14:05,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 20:14:05,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 20:14:05,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 20:14:05,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 20:14:05,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:14:05" (1/1) ... [2020-12-09 20:14:05,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@681ab2af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:05, skipping insertion in model container [2020-12-09 20:14:05,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:14:05" (1/1) ... [2020-12-09 20:14:05,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 20:14:05,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 20:14:06,052 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_3e7e90f1-8f51-4d35-bf30-3419fcbde19b/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c[555,568] [2020-12-09 20:14:06,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:14:06,067 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 20:14:06,075 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_3e7e90f1-8f51-4d35-bf30-3419fcbde19b/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c[555,568] [2020-12-09 20:14:06,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:14:06,088 INFO L208 MainTranslator]: Completed translation [2020-12-09 20:14:06,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:06 WrapperNode [2020-12-09 20:14:06,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 20:14:06,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 20:14:06,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 20:14:06,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 20:14:06,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:06" (1/1) ... [2020-12-09 20:14:06,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:06" (1/1) ... [2020-12-09 20:14:06,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 20:14:06,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 20:14:06,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 20:14:06,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 20:14:06,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:06" (1/1) ... [2020-12-09 20:14:06,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:06" (1/1) ... [2020-12-09 20:14:06,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:06" (1/1) ... [2020-12-09 20:14:06,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:06" (1/1) ... [2020-12-09 20:14:06,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:06" (1/1) ... [2020-12-09 20:14:06,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:06" (1/1) ... [2020-12-09 20:14:06,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:06" (1/1) ... [2020-12-09 20:14:06,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 20:14:06,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 20:14:06,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 20:14:06,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 20:14:06,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e7e90f1-8f51-4d35-bf30-3419fcbde19b/bin/utaipan/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 [2020-12-09 20:14:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 20:14:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 20:14:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 20:14:06,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 20:14:06,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 20:14:06,406 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-09 20:14:06,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:14:06 BoogieIcfgContainer [2020-12-09 20:14:06,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 20:14:06,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 20:14:06,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 20:14:06,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 20:14:06,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:14:05" (1/3) ... [2020-12-09 20:14:06,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741bb20f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:14:06, skipping insertion in model container [2020-12-09 20:14:06,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:06" (2/3) ... [2020-12-09 20:14:06,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741bb20f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:14:06, skipping insertion in model container [2020-12-09 20:14:06,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:14:06" (3/3) ... [2020-12-09 20:14:06,416 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound5.c [2020-12-09 20:14:06,429 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 20:14:06,432 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 20:14:06,442 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 20:14:06,464 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 20:14:06,465 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 20:14:06,465 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 20:14:06,465 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 20:14:06,465 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 20:14:06,465 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 20:14:06,465 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 20:14:06,465 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 20:14:06,477 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-12-09 20:14:06,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 20:14:06,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:14:06,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 20:14:06,483 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:14:06,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:14:06,488 INFO L82 PathProgramCache]: Analyzing trace with hash 2974232, now seen corresponding path program 1 times [2020-12-09 20:14:06,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:14:06,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131997537] [2020-12-09 20:14:06,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:14:06,583 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 20:14:06,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490937128] [2020-12-09 20:14:06,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e7e90f1-8f51-4d35-bf30-3419fcbde19b/bin/utaipan/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 [2020-12-09 20:14:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:14:06,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 20:14:06,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:14:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:14:06,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:14:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:14:06,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131997537] [2020-12-09 20:14:06,719 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 20:14:06,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490937128] [2020-12-09 20:14:06,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:14:06,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 20:14:06,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474867483] [2020-12-09 20:14:06,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 20:14:06,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:14:06,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 20:14:06,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 20:14:06,734 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 6 states. [2020-12-09 20:14:06,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:14:06,796 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2020-12-09 20:14:06,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 20:14:06,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2020-12-09 20:14:06,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:14:06,803 INFO L225 Difference]: With dead ends: 25 [2020-12-09 20:14:06,803 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 20:14:06,805 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 [2020-12-09 20:14:06,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 20:14:06,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 8. [2020-12-09 20:14:06,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-09 20:14:06,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-12-09 20:14:06,831 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2020-12-09 20:14:06,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:14:06,831 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-12-09 20:14:06,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 20:14:06,831 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-12-09 20:14:06,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 20:14:06,832 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:14:06,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:14:07,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-09 20:14:07,034 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:14:07,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:14:07,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1584067981, now seen corresponding path program 1 times [2020-12-09 20:14:07,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:14:07,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907780176] [2020-12-09 20:14:07,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:14:07,095 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 20:14:07,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040905888] [2020-12-09 20:14:07,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e7e90f1-8f51-4d35-bf30-3419fcbde19b/bin/utaipan/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 [2020-12-09 20:14:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 20:14:07,185 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 20:14:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 20:14:07,195 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 20:14:07,215 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 20:14:07,215 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 20:14:07,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:14:07,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:14:07 BoogieIcfgContainer [2020-12-09 20:14:07,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 20:14:07,474 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 20:14:07,474 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 20:14:07,474 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 20:14:07,475 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:14:06" (3/4) ... [2020-12-09 20:14:07,480 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 20:14:07,554 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3e7e90f1-8f51-4d35-bf30-3419fcbde19b/bin/utaipan/witness.graphml [2020-12-09 20:14:07,554 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 20:14:07,555 INFO L168 Benchmark]: Toolchain (without parser) took 1619.72 ms. Allocated memory is still 90.2 MB. Free memory was 49.9 MB in the beginning and 45.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-12-09 20:14:07,556 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 90.2 MB. Free memory was 65.8 MB in the beginning and 65.7 MB in the end (delta: 115.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:14:07,557 INFO L168 Benchmark]: CACSL2BoogieTranslator took 151.46 ms. Allocated memory is still 90.2 MB. Free memory was 49.7 MB in the beginning and 62.3 MB in the end (delta: -12.6 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-12-09 20:14:07,557 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.81 ms. Allocated memory is still 90.2 MB. Free memory was 62.0 MB in the beginning and 60.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:14:07,558 INFO L168 Benchmark]: Boogie Preprocessor took 14.76 ms. Allocated memory is still 90.2 MB. Free memory was 60.6 MB in the beginning and 59.6 MB in the end (delta: 945.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:14:07,558 INFO L168 Benchmark]: RCFGBuilder took 280.88 ms. Allocated memory is still 90.2 MB. Free memory was 59.6 MB in the beginning and 57.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 20:14:07,559 INFO L168 Benchmark]: TraceAbstraction took 1062.73 ms. Allocated memory is still 90.2 MB. Free memory was 57.1 MB in the beginning and 47.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-12-09 20:14:07,559 INFO L168 Benchmark]: Witness Printer took 80.35 ms. Allocated memory is still 90.2 MB. Free memory was 47.3 MB in the beginning and 45.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:14:07,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 90.2 MB. Free memory was 65.8 MB in the beginning and 65.7 MB in the end (delta: 115.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 151.46 ms. Allocated memory is still 90.2 MB. Free memory was 49.7 MB in the beginning and 62.3 MB in the end (delta: -12.6 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.81 ms. Allocated memory is still 90.2 MB. Free memory was 62.0 MB in the beginning and 60.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.76 ms. Allocated memory is still 90.2 MB. Free memory was 60.6 MB in the beginning and 59.6 MB in the end (delta: 945.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 280.88 ms. Allocated memory is still 90.2 MB. Free memory was 59.6 MB in the beginning and 57.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1062.73 ms. Allocated memory is still 90.2 MB. Free memory was 57.1 MB in the beginning and 47.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * Witness Printer took 80.35 ms. Allocated memory is still 90.2 MB. Free memory was 47.3 MB in the beginning and 45.2 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: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 14 SDslu, 12 SDs, 0 SdLazy, 13 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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=12occurred 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s 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...