./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c --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_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/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_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/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_f0ef6917-b0dc-479b-81d3-c86fb2309d01/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 95e4857f2e80c4b2a09349ad506a32e395132bf666c8dc52d9ee1d4dade10d91 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:51:51,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:51:51,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:51:52,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:51:52,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:51:52,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:51:52,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:51:52,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:51:52,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:51:52,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:51:52,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:51:52,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:51:52,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:51:52,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:51:52,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:51:52,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:51:52,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:51:52,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:51:52,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:51:52,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:51:52,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:51:52,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:51:52,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:51:52,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:51:52,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:51:52,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:51:52,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:51:52,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:51:52,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:51:52,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:51:52,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:51:52,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:51:52,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:51:52,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:51:52,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:51:52,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:51:52,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:51:52,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:51:52,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:51:52,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:51:52,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:51:52,087 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:51:52,120 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:51:52,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:51:52,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:51:52,131 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:51:52,131 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:51:52,132 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:51:52,132 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:51:52,132 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:51:52,132 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:51:52,133 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:51:52,134 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:51:52,135 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:51:52,135 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:51:52,135 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:51:52,136 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:51:52,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:51:52,137 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:51:52,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:51:52,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:51:52,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:51:52,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:51:52,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:51:52,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:51:52,139 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:51:52,140 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:51:52,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:51:52,140 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:51:52,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:51:52,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:51:52,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:51:52,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:51:52,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:51:52,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:51:52,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:51:52,146 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:51:52,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:51:52,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:51:52,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:51:52,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:51:52,147 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_f0ef6917-b0dc-479b-81d3-c86fb2309d01/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95e4857f2e80c4b2a09349ad506a32e395132bf666c8dc52d9ee1d4dade10d91 [2021-11-07 01:51:52,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:51:52,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:51:52,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:51:52,549 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:51:52,550 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:51:52,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2021-11-07 01:51:52,627 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/data/c3a8b3858/e949b1a291184befa22e75108b5b54e0/FLAGd2f58003b [2021-11-07 01:51:53,206 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:51:53,207 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2021-11-07 01:51:53,215 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/data/c3a8b3858/e949b1a291184befa22e75108b5b54e0/FLAGd2f58003b [2021-11-07 01:51:53,565 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/data/c3a8b3858/e949b1a291184befa22e75108b5b54e0 [2021-11-07 01:51:53,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:51:53,572 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:51:53,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:51:53,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:51:53,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:51:53,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:51:53" (1/1) ... [2021-11-07 01:51:53,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@494dc0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:53, skipping insertion in model container [2021-11-07 01:51:53,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:51:53" (1/1) ... [2021-11-07 01:51:53,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:51:53,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:51:53,862 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_f0ef6917-b0dc-479b-81d3-c86fb2309d01/sv-benchmarks/c/float-newlib/float_req_bl_1230.c[1411,1424] [2021-11-07 01:51:53,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:51:53,875 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:51:53,903 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_f0ef6917-b0dc-479b-81d3-c86fb2309d01/sv-benchmarks/c/float-newlib/float_req_bl_1230.c[1411,1424] [2021-11-07 01:51:53,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:51:53,920 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:51:53,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:53 WrapperNode [2021-11-07 01:51:53,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:51:53,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:51:53,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:51:53,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:51:53,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:53" (1/1) ... [2021-11-07 01:51:53,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:53" (1/1) ... [2021-11-07 01:51:53,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:51:53,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:51:53,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:51:53,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:51:53,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:53" (1/1) ... [2021-11-07 01:51:53,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:53" (1/1) ... [2021-11-07 01:51:53,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:53" (1/1) ... [2021-11-07 01:51:53,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:53" (1/1) ... [2021-11-07 01:51:53,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:53" (1/1) ... [2021-11-07 01:51:54,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:53" (1/1) ... [2021-11-07 01:51:54,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:53" (1/1) ... [2021-11-07 01:51:54,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:51:54,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:51:54,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:51:54,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:51:54,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:53" (1/1) ... [2021-11-07 01:51:54,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:51:54,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:51:54,079 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:51:54,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:51:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:51:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:51:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-07 01:51:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:51:54,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:51:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 01:51:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:51:54,944 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:51:54,945 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-07 01:51:54,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:51:54 BoogieIcfgContainer [2021-11-07 01:51:54,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:51:54,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:51:54,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:51:54,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:51:54,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:51:53" (1/3) ... [2021-11-07 01:51:54,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f7aed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:51:54, skipping insertion in model container [2021-11-07 01:51:54,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:53" (2/3) ... [2021-11-07 01:51:54,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f7aed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:51:54, skipping insertion in model container [2021-11-07 01:51:54,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:51:54" (3/3) ... [2021-11-07 01:51:54,977 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2021-11-07 01:51:54,986 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:51:54,986 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:51:55,050 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:51:55,067 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 01:51:55,068 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:51:55,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 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 01:51:55,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 01:51:55,120 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:55,121 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:51:55,122 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:51:55,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:55,136 INFO L85 PathProgramCache]: Analyzing trace with hash -849326671, now seen corresponding path program 1 times [2021-11-07 01:51:55,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:51:55,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186925918] [2021-11-07 01:51:55,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:55,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:51:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:55,394 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 01:51:55,395 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:51:55,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186925918] [2021-11-07 01:51:55,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186925918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:55,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:55,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:51:55,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122911890] [2021-11-07 01:51:55,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:51:55,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:51:55,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:51:55,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:51:55,436 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 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 3.5) 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) [2021-11-07 01:51:55,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:55,459 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2021-11-07 01:51:55,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:51:55,461 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 [2021-11-07 01:51:55,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:55,472 INFO L225 Difference]: With dead ends: 27 [2021-11-07 01:51:55,473 INFO L226 Difference]: Without dead ends: 12 [2021-11-07 01:51:55,476 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 01:51:55,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-07 01:51:55,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-07 01:51:55,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 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 01:51:55,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-11-07 01:51:55,519 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2021-11-07 01:51:55,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:55,520 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-11-07 01:51:55,520 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) [2021-11-07 01:51:55,521 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-11-07 01:51:55,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:51:55,522 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:55,522 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:51:55,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:51:55,523 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:51:55,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:55,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1258184690, now seen corresponding path program 1 times [2021-11-07 01:51:55,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:51:55,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962246997] [2021-11-07 01:51:55,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:55,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:51:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:51:55,652 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:51:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:51:55,811 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 01:51:55,812 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:51:55,818 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:51:55,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 01:51:55,826 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-07 01:51:55,830 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:51:55,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:51:55 BoogieIcfgContainer [2021-11-07 01:51:55,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:51:55,868 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:51:55,868 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:51:55,870 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:51:55,870 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:51:54" (3/4) ... [2021-11-07 01:51:55,874 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:51:55,875 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:51:55,878 INFO L168 Benchmark]: Toolchain (without parser) took 2304.09 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 62.6 MB in the beginning and 99.4 MB in the end (delta: -36.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:51:55,878 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 104.9 MB. Free memory is still 78.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:51:55,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.64 ms. Allocated memory is still 104.9 MB. Free memory was 62.4 MB in the beginning and 78.6 MB in the end (delta: -16.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:51:55,883 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.53 ms. Allocated memory is still 104.9 MB. Free memory was 78.6 MB in the beginning and 77.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:51:55,890 INFO L168 Benchmark]: Boogie Preprocessor took 46.63 ms. Allocated memory is still 104.9 MB. Free memory was 77.0 MB in the beginning and 75.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:51:55,892 INFO L168 Benchmark]: RCFGBuilder took 932.80 ms. Allocated memory is still 104.9 MB. Free memory was 75.6 MB in the beginning and 53.2 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:51:55,893 INFO L168 Benchmark]: TraceAbstraction took 910.90 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 52.5 MB in the beginning and 99.7 MB in the end (delta: -47.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:51:55,893 INFO L168 Benchmark]: Witness Printer took 6.61 ms. Allocated memory is still 127.9 MB. Free memory is still 99.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:51:55,905 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 104.9 MB. Free memory is still 78.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 336.64 ms. Allocated memory is still 104.9 MB. Free memory was 62.4 MB in the beginning and 78.6 MB in the end (delta: -16.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.53 ms. Allocated memory is still 104.9 MB. Free memory was 78.6 MB in the beginning and 77.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.63 ms. Allocated memory is still 104.9 MB. Free memory was 77.0 MB in the beginning and 75.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 932.80 ms. Allocated memory is still 104.9 MB. Free memory was 75.6 MB in the beginning and 53.2 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 910.90 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 52.5 MB in the beginning and 99.7 MB in the end (delta: -47.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.61 ms. Allocated memory is still 127.9 MB. Free memory is still 99.4 MB. 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: 61]: 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 46, overapproximation of someBinaryArithmeticFLOAToperation at line 56. Possible FailurePath: [L56] float x = 0.0f / 0.0f; [L57] float y = 0.0f / 0.0f; [L14] __uint32_t w; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L22] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L24-L25] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L27-L28] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L30] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L33] return 0; [L37] COND TRUE __fpclassify_float(x) == 0 [L38] return y; [L58] float res = fmin_float(x, y); [L46] return x != x; [L60] COND TRUE !isnan_float(res) [L61] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 could not prove your program: unable to determine feasibility of some traces [2021-11-07 01:51:55,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/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_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/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_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/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_f0ef6917-b0dc-479b-81d3-c86fb2309d01/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 95e4857f2e80c4b2a09349ad506a32e395132bf666c8dc52d9ee1d4dade10d91 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:51:59,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:51:59,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:51:59,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:51:59,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:51:59,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:51:59,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:51:59,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:51:59,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:51:59,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:51:59,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:51:59,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:51:59,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:51:59,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:51:59,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:51:59,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:51:59,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:51:59,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:51:59,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:51:59,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:51:59,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:51:59,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:51:59,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:51:59,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:51:59,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:51:59,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:51:59,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:51:59,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:51:59,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:51:59,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:51:59,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:51:59,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:51:59,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:51:59,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:51:59,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:51:59,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:51:59,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:51:59,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:51:59,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:51:59,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:51:59,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:51:59,326 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:51:59,386 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:51:59,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:51:59,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:51:59,389 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:51:59,390 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:51:59,390 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:51:59,390 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:51:59,390 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:51:59,391 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:51:59,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:51:59,394 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:51:59,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:51:59,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:51:59,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:51:59,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:51:59,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:51:59,396 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:51:59,396 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:51:59,397 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:51:59,397 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:51:59,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:51:59,398 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:51:59,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:51:59,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:51:59,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:51:59,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:51:59,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:51:59,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:51:59,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:51:59,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:51:59,400 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:51:59,401 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:51:59,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:51:59,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:51:59,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:51:59,402 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_f0ef6917-b0dc-479b-81d3-c86fb2309d01/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95e4857f2e80c4b2a09349ad506a32e395132bf666c8dc52d9ee1d4dade10d91 [2021-11-07 01:51:59,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:51:59,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:51:59,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:51:59,956 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:51:59,957 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:51:59,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2021-11-07 01:52:00,055 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/data/04abbcd90/059280a38def4f40bef4d28a5d5ef655/FLAG0bd6d866e [2021-11-07 01:52:00,875 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:52:00,876 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2021-11-07 01:52:00,885 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/data/04abbcd90/059280a38def4f40bef4d28a5d5ef655/FLAG0bd6d866e [2021-11-07 01:52:01,164 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/data/04abbcd90/059280a38def4f40bef4d28a5d5ef655 [2021-11-07 01:52:01,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:52:01,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:52:01,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:52:01,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:52:01,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:52:01,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:52:01" (1/1) ... [2021-11-07 01:52:01,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589373eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:01, skipping insertion in model container [2021-11-07 01:52:01,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:52:01" (1/1) ... [2021-11-07 01:52:01,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:52:01,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:52:01,461 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_f0ef6917-b0dc-479b-81d3-c86fb2309d01/sv-benchmarks/c/float-newlib/float_req_bl_1230.c[1411,1424] [2021-11-07 01:52:01,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:52:01,483 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:52:01,514 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_f0ef6917-b0dc-479b-81d3-c86fb2309d01/sv-benchmarks/c/float-newlib/float_req_bl_1230.c[1411,1424] [2021-11-07 01:52:01,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:52:01,535 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:52:01,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:01 WrapperNode [2021-11-07 01:52:01,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:52:01,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:52:01,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:52:01,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:52:01,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:01" (1/1) ... [2021-11-07 01:52:01,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:01" (1/1) ... [2021-11-07 01:52:01,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:52:01,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:52:01,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:52:01,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:52:01,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:01" (1/1) ... [2021-11-07 01:52:01,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:01" (1/1) ... [2021-11-07 01:52:01,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:01" (1/1) ... [2021-11-07 01:52:01,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:01" (1/1) ... [2021-11-07 01:52:01,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:01" (1/1) ... [2021-11-07 01:52:01,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:01" (1/1) ... [2021-11-07 01:52:01,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:01" (1/1) ... [2021-11-07 01:52:01,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:52:01,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:52:01,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:52:01,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:52:01,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:01" (1/1) ... [2021-11-07 01:52:01,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:52:01,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:52:01,695 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:52:01,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:52:01,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:52:01,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:52:01,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:52:01,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:52:01,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:52:01,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-07 01:52:01,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:52:02,190 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:52:02,190 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-07 01:52:02,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:52:02 BoogieIcfgContainer [2021-11-07 01:52:02,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:52:02,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:52:02,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:52:02,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:52:02,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:52:01" (1/3) ... [2021-11-07 01:52:02,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea4f09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:52:02, skipping insertion in model container [2021-11-07 01:52:02,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:01" (2/3) ... [2021-11-07 01:52:02,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea4f09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:52:02, skipping insertion in model container [2021-11-07 01:52:02,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:52:02" (3/3) ... [2021-11-07 01:52:02,217 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2021-11-07 01:52:02,224 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:52:02,224 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:52:02,304 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:52:02,313 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 01:52:02,314 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:52:02,350 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 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 01:52:02,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 01:52:02,373 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:02,374 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:02,375 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:52:02,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:02,382 INFO L85 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2021-11-07 01:52:02,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:02,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35031055] [2021-11-07 01:52:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:02,425 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:02,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:02,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:02,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:52:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:02,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:52:02,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:02,652 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 01:52:02,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:02,693 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 01:52:02,694 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:02,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35031055] [2021-11-07 01:52:02,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35031055] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:02,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:02,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:52:02,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61236444] [2021-11-07 01:52:02,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:52:02,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:02,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:52:02,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:52:02,724 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 01:52:02,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:02,763 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-11-07 01:52:02,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:52:02,768 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-11-07 01:52:02,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:02,808 INFO L225 Difference]: With dead ends: 54 [2021-11-07 01:52:02,809 INFO L226 Difference]: Without dead ends: 25 [2021-11-07 01:52:02,813 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 01:52:02,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-07 01:52:02,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-07 01:52:02,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 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 01:52:02,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2021-11-07 01:52:02,870 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2021-11-07 01:52:02,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:02,871 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-11-07 01:52:02,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 01:52:02,872 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2021-11-07 01:52:02,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 01:52:02,874 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:02,874 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:02,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:03,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:03,091 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:52:03,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:03,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2021-11-07 01:52:03,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:03,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845678917] [2021-11-07 01:52:03,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:03,095 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:03,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:03,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:03,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:52:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:03,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:52:03,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:03,317 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 01:52:03,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:03,381 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 01:52:03,381 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:03,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845678917] [2021-11-07 01:52:03,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845678917] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:03,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:03,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:52:03,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606706220] [2021-11-07 01:52:03,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:52:03,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:03,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:52:03,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:52:03,389 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 01:52:03,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:03,543 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2021-11-07 01:52:03,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:52:03,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 11 [2021-11-07 01:52:03,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:03,548 INFO L225 Difference]: With dead ends: 52 [2021-11-07 01:52:03,548 INFO L226 Difference]: Without dead ends: 47 [2021-11-07 01:52:03,552 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:52:03,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-07 01:52:03,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-11-07 01:52:03,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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 01:52:03,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-11-07 01:52:03,577 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2021-11-07 01:52:03,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:03,578 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-11-07 01:52:03,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 01:52:03,581 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-11-07 01:52:03,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 01:52:03,582 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:03,583 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:03,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:03,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:03,801 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:52:03,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:03,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2021-11-07 01:52:03,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:03,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874007894] [2021-11-07 01:52:03,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:03,805 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:03,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:03,808 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:03,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:52:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:03,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:52:03,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:04,230 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 01:52:04,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:04,395 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 01:52:04,395 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:04,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874007894] [2021-11-07 01:52:04,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874007894] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:04,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:04,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-07 01:52:04,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487025445] [2021-11-07 01:52:04,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:52:04,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:04,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:52:04,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:52:04,400 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 01:52:04,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:04,771 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-11-07 01:52:04,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:52:04,772 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 14 [2021-11-07 01:52:04,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:04,773 INFO L225 Difference]: With dead ends: 36 [2021-11-07 01:52:04,774 INFO L226 Difference]: Without dead ends: 27 [2021-11-07 01:52:04,774 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:52:04,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-07 01:52:04,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-11-07 01:52:04,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 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 01:52:04,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2021-11-07 01:52:04,780 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2021-11-07 01:52:04,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:04,781 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2021-11-07 01:52:04,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 01:52:04,781 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-11-07 01:52:04,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:52:04,782 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:04,782 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:04,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:05,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:05,006 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:52:05,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:05,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2021-11-07 01:52:05,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:05,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965870363] [2021-11-07 01:52:05,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:05,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:05,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:05,010 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:05,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:52:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:05,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:52:05,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:05,221 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 01:52:05,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:05,282 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 01:52:05,282 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:05,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965870363] [2021-11-07 01:52:05,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965870363] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:05,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:05,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:52:05,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992958567] [2021-11-07 01:52:05,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:52:05,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:05,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:52:05,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:52:05,287 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 01:52:05,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:05,416 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-11-07 01:52:05,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:52:05,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 16 [2021-11-07 01:52:05,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:05,420 INFO L225 Difference]: With dead ends: 52 [2021-11-07 01:52:05,420 INFO L226 Difference]: Without dead ends: 47 [2021-11-07 01:52:05,421 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:52:05,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-07 01:52:05,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-11-07 01:52:05,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 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 01:52:05,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-11-07 01:52:05,434 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2021-11-07 01:52:05,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:05,434 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-11-07 01:52:05,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 01:52:05,435 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-11-07 01:52:05,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 01:52:05,436 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:05,436 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:05,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:05,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:05,653 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:52:05,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:05,654 INFO L85 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2021-11-07 01:52:05,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:05,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363031996] [2021-11-07 01:52:05,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:05,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:05,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:05,657 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:05,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:52:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:05,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:52:05,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:06,151 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 01:52:06,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:06,363 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 01:52:06,363 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:06,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363031996] [2021-11-07 01:52:06,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363031996] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:06,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:06,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-07 01:52:06,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419444270] [2021-11-07 01:52:06,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:52:06,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:06,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:52:06,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:52:06,366 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 01:52:06,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:06,754 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2021-11-07 01:52:06,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:52:06,755 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 18 [2021-11-07 01:52:06,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:06,756 INFO L225 Difference]: With dead ends: 32 [2021-11-07 01:52:06,756 INFO L226 Difference]: Without dead ends: 23 [2021-11-07 01:52:06,756 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:52:06,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-07 01:52:06,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-07 01:52:06,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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 01:52:06,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-11-07 01:52:06,761 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2021-11-07 01:52:06,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:06,761 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-11-07 01:52:06,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 01:52:06,761 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-11-07 01:52:06,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 01:52:06,762 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:06,762 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:06,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:06,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:06,973 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:52:06,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:06,974 INFO L85 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2021-11-07 01:52:06,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:06,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143790071] [2021-11-07 01:52:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:06,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:06,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:06,976 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:06,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:52:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:07,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:52:07,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:07,427 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 01:52:07,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:07,595 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 01:52:07,595 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:07,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143790071] [2021-11-07 01:52:07,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143790071] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:07,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:07,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-07 01:52:07,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677616001] [2021-11-07 01:52:07,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:52:07,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:07,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:52:07,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:52:07,599 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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 01:52:07,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:07,821 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-11-07 01:52:07,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:52:07,821 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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 19 [2021-11-07 01:52:07,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:07,822 INFO L225 Difference]: With dead ends: 23 [2021-11-07 01:52:07,822 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 01:52:07,823 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:52:07,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 01:52:07,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 01:52:07,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:07,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 01:52:07,823 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-11-07 01:52:07,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:07,824 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 01:52:07,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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 01:52:07,824 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 01:52:07,824 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 01:52:07,827 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:52:07,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:08,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:08,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 01:52:08,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:52:08,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:52:08,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:52:08,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:52:08,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:52:08,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:52:08,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:52:08,340 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 63) no Hoare annotation was computed. [2021-11-07 01:52:08,340 INFO L857 garLoopResultBuilder]: For program point L27(lines 27 33) no Hoare annotation was computed. [2021-11-07 01:52:08,341 INFO L857 garLoopResultBuilder]: For program point L27-1(lines 27 33) no Hoare annotation was computed. [2021-11-07 01:52:08,341 INFO L860 garLoopResultBuilder]: At program point L65(lines 48 66) the Hoare annotation is: true [2021-11-07 01:52:08,341 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-07 01:52:08,341 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 01:52:08,341 INFO L857 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2021-11-07 01:52:08,342 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-07 01:52:08,342 INFO L857 garLoopResultBuilder]: For program point L24(lines 24 33) no Hoare annotation was computed. [2021-11-07 01:52:08,342 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 61) no Hoare annotation was computed. [2021-11-07 01:52:08,342 INFO L857 garLoopResultBuilder]: For program point L24-1(lines 24 33) no Hoare annotation was computed. [2021-11-07 01:52:08,343 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2021-11-07 01:52:08,343 INFO L853 garLoopResultBuilder]: At program point L16-2(lines 16 20) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x))) [2021-11-07 01:52:08,343 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 13 34) no Hoare annotation was computed. [2021-11-07 01:52:08,343 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 20) no Hoare annotation was computed. [2021-11-07 01:52:08,343 INFO L853 garLoopResultBuilder]: At program point L16-6(lines 16 20) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x))) [2021-11-07 01:52:08,344 INFO L857 garLoopResultBuilder]: For program point L16-7(lines 13 34) no Hoare annotation was computed. [2021-11-07 01:52:08,344 INFO L857 garLoopResultBuilder]: For program point L37(lines 37 38) no Hoare annotation was computed. [2021-11-07 01:52:08,344 INFO L853 garLoopResultBuilder]: At program point L33(lines 13 34) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x))) [2021-11-07 01:52:08,344 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 01:52:08,344 INFO L853 garLoopResultBuilder]: At program point L33-1(lines 13 34) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)))) (or (and .cse0 (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x))) (and .cse0 (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|))))) [2021-11-07 01:52:08,345 INFO L853 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmin_float_#res| |ULTIMATE.start_fmin_float_#res|)) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmin_float_~y (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) [2021-11-07 01:52:08,345 INFO L857 garLoopResultBuilder]: For program point L42(line 42) no Hoare annotation was computed. [2021-11-07 01:52:08,345 INFO L857 garLoopResultBuilder]: For program point L42-2(line 42) no Hoare annotation was computed. [2021-11-07 01:52:08,345 INFO L853 garLoopResultBuilder]: At program point L42-3(lines 36 43) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmin_float_#res| |ULTIMATE.start_fmin_float_#res|)) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmin_float_~y (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2021-11-07 01:52:08,345 INFO L857 garLoopResultBuilder]: For program point L30(lines 30 33) no Hoare annotation was computed. [2021-11-07 01:52:08,345 INFO L857 garLoopResultBuilder]: For program point L30-1(lines 30 33) no Hoare annotation was computed. [2021-11-07 01:52:08,346 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 40) no Hoare annotation was computed. [2021-11-07 01:52:08,350 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-07 01:52:08,352 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:52:08,372 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-07 01:52:08,374 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-07 01:52:08,375 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-07 01:52:08,376 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-07 01:52:08,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:52:08 BoogieIcfgContainer [2021-11-07 01:52:08,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:52:08,378 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:52:08,378 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:52:08,378 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:52:08,379 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:52:02" (3/4) ... [2021-11-07 01:52:08,383 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 01:52:08,398 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-11-07 01:52:08,399 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-07 01:52:08,399 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-07 01:52:08,400 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:52:08,432 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~FLOAT(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2021-11-07 01:52:08,433 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result [2021-11-07 01:52:08,434 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x)) || (!~fp.eq~FLOAT(y, y) && !(0bv32 == \result)) [2021-11-07 01:52:08,459 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:52:08,459 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:52:08,461 INFO L168 Benchmark]: Toolchain (without parser) took 7280.48 ms. Allocated memory was 71.3 MB in the beginning and 107.0 MB in the end (delta: 35.7 MB). Free memory was 53.4 MB in the beginning and 49.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 41.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:52:08,462 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 71.3 MB. Free memory is still 52.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:52:08,463 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.89 ms. Allocated memory is still 71.3 MB. Free memory was 53.2 MB in the beginning and 42.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:52:08,463 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.54 ms. Allocated memory is still 71.3 MB. Free memory was 42.6 MB in the beginning and 41.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:52:08,464 INFO L168 Benchmark]: Boogie Preprocessor took 45.42 ms. Allocated memory is still 71.3 MB. Free memory was 41.0 MB in the beginning and 39.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:52:08,465 INFO L168 Benchmark]: RCFGBuilder took 552.16 ms. Allocated memory is still 71.3 MB. Free memory was 39.3 MB in the beginning and 45.8 MB in the end (delta: -6.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:52:08,465 INFO L168 Benchmark]: TraceAbstraction took 6181.71 ms. Allocated memory was 71.3 MB in the beginning and 107.0 MB in the end (delta: 35.7 MB). Free memory was 45.2 MB in the beginning and 53.2 MB in the end (delta: -8.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:52:08,466 INFO L168 Benchmark]: Witness Printer took 81.74 ms. Allocated memory is still 107.0 MB. Free memory was 53.2 MB in the beginning and 49.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:52:08,469 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 71.3 MB. Free memory is still 52.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 353.89 ms. Allocated memory is still 71.3 MB. Free memory was 53.2 MB in the beginning and 42.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.54 ms. Allocated memory is still 71.3 MB. Free memory was 42.6 MB in the beginning and 41.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.42 ms. Allocated memory is still 71.3 MB. Free memory was 41.0 MB in the beginning and 39.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 552.16 ms. Allocated memory is still 71.3 MB. Free memory was 39.3 MB in the beginning and 45.8 MB in the end (delta: -6.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6181.71 ms. Allocated memory was 71.3 MB in the beginning and 107.0 MB in the end (delta: 35.7 MB). Free memory was 45.2 MB in the beginning and 53.2 MB in the end (delta: -8.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. * Witness Printer took 81.74 ms. Allocated memory is still 107.0 MB. Free memory was 53.2 MB in the beginning and 49.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 61]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 126 SDslu, 523 SDs, 0 SdLazy, 132 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 33, 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, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 188 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 35 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 538 SizeOfPredicates, 32 NumberOfNonLiveVariables, 359 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: (!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x)) || (!~fp.eq~FLOAT(y, y) && !(0bv32 == \result)) - InvariantResult [Line: 46]: Loop Invariant [2021-11-07 01:52:08,493 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-07 01:52:08,493 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (!~fp.eq~FLOAT(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 36]: Loop Invariant [2021-11-07 01:52:08,495 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-07 01:52:08,495 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: !~fp.eq~FLOAT(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-07 01:52:08,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0ef6917-b0dc-479b-81d3-c86fb2309d01/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 Writing output log to file Ultimate.log Result: TRUE