./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_square_int.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square_int.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF --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 9d6111f1172e07b7206075be423d21f33b529e79943d78b2db976fd996371e2d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:43:13,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:43:13,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:43:13,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:43:13,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:43:13,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:43:13,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:43:13,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:43:13,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:43:13,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:43:13,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:43:13,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:43:13,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:43:13,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:43:13,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:43:13,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:43:13,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:43:13,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:43:13,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:43:13,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:43:13,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:43:13,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:43:13,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:43:13,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:43:13,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:43:13,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:43:13,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:43:13,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:43:13,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:43:13,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:43:13,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:43:13,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:43:13,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:43:13,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:43:13,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:43:13,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:43:13,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:43:13,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:43:13,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:43:13,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:43:13,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:43:13,903 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 01:43:13,942 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:43:13,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:43:13,944 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:43:13,944 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:43:13,945 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:43:13,945 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:43:13,945 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:43:13,945 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:43:13,945 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:43:13,946 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:43:13,947 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:43:13,947 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:43:13,947 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:43:13,947 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:43:13,948 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:43:13,948 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:43:13,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:43:13,949 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:43:13,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:43:13,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:43:13,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:43:13,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:43:13,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:43:13,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:43:13,950 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:43:13,950 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:43:13,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:43:13,951 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:43:13,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:43:13,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:43:13,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:43:13,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:43:13,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:43:13,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:43:13,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:43:13,954 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:43:13,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:43:13,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:43:13,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:43:13,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:43:13,955 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_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d6111f1172e07b7206075be423d21f33b529e79943d78b2db976fd996371e2d [2021-11-13 01:43:14,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:43:14,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:43:14,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:43:14,253 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:43:14,254 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:43:14,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-benchs/inv_square_int.c [2021-11-13 01:43:14,334 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/data/bf5885ec4/c422d81c40744417b61259252d4a28c1/FLAGd47ee25e6 [2021-11-13 01:43:14,750 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:43:14,751 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/sv-benchmarks/c/float-benchs/inv_square_int.c [2021-11-13 01:43:14,758 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/data/bf5885ec4/c422d81c40744417b61259252d4a28c1/FLAGd47ee25e6 [2021-11-13 01:43:15,168 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/data/bf5885ec4/c422d81c40744417b61259252d4a28c1 [2021-11-13 01:43:15,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:43:15,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:43:15,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:43:15,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:43:15,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:43:15,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69e0332d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15, skipping insertion in model container [2021-11-13 01:43:15,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:43:15,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:43:15,434 WARN L228 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_d8e88142-7c81-441a-8880-e733ba45da86/sv-benchmarks/c/float-benchs/inv_square_int.c[482,495] [2021-11-13 01:43:15,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:43:15,462 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:43:15,477 WARN L228 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_d8e88142-7c81-441a-8880-e733ba45da86/sv-benchmarks/c/float-benchs/inv_square_int.c[482,495] [2021-11-13 01:43:15,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:43:15,495 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:43:15,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15 WrapperNode [2021-11-13 01:43:15,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:43:15,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:43:15,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:43:15,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:43:15,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:43:15,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:43:15,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:43:15,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:43:15,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:43:15,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:43:15,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:43:15,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:43:15,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:43:15,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:43:15,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:43:15,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:43:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 01:43:15,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:43:15,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:43:15,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:43:15,887 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:43:15,888 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 01:43:15,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:43:15 BoogieIcfgContainer [2021-11-13 01:43:15,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:43:15,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:43:15,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:43:15,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:43:15,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:43:15" (1/3) ... [2021-11-13 01:43:15,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cf839e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:43:15, skipping insertion in model container [2021-11-13 01:43:15,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (2/3) ... [2021-11-13 01:43:15,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cf839e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:43:15, skipping insertion in model container [2021-11-13 01:43:15,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:43:15" (3/3) ... [2021-11-13 01:43:15,904 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square_int.c [2021-11-13 01:43:15,908 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:43:15,909 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:43:15,959 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:43:15,967 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 01:43:15,967 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:43:15,986 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:15,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-13 01:43:15,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:15,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-13 01:43:16,000 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:43:16,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:16,006 INFO L85 PathProgramCache]: Analyzing trace with hash 58046, now seen corresponding path program 1 times [2021-11-13 01:43:16,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:16,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494937577] [2021-11-13 01:43:16,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:16,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 01:43:16,179 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 01:43:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 01:43:16,247 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-13 01:43:16,250 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 01:43:16,252 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 01:43:16,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 01:43:16,260 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-13 01:43:16,264 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 01:43:16,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:43:16 BoogieIcfgContainer [2021-11-13 01:43:16,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 01:43:16,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 01:43:16,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 01:43:16,294 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 01:43:16,295 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:43:15" (3/4) ... [2021-11-13 01:43:16,298 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-13 01:43:16,299 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 01:43:16,300 INFO L158 Benchmark]: Toolchain (without parser) took 1118.51ms. Allocated memory is still 94.4MB. Free memory was 54.1MB in the beginning and 43.8MB in the end (delta: 10.2MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2021-11-13 01:43:16,301 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 94.4MB. Free memory is still 70.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:43:16,302 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.22ms. Allocated memory is still 94.4MB. Free memory was 53.9MB in the beginning and 70.3MB in the end (delta: -16.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-13 01:43:16,304 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.26ms. Allocated memory is still 94.4MB. Free memory was 70.3MB in the beginning and 69.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 01:43:16,304 INFO L158 Benchmark]: Boogie Preprocessor took 25.91ms. Allocated memory is still 94.4MB. Free memory was 69.0MB in the beginning and 67.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:43:16,310 INFO L158 Benchmark]: RCFGBuilder took 322.36ms. Allocated memory is still 94.4MB. Free memory was 67.9MB in the beginning and 57.7MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 01:43:16,312 INFO L158 Benchmark]: TraceAbstraction took 398.24ms. Allocated memory is still 94.4MB. Free memory was 57.4MB in the beginning and 44.1MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-13 01:43:16,313 INFO L158 Benchmark]: Witness Printer took 5.39ms. Allocated memory is still 94.4MB. Free memory was 44.1MB in the beginning and 43.8MB in the end (delta: 265.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:43:16,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 94.4MB. Free memory is still 70.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 310.22ms. Allocated memory is still 94.4MB. Free memory was 53.9MB in the beginning and 70.3MB in the end (delta: -16.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.26ms. Allocated memory is still 94.4MB. Free memory was 70.3MB in the beginning and 69.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.91ms. Allocated memory is still 94.4MB. Free memory was 69.0MB in the beginning and 67.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 322.36ms. Allocated memory is still 94.4MB. Free memory was 67.9MB in the beginning and 57.7MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 398.24ms. Allocated memory is still 94.4MB. Free memory was 57.4MB in the beginning and 44.1MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 5.39ms. Allocated memory is still 94.4MB. Free memory was 44.1MB in the beginning and 43.8MB in the end (delta: 265.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 24, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L17] int x; [L18] float y, z; [L20] x = __VERIFIER_nondet_int() [L21] CALL assume_abort_if_not(x >= -10 && x <= 10) [L11] COND FALSE !(!cond) [L21] RET assume_abort_if_not(x >= -10 && x <= 10) [L23] y = x*x - 2.f [L24] CALL __VERIFIER_assert(y != 0.f) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-13 01:43:16,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square_int.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF --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 9d6111f1172e07b7206075be423d21f33b529e79943d78b2db976fd996371e2d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:43:18,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:43:18,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:43:18,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:43:18,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:43:18,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:43:18,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:43:18,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:43:18,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:43:18,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:43:18,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:43:18,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:43:18,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:43:18,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:43:18,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:43:18,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:43:18,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:43:18,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:43:18,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:43:18,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:43:18,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:43:18,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:43:18,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:43:18,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:43:18,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:43:18,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:43:18,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:43:18,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:43:18,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:43:18,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:43:18,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:43:18,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:43:18,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:43:18,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:43:18,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:43:18,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:43:18,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:43:18,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:43:18,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:43:18,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:43:18,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:43:18,938 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-13 01:43:18,981 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:43:18,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:43:18,983 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:43:18,983 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:43:18,983 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:43:18,983 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:43:18,984 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:43:18,984 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:43:18,984 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:43:18,984 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:43:18,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:43:18,987 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:43:18,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:43:18,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:43:18,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:43:18,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:43:18,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:43:18,989 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:43:18,989 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:43:18,989 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:43:18,989 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:43:18,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:43:18,990 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:43:18,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:43:18,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:43:18,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:43:18,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:43:18,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:43:18,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:43:18,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:43:18,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:43:18,992 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:43:18,992 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:43:18,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:43:18,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:43:18,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:43:18,993 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d6111f1172e07b7206075be423d21f33b529e79943d78b2db976fd996371e2d [2021-11-13 01:43:19,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:43:19,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:43:19,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:43:19,398 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:43:19,399 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:43:19,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-benchs/inv_square_int.c [2021-11-13 01:43:19,485 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/data/13d7898ff/f5a479dc1cc2421fac566334a17cfe8d/FLAGcbfef3e48 [2021-11-13 01:43:19,946 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:43:19,947 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/sv-benchmarks/c/float-benchs/inv_square_int.c [2021-11-13 01:43:19,954 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/data/13d7898ff/f5a479dc1cc2421fac566334a17cfe8d/FLAGcbfef3e48 [2021-11-13 01:43:20,345 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/data/13d7898ff/f5a479dc1cc2421fac566334a17cfe8d [2021-11-13 01:43:20,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:43:20,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:43:20,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:43:20,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:43:20,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:43:20,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:43:20" (1/1) ... [2021-11-13 01:43:20,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f49404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:20, skipping insertion in model container [2021-11-13 01:43:20,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:43:20" (1/1) ... [2021-11-13 01:43:20,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:43:20,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:43:20,585 WARN L228 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_d8e88142-7c81-441a-8880-e733ba45da86/sv-benchmarks/c/float-benchs/inv_square_int.c[482,495] [2021-11-13 01:43:20,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:43:20,624 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:43:20,651 WARN L228 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_d8e88142-7c81-441a-8880-e733ba45da86/sv-benchmarks/c/float-benchs/inv_square_int.c[482,495] [2021-11-13 01:43:20,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:43:20,685 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:43:20,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:20 WrapperNode [2021-11-13 01:43:20,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:43:20,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:43:20,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:43:20,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:43:20,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:20" (1/1) ... [2021-11-13 01:43:20,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:20" (1/1) ... [2021-11-13 01:43:20,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:43:20,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:43:20,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:43:20,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:43:20,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:20" (1/1) ... [2021-11-13 01:43:20,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:20" (1/1) ... [2021-11-13 01:43:20,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:20" (1/1) ... [2021-11-13 01:43:20,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:20" (1/1) ... [2021-11-13 01:43:20,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:20" (1/1) ... [2021-11-13 01:43:20,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:20" (1/1) ... [2021-11-13 01:43:20,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:20" (1/1) ... [2021-11-13 01:43:20,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:43:20,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:43:20,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:43:20,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:43:20,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:20" (1/1) ... [2021-11-13 01:43:20,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:43:20,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:43:20,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:43:20,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:43:20,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:43:20,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:43:20,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:43:20,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:43:22,304 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:43:22,306 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 01:43:22,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:43:22 BoogieIcfgContainer [2021-11-13 01:43:22,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:43:22,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:43:22,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:43:22,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:43:22,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:43:20" (1/3) ... [2021-11-13 01:43:22,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c89e564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:43:22, skipping insertion in model container [2021-11-13 01:43:22,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:20" (2/3) ... [2021-11-13 01:43:22,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c89e564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:43:22, skipping insertion in model container [2021-11-13 01:43:22,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:43:22" (3/3) ... [2021-11-13 01:43:22,317 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square_int.c [2021-11-13 01:43:22,322 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:43:22,323 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:43:22,372 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:43:22,379 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 01:43:22,380 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:43:22,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:22,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-13 01:43:22,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:22,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-13 01:43:22,400 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:43:22,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:22,406 INFO L85 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2021-11-13 01:43:22,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:43:22,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6616324] [2021-11-13 01:43:22,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:22,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:43:22,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:43:22,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:43:22,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:43:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:22,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 01:43:22,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:22,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:22,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:22,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:22,697 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:43:22,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6616324] [2021-11-13 01:43:22,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6616324] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:22,699 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:22,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 01:43:22,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106379233] [2021-11-13 01:43:22,701 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:22,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 01:43:22,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:43:22,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 01:43:22,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:43:22,757 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:22,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:22,770 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-13 01:43:22,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 01:43:22,773 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-13 01:43:22,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:22,781 INFO L225 Difference]: With dead ends: 19 [2021-11-13 01:43:22,781 INFO L226 Difference]: Without dead ends: 7 [2021-11-13 01:43:22,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:43:22,791 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.35ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:22,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.35ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 01:43:22,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-13 01:43:22,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-13 01:43:22,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:22,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-11-13 01:43:22,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-11-13 01:43:22,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:22,826 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-11-13 01:43:22,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:22,826 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-11-13 01:43:22,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-13 01:43:22,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:22,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-13 01:43:22,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:43:23,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:43:23,051 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:43:23,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:23,052 INFO L85 PathProgramCache]: Analyzing trace with hash 889568295, now seen corresponding path program 1 times [2021-11-13 01:43:23,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:43:23,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622056934] [2021-11-13 01:43:23,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:23,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:43:23,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:43:23,061 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:43:23,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:43:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:23,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:43:23,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:28,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:28,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:34,237 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (not (fp.eq (fp.sub c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (bvmul |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) ((_ to_fp 8 24) c_currentRoundingMode 2.0)) (_ +zero 8 24)))) is different from true [2021-11-13 01:43:39,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:39,500 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:43:39,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622056934] [2021-11-13 01:43:39,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622056934] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:39,501 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:39,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2021-11-13 01:43:39,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415232023] [2021-11-13 01:43:39,501 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:39,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:43:39,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:43:39,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:43:39,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2021-11-13 01:43:39,503 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:50,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:50,963 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-11-13 01:43:50,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:43:50,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-13 01:43:50,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:50,964 INFO L225 Difference]: With dead ends: 7 [2021-11-13 01:43:50,964 INFO L226 Difference]: Without dead ends: 0 [2021-11-13 01:43:50,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=19, Invalid=25, Unknown=2, NotChecked=10, Total=56 [2021-11-13 01:43:50,966 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 297.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 297.64ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:50,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 3 Unknown, 0 Unchecked, 0.31ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 2 Unchecked, 297.64ms Time] [2021-11-13 01:43:50,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-13 01:43:50,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-13 01:43:50,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:50,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-13 01:43:50,969 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-11-13 01:43:50,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:50,969 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 01:43:50,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:50,970 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-13 01:43:50,970 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-13 01:43:50,972 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 01:43:51,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-13 01:43:51,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:43:51,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-13 01:43:51,180 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-13 01:43:51,181 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-13 01:43:51,181 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-13 01:43:51,181 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-13 01:43:51,181 INFO L861 garLoopResultBuilder]: At program point L26(lines 15 27) the Hoare annotation is: true [2021-11-13 01:43:51,182 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-11-13 01:43:51,182 INFO L858 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-11-13 01:43:51,182 INFO L858 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-11-13 01:43:51,182 INFO L858 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-11-13 01:43:51,182 INFO L858 garLoopResultBuilder]: For program point L10(lines 10 12) no Hoare annotation was computed. [2021-11-13 01:43:51,183 INFO L861 garLoopResultBuilder]: At program point L13-3(line 13) the Hoare annotation is: true [2021-11-13 01:43:51,186 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-13 01:43:51,188 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 01:43:51,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:43:51 BoogieIcfgContainer [2021-11-13 01:43:51,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 01:43:51,196 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 01:43:51,196 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 01:43:51,196 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 01:43:51,197 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:43:22" (3/4) ... [2021-11-13 01:43:51,200 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-13 01:43:51,210 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-13 01:43:51,211 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-13 01:43:51,211 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-13 01:43:51,211 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 01:43:51,243 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-13 01:43:51,243 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 01:43:51,244 INFO L158 Benchmark]: Toolchain (without parser) took 30895.52ms. Allocated memory is still 75.5MB. Free memory was 53.6MB in the beginning and 34.8MB in the end (delta: 18.8MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2021-11-13 01:43:51,244 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 50.3MB. Free memory was 29.9MB in the beginning and 29.9MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:43:51,245 INFO L158 Benchmark]: CACSL2BoogieTranslator took 336.40ms. Allocated memory is still 75.5MB. Free memory was 53.4MB in the beginning and 59.2MB in the end (delta: -5.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-13 01:43:51,245 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.51ms. Allocated memory is still 75.5MB. Free memory was 59.2MB in the beginning and 57.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:43:51,246 INFO L158 Benchmark]: Boogie Preprocessor took 50.84ms. Allocated memory is still 75.5MB. Free memory was 57.6MB in the beginning and 56.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:43:51,246 INFO L158 Benchmark]: RCFGBuilder took 1528.35ms. Allocated memory is still 75.5MB. Free memory was 56.5MB in the beginning and 47.4MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 01:43:51,247 INFO L158 Benchmark]: TraceAbstraction took 28885.16ms. Allocated memory is still 75.5MB. Free memory was 46.9MB in the beginning and 37.3MB in the end (delta: 9.7MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2021-11-13 01:43:51,247 INFO L158 Benchmark]: Witness Printer took 47.42ms. Allocated memory is still 75.5MB. Free memory was 37.3MB in the beginning and 34.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 01:43:51,250 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 50.3MB. Free memory was 29.9MB in the beginning and 29.9MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 336.40ms. Allocated memory is still 75.5MB. Free memory was 53.4MB in the beginning and 59.2MB in the end (delta: -5.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.51ms. Allocated memory is still 75.5MB. Free memory was 59.2MB in the beginning and 57.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 50.84ms. Allocated memory is still 75.5MB. Free memory was 57.6MB in the beginning and 56.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1528.35ms. Allocated memory is still 75.5MB. Free memory was 56.5MB in the beginning and 47.4MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 28885.16ms. Allocated memory is still 75.5MB. Free memory was 46.9MB in the beginning and 37.3MB in the end (delta: 9.7MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * Witness Printer took 47.42ms. Allocated memory is still 75.5MB. Free memory was 37.3MB in the beginning and 34.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 28.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 11.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 297.64ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 297.46ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 1 mSolverCounterSat, 0.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 16.4s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 2 QuantifiedInterpolants, 57 SizeOfPredicates, 5 NumberOfNonLiveVariables, 60 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-13 01:43:51,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e88142-7c81-441a-8880-e733ba45da86/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE