./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/sine_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/sine_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8 --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 a5a26936e5882e908e65fcc535a732b4a5fdf93eefb8790d4f78812dbf0b7728 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:55:13,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:55:13,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:55:13,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:55:13,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:55:13,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:55:13,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:55:13,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:55:13,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:55:13,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:55:13,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:55:13,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:55:13,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:55:13,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:55:13,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:55:13,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:55:13,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:55:13,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:55:13,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:55:13,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:55:13,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:55:13,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:55:13,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:55:13,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:55:13,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:55:13,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:55:13,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:55:13,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:55:13,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:55:13,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:55:13,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:55:13,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:55:13,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:55:13,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:55:13,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:55:13,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:55:13,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:55:13,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:55:13,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:55:13,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:55:13,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:55:13,275 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 00:55:13,300 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:55:13,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:55:13,302 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:55:13,302 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:55:13,302 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:55:13,303 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:55:13,303 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:55:13,303 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:55:13,303 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:55:13,304 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:55:13,304 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:55:13,304 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:55:13,304 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:55:13,305 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:55:13,305 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:55:13,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:55:13,306 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:55:13,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:55:13,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:55:13,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:55:13,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:55:13,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:55:13,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:55:13,308 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:55:13,308 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:55:13,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:55:13,309 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:55:13,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:55:13,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:55:13,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:55:13,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:55:13,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:55:13,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:55:13,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:55:13,311 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:55:13,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:55:13,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:55:13,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:55:13,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:55:13,312 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_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5a26936e5882e908e65fcc535a732b4a5fdf93eefb8790d4f78812dbf0b7728 [2021-11-07 00:55:13,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:55:13,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:55:13,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:55:13,580 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:55:13,581 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:55:13,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/floats-cdfpl/sine_4.i [2021-11-07 00:55:13,661 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/data/e766496a0/4f88e4a7fbd245439eb885842d344ab6/FLAGebf61a200 [2021-11-07 00:55:14,168 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:55:14,170 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/sv-benchmarks/c/floats-cdfpl/sine_4.i [2021-11-07 00:55:14,177 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/data/e766496a0/4f88e4a7fbd245439eb885842d344ab6/FLAGebf61a200 [2021-11-07 00:55:14,534 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/data/e766496a0/4f88e4a7fbd245439eb885842d344ab6 [2021-11-07 00:55:14,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:55:14,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:55:14,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:55:14,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:55:14,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:55:14,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a1c84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14, skipping insertion in model container [2021-11-07 00:55:14,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:55:14,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:55:14,765 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_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/sv-benchmarks/c/floats-cdfpl/sine_4.i[1145,1158] [2021-11-07 00:55:14,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:55:14,776 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:55:14,792 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_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/sv-benchmarks/c/floats-cdfpl/sine_4.i[1145,1158] [2021-11-07 00:55:14,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:55:14,806 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:55:14,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14 WrapperNode [2021-11-07 00:55:14,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:55:14,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:55:14,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:55:14,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:55:14,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:55:14,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:55:14,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:55:14,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:55:14,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:55:14,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:55:14,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:55:14,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:55:14,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (1/1) ... [2021-11-07 00:55:14,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:55:14,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:14,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:55:14,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:55:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 00:55:14,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:55:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:55:14,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:55:15,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:55:15,278 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-07 00:55:15,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:15 BoogieIcfgContainer [2021-11-07 00:55:15,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:55:15,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:55:15,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:55:15,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:55:15,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:55:14" (1/3) ... [2021-11-07 00:55:15,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8cae66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:55:15, skipping insertion in model container [2021-11-07 00:55:15,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:14" (2/3) ... [2021-11-07 00:55:15,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8cae66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:55:15, skipping insertion in model container [2021-11-07 00:55:15,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:15" (3/3) ... [2021-11-07 00:55:15,297 INFO L111 eAbstractionObserver]: Analyzing ICFG sine_4.i [2021-11-07 00:55:15,302 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:55:15,316 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 00:55:15,374 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:55:15,381 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 [2021-11-07 00:55:15,382 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 00:55:15,399 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) [2021-11-07 00:55:15,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 00:55:15,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:15,405 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 00:55:15,406 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:55:15,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:15,412 INFO L85 PathProgramCache]: Analyzing trace with hash 56123, now seen corresponding path program 1 times [2021-11-07 00:55:15,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:55:15,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786289595] [2021-11-07 00:55:15,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:15,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:55:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 00:55:15,529 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 00:55:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 00:55:15,567 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 00:55:15,570 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 00:55:15,571 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 00:55:15,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 00:55:15,578 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 00:55:15,581 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 00:55:15,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:55:15 BoogieIcfgContainer [2021-11-07 00:55:15,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 00:55:15,598 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 00:55:15,598 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 00:55:15,598 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 00:55:15,599 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:15" (3/4) ... [2021-11-07 00:55:15,602 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 00:55:15,603 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 00:55:15,605 INFO L168 Benchmark]: Toolchain (without parser) took 1065.05 ms. Allocated memory is still 104.9 MB. Free memory was 75.8 MB in the beginning and 52.7 MB in the end (delta: 23.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2021-11-07 00:55:15,605 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 104.9 MB. Free memory is still 62.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:55:15,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.17 ms. Allocated memory is still 104.9 MB. Free memory was 75.5 MB in the beginning and 80.4 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 00:55:15,607 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.00 ms. Allocated memory is still 104.9 MB. Free memory was 80.0 MB in the beginning and 78.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 00:55:15,608 INFO L168 Benchmark]: Boogie Preprocessor took 19.49 ms. Allocated memory is still 104.9 MB. Free memory was 78.7 MB in the beginning and 77.8 MB in the end (delta: 834.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:55:15,609 INFO L168 Benchmark]: RCFGBuilder took 420.10 ms. Allocated memory is still 104.9 MB. Free memory was 77.8 MB in the beginning and 66.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 00:55:15,609 INFO L168 Benchmark]: TraceAbstraction took 314.69 ms. Allocated memory is still 104.9 MB. Free memory was 66.5 MB in the beginning and 53.1 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 00:55:15,610 INFO L168 Benchmark]: Witness Printer took 4.87 ms. Allocated memory is still 104.9 MB. Free memory was 53.1 MB in the beginning and 52.7 MB in the end (delta: 394.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:55:15,614 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 104.9 MB. Free memory is still 62.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 267.17 ms. Allocated memory is still 104.9 MB. Free memory was 75.5 MB in the beginning and 80.4 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.00 ms. Allocated memory is still 104.9 MB. Free memory was 80.0 MB in the beginning and 78.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.49 ms. Allocated memory is still 104.9 MB. Free memory was 78.7 MB in the beginning and 77.8 MB in the end (delta: 834.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 420.10 ms. Allocated memory is still 104.9 MB. Free memory was 77.8 MB in the beginning and 66.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 314.69 ms. Allocated memory is still 104.9 MB. Free memory was 66.5 MB in the beginning and 53.1 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.87 ms. Allocated memory is still 104.9 MB. Free memory was 53.1 MB in the beginning and 52.7 MB in the end (delta: 394.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * 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: 28]: 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 27, overapproximation of someBinaryArithmeticFLOAToperation at line 25. Possible FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25] float result = x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L27] COND TRUE !(result <= 1.01f && result >= -1.01f) [L28] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 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: No data available, 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, 0.0s 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 [2021-11-07 00:55:15,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/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_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/sine_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8 --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 a5a26936e5882e908e65fcc535a732b4a5fdf93eefb8790d4f78812dbf0b7728 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:55:18,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:55:18,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:55:18,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:55:18,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:55:18,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:55:18,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:55:18,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:55:18,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:55:18,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:55:18,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:55:18,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:55:18,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:55:18,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:55:18,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:55:18,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:55:18,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:55:18,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:55:18,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:55:18,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:55:18,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:55:18,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:55:18,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:55:18,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:55:18,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:55:18,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:55:18,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:55:18,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:55:18,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:55:18,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:55:18,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:55:18,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:55:18,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:55:18,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:55:18,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:55:18,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:55:18,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:55:18,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:55:18,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:55:18,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:55:18,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:55:18,291 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 00:55:18,333 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:55:18,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:55:18,335 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:55:18,335 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:55:18,335 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:55:18,336 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:55:18,336 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:55:18,336 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:55:18,337 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:55:18,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:55:18,340 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:55:18,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:55:18,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:55:18,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:55:18,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:55:18,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:55:18,341 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:55:18,342 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:55:18,342 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:55:18,342 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:55:18,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:55:18,343 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:55:18,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:55:18,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:55:18,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:55:18,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:55:18,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:55:18,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:55:18,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:55:18,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:55:18,345 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:55:18,346 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:55:18,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:55:18,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:55:18,347 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:55:18,347 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_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5a26936e5882e908e65fcc535a732b4a5fdf93eefb8790d4f78812dbf0b7728 [2021-11-07 00:55:18,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:55:18,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:55:18,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:55:18,825 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:55:18,829 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:55:18,830 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/floats-cdfpl/sine_4.i [2021-11-07 00:55:18,901 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/data/5772facf0/af8741f0765e48699bd7b9a7d4a7c474/FLAG64bb5dc4f [2021-11-07 00:55:19,424 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:55:19,425 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/sv-benchmarks/c/floats-cdfpl/sine_4.i [2021-11-07 00:55:19,431 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/data/5772facf0/af8741f0765e48699bd7b9a7d4a7c474/FLAG64bb5dc4f [2021-11-07 00:55:19,804 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/data/5772facf0/af8741f0765e48699bd7b9a7d4a7c474 [2021-11-07 00:55:19,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:55:19,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:55:19,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:55:19,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:55:19,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:55:19,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:19" (1/1) ... [2021-11-07 00:55:19,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5afd75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:19, skipping insertion in model container [2021-11-07 00:55:19,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:19" (1/1) ... [2021-11-07 00:55:19,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:55:19,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:55:19,987 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_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/sv-benchmarks/c/floats-cdfpl/sine_4.i[1145,1158] [2021-11-07 00:55:19,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:55:20,003 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:55:20,020 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_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/sv-benchmarks/c/floats-cdfpl/sine_4.i[1145,1158] [2021-11-07 00:55:20,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:55:20,062 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:55:20,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:20 WrapperNode [2021-11-07 00:55:20,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:55:20,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:55:20,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:55:20,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:55:20,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:20" (1/1) ... [2021-11-07 00:55:20,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:20" (1/1) ... [2021-11-07 00:55:20,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:55:20,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:55:20,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:55:20,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:55:20,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:20" (1/1) ... [2021-11-07 00:55:20,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:20" (1/1) ... [2021-11-07 00:55:20,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:20" (1/1) ... [2021-11-07 00:55:20,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:20" (1/1) ... [2021-11-07 00:55:20,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:20" (1/1) ... [2021-11-07 00:55:20,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:20" (1/1) ... [2021-11-07 00:55:20,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:20" (1/1) ... [2021-11-07 00:55:20,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:55:20,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:55:20,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:55:20,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:55:20,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:20" (1/1) ... [2021-11-07 00:55:20,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:55:20,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:20,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:55:20,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:55:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:55:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:55:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:55:20,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:55:22,690 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:55:22,690 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-07 00:55:22,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:22 BoogieIcfgContainer [2021-11-07 00:55:22,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:55:22,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:55:22,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:55:22,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:55:22,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:55:19" (1/3) ... [2021-11-07 00:55:22,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405042c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:55:22, skipping insertion in model container [2021-11-07 00:55:22,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:20" (2/3) ... [2021-11-07 00:55:22,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405042c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:55:22, skipping insertion in model container [2021-11-07 00:55:22,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:22" (3/3) ... [2021-11-07 00:55:22,702 INFO L111 eAbstractionObserver]: Analyzing ICFG sine_4.i [2021-11-07 00:55:22,710 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:55:22,710 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 00:55:22,748 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:55:22,754 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 [2021-11-07 00:55:22,755 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 00:55:22,767 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) [2021-11-07 00:55:22,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 00:55:22,772 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:22,773 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 00:55:22,773 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:55:22,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:22,779 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-11-07 00:55:22,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:22,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416183045] [2021-11-07 00:55:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:22,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:22,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:22,809 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:22,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:55:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:23,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 00:55:23,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:23,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:23,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:23,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:23,569 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:23,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416183045] [2021-11-07 00:55:23,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416183045] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:23,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:23,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:55:23,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819277686] [2021-11-07 00:55:23,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 00:55:23,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:23,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 00:55:23,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:55:23,594 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) [2021-11-07 00:55:23,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:23,607 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-07 00:55:23,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 00:55:23,609 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 [2021-11-07 00:55:23,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:23,617 INFO L225 Difference]: With dead ends: 19 [2021-11-07 00:55:23,617 INFO L226 Difference]: Without dead ends: 7 [2021-11-07 00:55:23,619 INFO L786 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 [2021-11-07 00:55:23,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-07 00:55:23,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-07 00:55:23,647 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) [2021-11-07 00:55:23,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-11-07 00:55:23,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-11-07 00:55:23,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:23,650 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-11-07 00:55:23,650 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) [2021-11-07 00:55:23,650 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-11-07 00:55:23,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 00:55:23,651 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:23,651 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 00:55:23,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:23,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:23,872 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:55:23,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:23,873 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-11-07 00:55:23,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:23,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933374873] [2021-11-07 00:55:23,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:23,875 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:23,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:23,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:23,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4192cd3a-32fe-46a6-9c39-7e93fb07f63c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process