./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7 --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 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:13:12,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:13:12,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:13:13,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:13:13,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:13:13,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:13:13,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:13:13,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:13:13,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:13:13,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:13:13,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:13:13,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:13:13,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:13:13,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:13:13,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:13:13,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:13:13,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:13:13,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:13:13,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:13:13,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:13:13,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:13:13,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:13:13,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:13:13,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:13:13,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:13:13,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:13:13,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:13:13,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:13:13,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:13:13,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:13:13,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:13:13,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:13:13,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:13:13,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:13:13,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:13:13,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:13:13,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:13:13,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:13:13,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:13:13,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:13:13,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:13:13,142 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:13:13,189 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:13:13,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:13:13,190 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:13:13,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:13:13,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:13:13,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:13:13,192 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:13:13,193 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:13:13,193 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:13:13,193 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:13:13,194 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:13:13,194 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:13:13,195 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:13:13,195 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:13:13,195 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:13:13,195 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:13:13,196 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:13:13,196 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:13:13,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:13:13,197 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:13:13,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:13:13,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:13:13,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:13:13,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:13:13,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:13:13,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:13:13,200 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:13:13,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:13:13,200 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:13:13,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:13:13,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:13:13,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:13:13,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:13:13,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:13:13,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:13:13,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:13:13,202 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:13:13,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:13:13,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:13:13,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:13:13,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:13:13,204 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_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec [2021-11-25 18:13:13,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:13:13,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:13:13,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:13:13,471 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:13:13,472 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:13:13,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2021-11-25 18:13:13,543 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/data/e09e5e68d/2d1db64fe3e24900887ab7167d0642f2/FLAGbc1f0af1c [2021-11-25 18:13:14,057 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:13:14,057 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2021-11-25 18:13:14,071 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/data/e09e5e68d/2d1db64fe3e24900887ab7167d0642f2/FLAGbc1f0af1c [2021-11-25 18:13:14,576 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/data/e09e5e68d/2d1db64fe3e24900887ab7167d0642f2 [2021-11-25 18:13:14,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:13:14,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:13:14,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:13:14,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:13:14,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:13:14,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:13:14" (1/1) ... [2021-11-25 18:13:14,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7060b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:14, skipping insertion in model container [2021-11-25 18:13:14,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:13:14" (1/1) ... [2021-11-25 18:13:14,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:13:14,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:13:14,843 WARN L230 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_463e304c-67bf-4842-b9cd-5ed38ad9227d/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[1996,2009] [2021-11-25 18:13:14,848 WARN L230 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_463e304c-67bf-4842-b9cd-5ed38ad9227d/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[2390,2403] [2021-11-25 18:13:14,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:13:14,891 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:13:14,905 WARN L230 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_463e304c-67bf-4842-b9cd-5ed38ad9227d/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[1996,2009] [2021-11-25 18:13:14,906 WARN L230 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_463e304c-67bf-4842-b9cd-5ed38ad9227d/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[2390,2403] [2021-11-25 18:13:14,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:13:14,949 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:13:14,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:14 WrapperNode [2021-11-25 18:13:14,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:13:14,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:13:14,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:13:14,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:13:14,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:14" (1/1) ... [2021-11-25 18:13:14,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:14" (1/1) ... [2021-11-25 18:13:15,004 INFO L137 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2021-11-25 18:13:15,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:13:15,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:13:15,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:13:15,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:13:15,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:14" (1/1) ... [2021-11-25 18:13:15,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:14" (1/1) ... [2021-11-25 18:13:15,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:14" (1/1) ... [2021-11-25 18:13:15,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:14" (1/1) ... [2021-11-25 18:13:15,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:14" (1/1) ... [2021-11-25 18:13:15,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:14" (1/1) ... [2021-11-25 18:13:15,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:14" (1/1) ... [2021-11-25 18:13:15,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:13:15,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:13:15,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:13:15,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:13:15,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:14" (1/1) ... [2021-11-25 18:13:15,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:13:15,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:13:15,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:13:15,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:13:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:13:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-25 18:13:15,138 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-25 18:13:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-11-25 18:13:15,138 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-11-25 18:13:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:13:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:13:15,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:13:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 18:13:15,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 18:13:15,197 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:13:15,198 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:13:15,402 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:13:15,478 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:13:15,478 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 18:13:15,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:13:15 BoogieIcfgContainer [2021-11-25 18:13:15,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:13:15,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:13:15,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:13:15,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:13:15,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:13:14" (1/3) ... [2021-11-25 18:13:15,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25562cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:13:15, skipping insertion in model container [2021-11-25 18:13:15,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:14" (2/3) ... [2021-11-25 18:13:15,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25562cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:13:15, skipping insertion in model container [2021-11-25 18:13:15,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:13:15" (3/3) ... [2021-11-25 18:13:15,489 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_4-2a.c.cil.c [2021-11-25 18:13:15,494 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:13:15,494 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 18:13:15,543 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:13:15,550 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 [2021-11-25 18:13:15,550 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 18:13:15,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 37 states have internal predecessors, (52), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 18:13:15,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 18:13:15,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:13:15,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 18:13:15,575 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:13:15,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:13:15,580 INFO L85 PathProgramCache]: Analyzing trace with hash 6807338, now seen corresponding path program 1 times [2021-11-25 18:13:15,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:13:15,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593522269] [2021-11-25 18:13:15,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:13:15,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:13:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:13:15,684 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 18:13:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:13:15,715 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 18:13:15,717 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 18:13:15,718 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 18:13:15,719 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 18:13:15,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:13:15,724 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-25 18:13:15,727 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:13:15,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:13:15 BoogieIcfgContainer [2021-11-25 18:13:15,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:13:15,746 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:13:15,746 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:13:15,746 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:13:15,747 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:13:15" (3/4) ... [2021-11-25 18:13:15,749 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 18:13:15,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:13:15,751 INFO L158 Benchmark]: Toolchain (without parser) took 1152.11ms. Allocated memory was 121.6MB in the beginning and 159.4MB in the end (delta: 37.7MB). Free memory was 92.5MB in the beginning and 95.7MB in the end (delta: -3.3MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2021-11-25 18:13:15,751 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 121.6MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:13:15,752 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.06ms. Allocated memory was 121.6MB in the beginning and 159.4MB in the end (delta: 37.7MB). Free memory was 92.3MB in the beginning and 129.1MB in the end (delta: -36.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 18:13:15,753 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.22ms. Allocated memory is still 159.4MB. Free memory was 129.1MB in the beginning and 127.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:13:15,754 INFO L158 Benchmark]: Boogie Preprocessor took 34.58ms. Allocated memory is still 159.4MB. Free memory was 127.3MB in the beginning and 126.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:13:15,755 INFO L158 Benchmark]: RCFGBuilder took 438.70ms. Allocated memory is still 159.4MB. Free memory was 125.7MB in the beginning and 110.5MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-25 18:13:15,755 INFO L158 Benchmark]: TraceAbstraction took 262.61ms. Allocated memory is still 159.4MB. Free memory was 109.9MB in the beginning and 96.0MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-25 18:13:15,756 INFO L158 Benchmark]: Witness Printer took 3.94ms. Allocated memory is still 159.4MB. Free memory was 96.0MB in the beginning and 95.7MB in the end (delta: 297.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:13:15,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 121.6MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 349.06ms. Allocated memory was 121.6MB in the beginning and 159.4MB in the end (delta: 37.7MB). Free memory was 92.3MB in the beginning and 129.1MB in the end (delta: -36.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.22ms. Allocated memory is still 159.4MB. Free memory was 129.1MB in the beginning and 127.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.58ms. Allocated memory is still 159.4MB. Free memory was 127.3MB in the beginning and 126.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 438.70ms. Allocated memory is still 159.4MB. Free memory was 125.7MB in the beginning and 110.5MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 262.61ms. Allocated memory is still 159.4MB. Free memory was 109.9MB in the beginning and 96.0MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 3.94ms. Allocated memory is still 159.4MB. Free memory was 96.0MB in the beginning and 95.7MB in the end (delta: 297.5kB). 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: 48]: 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 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 49 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=49occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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 [2021-11-25 18:13:15,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/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_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7 --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 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:13:18,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:13:18,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:13:18,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:13:18,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:13:18,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:13:18,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:13:18,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:13:18,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:13:18,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:13:18,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:13:18,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:13:18,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:13:18,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:13:18,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:13:18,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:13:18,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:13:18,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:13:18,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:13:18,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:13:18,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:13:18,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:13:18,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:13:18,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:13:18,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:13:18,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:13:18,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:13:18,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:13:18,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:13:18,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:13:18,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:13:18,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:13:18,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:13:18,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:13:18,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:13:18,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:13:18,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:13:18,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:13:18,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:13:18,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:13:18,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:13:18,157 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 18:13:18,204 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:13:18,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:13:18,205 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:13:18,206 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:13:18,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:13:18,207 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:13:18,207 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:13:18,207 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:13:18,207 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:13:18,208 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:13:18,209 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:13:18,209 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:13:18,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:13:18,210 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:13:18,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:13:18,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:13:18,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:13:18,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:13:18,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:13:18,212 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 18:13:18,212 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 18:13:18,212 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 18:13:18,212 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:13:18,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:13:18,213 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:13:18,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:13:18,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:13:18,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 18:13:18,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:13:18,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:13:18,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:13:18,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:13:18,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:13:18,215 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 18:13:18,216 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 18:13:18,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:13:18,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:13:18,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:13:18,217 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_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec [2021-11-25 18:13:18,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:13:18,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:13:18,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:13:18,662 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:13:18,663 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:13:18,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2021-11-25 18:13:18,735 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/data/e6e424002/618bc1bbb67c4dab98e532a9bd7e621b/FLAG23af541fc [2021-11-25 18:13:19,275 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:13:19,276 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2021-11-25 18:13:19,284 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/data/e6e424002/618bc1bbb67c4dab98e532a9bd7e621b/FLAG23af541fc [2021-11-25 18:13:19,604 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/data/e6e424002/618bc1bbb67c4dab98e532a9bd7e621b [2021-11-25 18:13:19,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:13:19,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:13:19,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:13:19,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:13:19,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:13:19,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:13:19" (1/1) ... [2021-11-25 18:13:19,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bd611ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:19, skipping insertion in model container [2021-11-25 18:13:19,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:13:19" (1/1) ... [2021-11-25 18:13:19,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:13:19,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:13:19,869 WARN L230 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_463e304c-67bf-4842-b9cd-5ed38ad9227d/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[1996,2009] [2021-11-25 18:13:19,875 WARN L230 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_463e304c-67bf-4842-b9cd-5ed38ad9227d/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[2390,2403] [2021-11-25 18:13:19,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:13:19,980 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:13:20,010 WARN L230 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_463e304c-67bf-4842-b9cd-5ed38ad9227d/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[1996,2009] [2021-11-25 18:13:20,012 WARN L230 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_463e304c-67bf-4842-b9cd-5ed38ad9227d/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[2390,2403] [2021-11-25 18:13:20,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:13:20,076 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:13:20,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:20 WrapperNode [2021-11-25 18:13:20,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:13:20,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:13:20,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:13:20,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:13:20,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:20" (1/1) ... [2021-11-25 18:13:20,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:20" (1/1) ... [2021-11-25 18:13:20,138 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2021-11-25 18:13:20,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:13:20,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:13:20,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:13:20,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:13:20,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:20" (1/1) ... [2021-11-25 18:13:20,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:20" (1/1) ... [2021-11-25 18:13:20,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:20" (1/1) ... [2021-11-25 18:13:20,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:20" (1/1) ... [2021-11-25 18:13:20,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:20" (1/1) ... [2021-11-25 18:13:20,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:20" (1/1) ... [2021-11-25 18:13:20,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:20" (1/1) ... [2021-11-25 18:13:20,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:13:20,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:13:20,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:13:20,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:13:20,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:20" (1/1) ... [2021-11-25 18:13:20,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:13:20,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:13:20,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:13:20,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:13:20,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:13:20,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 18:13:20,287 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-25 18:13:20,287 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-25 18:13:20,287 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-11-25 18:13:20,287 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-11-25 18:13:20,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:13:20,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:13:20,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 18:13:20,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 18:13:20,387 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:13:20,388 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:13:22,805 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:13:22,813 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:13:22,813 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 18:13:22,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:13:22 BoogieIcfgContainer [2021-11-25 18:13:22,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:13:22,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:13:22,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:13:22,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:13:22,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:13:19" (1/3) ... [2021-11-25 18:13:22,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd2722a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:13:22, skipping insertion in model container [2021-11-25 18:13:22,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:13:20" (2/3) ... [2021-11-25 18:13:22,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd2722a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:13:22, skipping insertion in model container [2021-11-25 18:13:22,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:13:22" (3/3) ... [2021-11-25 18:13:22,823 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_4-2a.c.cil.c [2021-11-25 18:13:22,828 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:13:22,828 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 18:13:22,875 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:13:22,882 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 [2021-11-25 18:13:22,883 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 18:13:22,896 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 18:13:22,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 18:13:22,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:13:22,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:13:22,901 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:13:22,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:13:22,906 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-25 18:13:22,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:13:22,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164454133] [2021-11-25 18:13:22,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:13:22,918 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:13:22,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:13:22,919 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:13:22,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 18:13:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:13:23,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 18:13:23,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:13:23,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:13:23,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:13:23,432 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:13:23,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164454133] [2021-11-25 18:13:23,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164454133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:13:23,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:13:23,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:13:23,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399049140] [2021-11-25 18:13:23,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:13:23,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 18:13:23,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:13:23,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 18:13:23,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:13:23,466 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-25 18:13:23,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:13:23,495 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-11-25 18:13:23,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 18:13:23,497 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-11-25 18:13:23,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:13:23,505 INFO L225 Difference]: With dead ends: 121 [2021-11-25 18:13:23,505 INFO L226 Difference]: Without dead ends: 56 [2021-11-25 18:13:23,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:13:23,513 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:13:23,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:13:23,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-25 18:13:23,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-11-25 18:13:23,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-25 18:13:23,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-11-25 18:13:23,555 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-11-25 18:13:23,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:13:23,555 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-11-25 18:13:23,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-25 18:13:23,556 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-11-25 18:13:23,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 18:13:23,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:13:23,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:13:23,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:13:23,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:13:23,774 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:13:23,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:13:23,777 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-25 18:13:23,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:13:23,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91764589] [2021-11-25 18:13:23,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:13:23,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:13:23,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:13:23,791 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:13:23,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 18:15:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:15:01,288 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 18:15:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:15:40,702 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-25 18:15:40,702 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 18:15:40,703 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 18:15:40,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 18:15:40,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-25 18:15:40,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:15:40,909 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-25 18:15:40,912 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:15:40,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:15:40 BoogieIcfgContainer [2021-11-25 18:15:40,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:15:40,934 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:15:40,934 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:15:40,934 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:15:40,937 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:13:22" (3/4) ... [2021-11-25 18:15:40,939 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 18:15:40,999 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 18:15:41,005 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:15:41,007 INFO L158 Benchmark]: Toolchain (without parser) took 141396.13ms. Allocated memory is still 79.7MB. Free memory was 62.1MB in the beginning and 42.8MB in the end (delta: 19.4MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2021-11-25 18:15:41,007 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 79.7MB. Free memory is still 60.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:15:41,008 INFO L158 Benchmark]: CACSL2BoogieTranslator took 464.67ms. Allocated memory is still 79.7MB. Free memory was 62.0MB in the beginning and 58.4MB in the end (delta: 3.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 18:15:41,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.24ms. Allocated memory is still 79.7MB. Free memory was 58.2MB in the beginning and 56.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:15:41,014 INFO L158 Benchmark]: Boogie Preprocessor took 58.03ms. Allocated memory is still 79.7MB. Free memory was 56.5MB in the beginning and 54.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:15:41,017 INFO L158 Benchmark]: RCFGBuilder took 2617.64ms. Allocated memory is still 79.7MB. Free memory was 54.8MB in the beginning and 41.2MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 18:15:41,017 INFO L158 Benchmark]: TraceAbstraction took 138115.80ms. Allocated memory is still 79.7MB. Free memory was 40.8MB in the beginning and 44.5MB in the end (delta: -3.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:15:41,019 INFO L158 Benchmark]: Witness Printer took 70.67ms. Allocated memory is still 79.7MB. Free memory was 44.5MB in the beginning and 42.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:15:41,021 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 79.7MB. Free memory is still 60.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 464.67ms. Allocated memory is still 79.7MB. Free memory was 62.0MB in the beginning and 58.4MB in the end (delta: 3.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.24ms. Allocated memory is still 79.7MB. Free memory was 58.2MB in the beginning and 56.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.03ms. Allocated memory is still 79.7MB. Free memory was 56.5MB in the beginning and 54.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2617.64ms. Allocated memory is still 79.7MB. Free memory was 54.8MB in the beginning and 41.2MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 138115.80ms. Allocated memory is still 79.7MB. Free memory was 40.8MB in the beginning and 44.5MB in the end (delta: -3.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 70.67ms. Allocated memory is still 79.7MB. Free memory was 44.5MB in the beginning and 42.8MB in the end (delta: 1.7MB). 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 - CounterExampleResult [Line: 48]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0.999992311000824, result=1.398435354232788, x=0.999992311000824] [L47] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=0.999992311000824, result=1.398435354232788, x=0.999992311000824] [L48] reach_error() VAL [IN=0.999992311000824, result=1.398435354232788, x=0.999992311000824] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 63 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 138.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 81 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 97.8s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-25 18:15:41,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463e304c-67bf-4842-b9cd-5ed38ad9227d/bin/utaipan-eEHZpOm5b7/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE