./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI --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 63854123d7ab77bd9f32ab7eefa710cb72f6a12a ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI --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 63854123d7ab77bd9f32ab7eefa710cb72f6a12a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:32:04,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:32:04,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:32:04,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:32:04,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:32:04,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:32:04,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:32:04,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:32:04,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:32:04,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:32:04,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:32:04,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:32:04,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:32:04,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:32:04,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:32:04,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:32:04,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:32:04,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:32:04,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:32:04,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:32:04,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:32:04,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:32:04,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:32:04,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:32:04,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:32:04,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:32:04,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:32:04,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:32:04,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:32:04,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:32:04,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:32:04,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:32:04,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:32:04,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:32:04,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:32:04,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:32:04,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:32:04,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:32:04,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:32:04,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:32:04,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:32:04,275 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:32:04,321 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:32:04,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:32:04,323 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:32:04,323 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:32:04,323 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:32:04,324 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:32:04,324 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:32:04,325 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:32:04,332 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:32:04,332 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:32:04,333 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:32:04,334 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:32:04,334 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:32:04,334 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:32:04,335 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:32:04,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:32:04,336 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:32:04,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:32:04,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:32:04,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:32:04,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:32:04,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:32:04,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:32:04,337 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:32:04,338 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:32:04,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:32:04,338 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:32:04,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:32:04,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:32:04,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:32:04,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:04,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:32:04,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:32:04,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:32:04,342 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:32:04,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:32:04,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:32:04,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:32:04,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:32:04,343 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_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2021-10-11 02:32:04,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:32:04,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:32:04,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:32:04,643 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:32:04,644 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:32:04,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-10-11 02:32:04,720 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/data/4846dc97a/0b72c8c44e3d4415a5621b1d3863a95e/FLAGd1b32c4fa [2021-10-11 02:32:05,421 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:32:05,424 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-10-11 02:32:05,443 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/data/4846dc97a/0b72c8c44e3d4415a5621b1d3863a95e/FLAGd1b32c4fa [2021-10-11 02:32:05,734 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/data/4846dc97a/0b72c8c44e3d4415a5621b1d3863a95e [2021-10-11 02:32:05,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:32:05,744 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:32:05,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:05,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:32:05,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:32:05,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:05" (1/1) ... [2021-10-11 02:32:05,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b0be1f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:05, skipping insertion in model container [2021-10-11 02:32:05,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:05" (1/1) ... [2021-10-11 02:32:05,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:32:05,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:32:06,028 WARN L226 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_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-10-11 02:32:06,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:06,083 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:32:06,096 WARN L226 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_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-10-11 02:32:06,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:06,139 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:32:06,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:06 WrapperNode [2021-10-11 02:32:06,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:06,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:06,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:32:06,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:32:06,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:06" (1/1) ... [2021-10-11 02:32:06,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:06" (1/1) ... [2021-10-11 02:32:06,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:06,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:32:06,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:32:06,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:32:06,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:06" (1/1) ... [2021-10-11 02:32:06,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:06" (1/1) ... [2021-10-11 02:32:06,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:06" (1/1) ... [2021-10-11 02:32:06,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:06" (1/1) ... [2021-10-11 02:32:06,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:06" (1/1) ... [2021-10-11 02:32:06,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:06" (1/1) ... [2021-10-11 02:32:06,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:06" (1/1) ... [2021-10-11 02:32:06,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:32:06,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:32:06,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:32:06,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:32:06,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:06" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:06,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:32:06,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:32:06,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:32:06,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:32:07,451 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:32:07,452 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-10-11 02:32:07,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:07 BoogieIcfgContainer [2021-10-11 02:32:07,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:32:07,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:32:07,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:32:07,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:32:07,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:32:05" (1/3) ... [2021-10-11 02:32:07,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778379c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:07, skipping insertion in model container [2021-10-11 02:32:07,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:06" (2/3) ... [2021-10-11 02:32:07,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778379c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:07, skipping insertion in model container [2021-10-11 02:32:07,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:07" (3/3) ... [2021-10-11 02:32:07,466 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2021-10-11 02:32:07,482 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:32:07,486 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-10-11 02:32:07,498 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-11 02:32:07,526 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:32:07,526 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:32:07,526 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:32:07,527 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:32:07,527 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:32:07,527 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:32:07,527 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:32:07,527 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:32:07,545 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2021-10-11 02:32:07,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:32:07,552 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:07,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:07,553 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:07,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:07,559 INFO L82 PathProgramCache]: Analyzing trace with hash -242019376, now seen corresponding path program 1 times [2021-10-11 02:32:07,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:07,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808213541] [2021-10-11 02:32:07,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:07,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808213541] [2021-10-11 02:32:07,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:07,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:32:07,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417574776] [2021-10-11 02:32:07,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:32:07,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:07,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:32:07,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:32:07,837 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 6 states. [2021-10-11 02:32:07,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:07,990 INFO L93 Difference]: Finished difference Result 208 states and 302 transitions. [2021-10-11 02:32:07,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:32:07,992 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-10-11 02:32:07,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:08,003 INFO L225 Difference]: With dead ends: 208 [2021-10-11 02:32:08,003 INFO L226 Difference]: Without dead ends: 137 [2021-10-11 02:32:08,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:32:08,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-11 02:32:08,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 98. [2021-10-11 02:32:08,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-10-11 02:32:08,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 136 transitions. [2021-10-11 02:32:08,056 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 136 transitions. Word has length 10 [2021-10-11 02:32:08,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:08,056 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 136 transitions. [2021-10-11 02:32:08,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:32:08,056 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 136 transitions. [2021-10-11 02:32:08,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:32:08,057 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:08,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:08,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:32:08,058 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:08,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:08,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1348999057, now seen corresponding path program 1 times [2021-10-11 02:32:08,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:08,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973419903] [2021-10-11 02:32:08,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:08,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973419903] [2021-10-11 02:32:08,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:08,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-11 02:32:08,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783637973] [2021-10-11 02:32:08,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:32:08,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:08,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:32:08,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:32:08,401 INFO L87 Difference]: Start difference. First operand 98 states and 136 transitions. Second operand 10 states. [2021-10-11 02:32:08,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:08,942 INFO L93 Difference]: Finished difference Result 144 states and 181 transitions. [2021-10-11 02:32:08,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-11 02:32:08,942 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2021-10-11 02:32:08,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:08,945 INFO L225 Difference]: With dead ends: 144 [2021-10-11 02:32:08,945 INFO L226 Difference]: Without dead ends: 136 [2021-10-11 02:32:08,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-10-11 02:32:08,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-11 02:32:08,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 96. [2021-10-11 02:32:08,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-10-11 02:32:08,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 132 transitions. [2021-10-11 02:32:08,964 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 132 transitions. Word has length 13 [2021-10-11 02:32:08,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:08,965 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 132 transitions. [2021-10-11 02:32:08,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:32:08,965 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 132 transitions. [2021-10-11 02:32:08,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:32:08,967 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:08,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:08,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:32:08,968 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:08,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:08,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1065932421, now seen corresponding path program 1 times [2021-10-11 02:32:08,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:08,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308822386] [2021-10-11 02:32:08,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:09,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308822386] [2021-10-11 02:32:09,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:09,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:32:09,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906913165] [2021-10-11 02:32:09,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:32:09,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:09,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:32:09,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:09,105 INFO L87 Difference]: Start difference. First operand 96 states and 132 transitions. Second operand 5 states. [2021-10-11 02:32:09,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:09,234 INFO L93 Difference]: Finished difference Result 144 states and 176 transitions. [2021-10-11 02:32:09,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:32:09,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-10-11 02:32:09,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:09,242 INFO L225 Difference]: With dead ends: 144 [2021-10-11 02:32:09,242 INFO L226 Difference]: Without dead ends: 122 [2021-10-11 02:32:09,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:32:09,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-11 02:32:09,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 86. [2021-10-11 02:32:09,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-10-11 02:32:09,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2021-10-11 02:32:09,268 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 14 [2021-10-11 02:32:09,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:09,268 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2021-10-11 02:32:09,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:32:09,269 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2021-10-11 02:32:09,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:32:09,270 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:09,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:09,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:32:09,270 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:09,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:09,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1091264279, now seen corresponding path program 1 times [2021-10-11 02:32:09,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:09,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040817126] [2021-10-11 02:32:09,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:09,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:09,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040817126] [2021-10-11 02:32:09,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:09,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:32:09,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31342190] [2021-10-11 02:32:09,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:32:09,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:09,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:32:09,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:32:09,484 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand 7 states. [2021-10-11 02:32:09,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:09,687 INFO L93 Difference]: Finished difference Result 249 states and 307 transitions. [2021-10-11 02:32:09,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:32:09,688 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2021-10-11 02:32:09,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:09,692 INFO L225 Difference]: With dead ends: 249 [2021-10-11 02:32:09,693 INFO L226 Difference]: Without dead ends: 229 [2021-10-11 02:32:09,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:32:09,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-10-11 02:32:09,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 92. [2021-10-11 02:32:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-10-11 02:32:09,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 125 transitions. [2021-10-11 02:32:09,733 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 125 transitions. Word has length 16 [2021-10-11 02:32:09,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:09,733 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 125 transitions. [2021-10-11 02:32:09,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:32:09,734 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 125 transitions. [2021-10-11 02:32:09,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:32:09,735 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:09,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:09,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:32:09,735 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:09,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:09,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1556554917, now seen corresponding path program 1 times [2021-10-11 02:32:09,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:09,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659742843] [2021-10-11 02:32:09,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:09,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:09,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659742843] [2021-10-11 02:32:09,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:09,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:32:09,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404862285] [2021-10-11 02:32:09,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:32:09,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:09,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:32:09,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:09,849 INFO L87 Difference]: Start difference. First operand 92 states and 125 transitions. Second operand 5 states. [2021-10-11 02:32:09,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:09,933 INFO L93 Difference]: Finished difference Result 128 states and 162 transitions. [2021-10-11 02:32:09,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:32:09,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2021-10-11 02:32:09,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:09,935 INFO L225 Difference]: With dead ends: 128 [2021-10-11 02:32:09,935 INFO L226 Difference]: Without dead ends: 108 [2021-10-11 02:32:09,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:32:09,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-11 02:32:09,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 84. [2021-10-11 02:32:09,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-10-11 02:32:09,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 113 transitions. [2021-10-11 02:32:09,953 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 113 transitions. Word has length 16 [2021-10-11 02:32:09,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:09,953 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 113 transitions. [2021-10-11 02:32:09,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:32:09,954 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 113 transitions. [2021-10-11 02:32:09,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:32:09,955 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:09,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:09,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:32:09,955 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:09,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:09,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1697293124, now seen corresponding path program 1 times [2021-10-11 02:32:09,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:09,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534838070] [2021-10-11 02:32:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:10,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534838070] [2021-10-11 02:32:10,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:10,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 02:32:10,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140901783] [2021-10-11 02:32:10,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:32:10,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:10,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:32:10,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:32:10,326 INFO L87 Difference]: Start difference. First operand 84 states and 113 transitions. Second operand 9 states. [2021-10-11 02:32:10,932 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2021-10-11 02:32:11,269 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-10-11 02:32:11,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:11,412 INFO L93 Difference]: Finished difference Result 100 states and 128 transitions. [2021-10-11 02:32:11,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:32:11,412 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2021-10-11 02:32:11,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:11,413 INFO L225 Difference]: With dead ends: 100 [2021-10-11 02:32:11,414 INFO L226 Difference]: Without dead ends: 82 [2021-10-11 02:32:11,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:32:11,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-11 02:32:11,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2021-10-11 02:32:11,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 02:32:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2021-10-11 02:32:11,421 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 17 [2021-10-11 02:32:11,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:11,421 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2021-10-11 02:32:11,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:32:11,421 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2021-10-11 02:32:11,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:32:11,422 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:11,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:11,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:32:11,423 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:11,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:11,423 INFO L82 PathProgramCache]: Analyzing trace with hash -530507776, now seen corresponding path program 1 times [2021-10-11 02:32:11,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:11,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449436063] [2021-10-11 02:32:11,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:11,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:11,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449436063] [2021-10-11 02:32:11,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:11,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 02:32:11,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878097113] [2021-10-11 02:32:11,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:32:11,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:11,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:32:11,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:32:11,681 INFO L87 Difference]: Start difference. First operand 74 states and 97 transitions. Second operand 9 states. [2021-10-11 02:32:13,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:13,346 INFO L93 Difference]: Finished difference Result 287 states and 342 transitions. [2021-10-11 02:32:13,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-11 02:32:13,346 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2021-10-11 02:32:13,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:13,348 INFO L225 Difference]: With dead ends: 287 [2021-10-11 02:32:13,348 INFO L226 Difference]: Without dead ends: 275 [2021-10-11 02:32:13,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2021-10-11 02:32:13,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-10-11 02:32:13,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 95. [2021-10-11 02:32:13,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-10-11 02:32:13,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 128 transitions. [2021-10-11 02:32:13,360 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 128 transitions. Word has length 17 [2021-10-11 02:32:13,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:13,361 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 128 transitions. [2021-10-11 02:32:13,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:32:13,361 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 128 transitions. [2021-10-11 02:32:13,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:32:13,362 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:13,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:13,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:32:13,363 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:13,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:13,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1008524228, now seen corresponding path program 1 times [2021-10-11 02:32:13,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:13,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820364825] [2021-10-11 02:32:13,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:13,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820364825] [2021-10-11 02:32:13,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:13,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-11 02:32:13,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841874707] [2021-10-11 02:32:13,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:32:13,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:13,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:32:13,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:32:13,615 INFO L87 Difference]: Start difference. First operand 95 states and 128 transitions. Second operand 8 states. [2021-10-11 02:32:13,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:13,959 INFO L93 Difference]: Finished difference Result 109 states and 141 transitions. [2021-10-11 02:32:13,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 02:32:13,959 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2021-10-11 02:32:13,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:13,960 INFO L225 Difference]: With dead ends: 109 [2021-10-11 02:32:13,960 INFO L226 Difference]: Without dead ends: 101 [2021-10-11 02:32:13,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:32:13,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-11 02:32:13,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2021-10-11 02:32:13,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-10-11 02:32:13,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 122 transitions. [2021-10-11 02:32:13,969 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 122 transitions. Word has length 17 [2021-10-11 02:32:13,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:13,969 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 122 transitions. [2021-10-11 02:32:13,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:32:13,969 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 122 transitions. [2021-10-11 02:32:13,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:32:13,970 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:13,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:13,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:32:13,970 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:13,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:13,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1364204554, now seen corresponding path program 1 times [2021-10-11 02:32:13,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:13,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525521335] [2021-10-11 02:32:13,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:32:13,999 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:32:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:32:14,020 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:32:14,043 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:32:14,044 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:32:14,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:32:14,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:32:14 BoogieIcfgContainer [2021-10-11 02:32:14,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:32:14,077 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:32:14,077 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:32:14,078 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:32:14,078 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:07" (3/4) ... [2021-10-11 02:32:14,081 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:32:14,081 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:32:14,083 INFO L168 Benchmark]: Toolchain (without parser) took 8338.10 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 90.1 MB in the beginning and 67.8 MB in the end (delta: 22.3 MB). Peak memory consumption was 75.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:14,083 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory is still 40.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:14,084 INFO L168 Benchmark]: CACSL2BoogieTranslator took 402.29 ms. Allocated memory is still 119.5 MB. Free memory was 89.8 MB in the beginning and 93.6 MB in the end (delta: -3.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:14,084 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.50 ms. Allocated memory is still 119.5 MB. Free memory was 93.6 MB in the beginning and 91.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:14,085 INFO L168 Benchmark]: Boogie Preprocessor took 84.60 ms. Allocated memory is still 119.5 MB. Free memory was 91.2 MB in the beginning and 89.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:14,086 INFO L168 Benchmark]: RCFGBuilder took 1136.50 ms. Allocated memory is still 119.5 MB. Free memory was 89.5 MB in the beginning and 96.5 MB in the end (delta: -7.0 MB). Peak memory consumption was 47.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:14,086 INFO L168 Benchmark]: TraceAbstraction took 6617.79 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 95.9 MB in the beginning and 67.8 MB in the end (delta: 28.1 MB). Peak memory consumption was 81.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:14,087 INFO L168 Benchmark]: Witness Printer took 4.12 ms. Allocated memory is still 174.1 MB. Free memory is still 67.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:14,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory is still 40.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 402.29 ms. Allocated memory is still 119.5 MB. Free memory was 89.8 MB in the beginning and 93.6 MB in the end (delta: -3.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.50 ms. Allocated memory is still 119.5 MB. Free memory was 93.6 MB in the beginning and 91.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 84.60 ms. Allocated memory is still 119.5 MB. Free memory was 91.2 MB in the beginning and 89.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1136.50 ms. Allocated memory is still 119.5 MB. Free memory was 89.5 MB in the beginning and 96.5 MB in the end (delta: -7.0 MB). Peak memory consumption was 47.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6617.79 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 95.9 MB in the beginning and 67.8 MB in the end (delta: 28.1 MB). Peak memory consumption was 81.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.12 ms. Allocated memory is still 174.1 MB. Free memory is still 67.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 102, overapproximation of bitwiseAnd at line 100. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] b = base2flt(mb, eb) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND TRUE !(cond) [L9] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 72 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 876 SDtfs, 911 SDslu, 3512 SDs, 0 SdLazy, 736 SolverSat, 131 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 474 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 8683 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:32:16,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:32:16,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:32:16,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:32:16,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:32:16,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:32:16,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:32:16,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:32:16,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:32:16,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:32:16,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:32:16,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:32:16,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:32:16,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:32:16,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:32:16,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:32:16,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:32:16,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:32:16,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:32:16,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:32:16,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:32:16,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:32:16,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:32:16,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:32:16,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:32:16,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:32:16,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:32:16,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:32:16,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:32:16,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:32:16,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:32:16,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:32:16,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:32:16,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:32:16,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:32:16,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:32:16,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:32:16,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:32:16,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:32:16,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:32:16,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:32:16,778 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:32:16,832 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:32:16,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:32:16,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:32:16,834 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:32:16,834 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:32:16,835 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:32:16,835 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:32:16,835 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:32:16,835 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:32:16,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:32:16,838 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:32:16,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:32:16,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:32:16,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:32:16,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:32:16,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:32:16,839 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:32:16,840 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:32:16,840 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:32:16,840 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:32:16,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:32:16,841 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:32:16,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:32:16,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:32:16,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:32:16,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:32:16,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:16,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:32:16,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:32:16,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:32:16,843 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:32:16,843 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:32:16,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:32:16,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:32:16,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:32:16,844 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_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2021-10-11 02:32:17,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:32:17,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:32:17,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:32:17,241 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:32:17,242 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:32:17,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-10-11 02:32:17,339 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/data/ece2074b2/98482cb3845b427d9ed33ef0b841c6a3/FLAG33fc58d4d [2021-10-11 02:32:18,033 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:32:18,035 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-10-11 02:32:18,048 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/data/ece2074b2/98482cb3845b427d9ed33ef0b841c6a3/FLAG33fc58d4d [2021-10-11 02:32:18,332 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/data/ece2074b2/98482cb3845b427d9ed33ef0b841c6a3 [2021-10-11 02:32:18,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:32:18,336 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:32:18,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:18,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:32:18,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:32:18,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:18" (1/1) ... [2021-10-11 02:32:18,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b1ab6ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:18, skipping insertion in model container [2021-10-11 02:32:18,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:18" (1/1) ... [2021-10-11 02:32:18,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:32:18,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:32:18,593 WARN L226 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_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-10-11 02:32:18,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:18,711 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:32:18,725 WARN L226 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_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-10-11 02:32:18,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:18,774 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:32:18,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:18 WrapperNode [2021-10-11 02:32:18,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:18,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:18,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:32:18,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:32:18,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:18" (1/1) ... [2021-10-11 02:32:18,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:18" (1/1) ... [2021-10-11 02:32:18,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:18,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:32:18,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:32:18,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:32:18,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:18" (1/1) ... [2021-10-11 02:32:18,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:18" (1/1) ... [2021-10-11 02:32:18,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:18" (1/1) ... [2021-10-11 02:32:18,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:18" (1/1) ... [2021-10-11 02:32:18,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:18" (1/1) ... [2021-10-11 02:32:18,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:18" (1/1) ... [2021-10-11 02:32:18,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:18" (1/1) ... [2021-10-11 02:32:18,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:32:18,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:32:18,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:32:18,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:32:18,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:18" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:18,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:32:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:32:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:32:18,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:32:19,607 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:32:19,608 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-10-11 02:32:19,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:19 BoogieIcfgContainer [2021-10-11 02:32:19,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:32:19,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:32:19,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:32:19,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:32:19,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:32:18" (1/3) ... [2021-10-11 02:32:19,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72308f23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:19, skipping insertion in model container [2021-10-11 02:32:19,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:18" (2/3) ... [2021-10-11 02:32:19,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72308f23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:19, skipping insertion in model container [2021-10-11 02:32:19,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:19" (3/3) ... [2021-10-11 02:32:19,619 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2021-10-11 02:32:19,634 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:32:19,638 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-10-11 02:32:19,650 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-11 02:32:19,677 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:32:19,678 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:32:19,678 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:32:19,678 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:32:19,678 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:32:19,679 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:32:19,679 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:32:19,679 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:32:19,696 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2021-10-11 02:32:19,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:32:19,703 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:19,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:19,704 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:19,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:19,711 INFO L82 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2021-10-11 02:32:19,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:19,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679613115] [2021-10-11 02:32:19,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:19,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:32:19,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:20,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:20,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679613115] [2021-10-11 02:32:20,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:20,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:32:20,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841528000] [2021-10-11 02:32:20,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:32:20,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:20,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:32:20,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:20,106 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 5 states. [2021-10-11 02:32:20,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:20,346 INFO L93 Difference]: Finished difference Result 231 states and 333 transitions. [2021-10-11 02:32:20,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:32:20,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-10-11 02:32:20,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:20,360 INFO L225 Difference]: With dead ends: 231 [2021-10-11 02:32:20,361 INFO L226 Difference]: Without dead ends: 139 [2021-10-11 02:32:20,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:32:20,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-11 02:32:20,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2021-10-11 02:32:20,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-10-11 02:32:20,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2021-10-11 02:32:20,415 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 15 [2021-10-11 02:32:20,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:20,416 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2021-10-11 02:32:20,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:32:20,417 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2021-10-11 02:32:20,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:32:20,419 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:20,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:20,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:32:20,640 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:20,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:20,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1518313747, now seen corresponding path program 1 times [2021-10-11 02:32:20,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:20,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950071394] [2021-10-11 02:32:20,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:20,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:32:20,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:20,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:20,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950071394] [2021-10-11 02:32:20,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:20,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:32:20,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488792352] [2021-10-11 02:32:20,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:32:20,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:20,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:32:20,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:32:20,793 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand 6 states. [2021-10-11 02:32:21,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:21,039 INFO L93 Difference]: Finished difference Result 226 states and 285 transitions. [2021-10-11 02:32:21,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 02:32:21,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2021-10-11 02:32:21,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:21,046 INFO L225 Difference]: With dead ends: 226 [2021-10-11 02:32:21,049 INFO L226 Difference]: Without dead ends: 200 [2021-10-11 02:32:21,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:32:21,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-11 02:32:21,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 119. [2021-10-11 02:32:21,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2021-10-11 02:32:21,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2021-10-11 02:32:21,067 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 19 [2021-10-11 02:32:21,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:21,068 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2021-10-11 02:32:21,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:32:21,068 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2021-10-11 02:32:21,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:32:21,070 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:21,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:21,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:32:21,277 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:21,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:21,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1395430658, now seen corresponding path program 1 times [2021-10-11 02:32:21,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:21,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451352464] [2021-10-11 02:32:21,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:21,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:32:21,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:21,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:21,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451352464] [2021-10-11 02:32:21,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:21,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:32:21,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943499315] [2021-10-11 02:32:21,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:32:21,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:21,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:32:21,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:32:21,448 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand 7 states. [2021-10-11 02:32:21,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:21,763 INFO L93 Difference]: Finished difference Result 214 states and 266 transitions. [2021-10-11 02:32:21,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 02:32:21,763 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2021-10-11 02:32:21,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:21,766 INFO L225 Difference]: With dead ends: 214 [2021-10-11 02:32:21,766 INFO L226 Difference]: Without dead ends: 185 [2021-10-11 02:32:21,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:32:21,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-10-11 02:32:21,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 108. [2021-10-11 02:32:21,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-10-11 02:32:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2021-10-11 02:32:21,781 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 19 [2021-10-11 02:32:21,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:21,781 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2021-10-11 02:32:21,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:32:21,782 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2021-10-11 02:32:21,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 02:32:21,783 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:21,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:22,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:32:22,002 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:22,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:22,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1649339140, now seen corresponding path program 1 times [2021-10-11 02:32:22,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:22,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613896429] [2021-10-11 02:32:22,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:22,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:32:22,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:22,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:22,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:22,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613896429] [2021-10-11 02:32:22,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:22,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 02:32:22,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723085097] [2021-10-11 02:32:22,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:32:22,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:22,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:32:22,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:32:22,183 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand 9 states. [2021-10-11 02:32:22,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:22,521 INFO L93 Difference]: Finished difference Result 183 states and 230 transitions. [2021-10-11 02:32:22,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:32:22,521 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2021-10-11 02:32:22,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:22,524 INFO L225 Difference]: With dead ends: 183 [2021-10-11 02:32:22,525 INFO L226 Difference]: Without dead ends: 179 [2021-10-11 02:32:22,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:32:22,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-10-11 02:32:22,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 125. [2021-10-11 02:32:22,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-10-11 02:32:22,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2021-10-11 02:32:22,560 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 23 [2021-10-11 02:32:22,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:22,561 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2021-10-11 02:32:22,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:32:22,561 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2021-10-11 02:32:22,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 02:32:22,564 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:22,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:22,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:32:22,783 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:22,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:22,784 INFO L82 PathProgramCache]: Analyzing trace with hash 207332738, now seen corresponding path program 1 times [2021-10-11 02:32:22,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:22,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66801692] [2021-10-11 02:32:22,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:22,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:32:22,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:22,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:22,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66801692] [2021-10-11 02:32:22,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:22,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:32:22,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478124397] [2021-10-11 02:32:22,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:32:22,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:22,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:32:22,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:32:22,951 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand 7 states. [2021-10-11 02:32:23,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:23,127 INFO L93 Difference]: Finished difference Result 182 states and 230 transitions. [2021-10-11 02:32:23,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:32:23,128 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2021-10-11 02:32:23,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:23,129 INFO L225 Difference]: With dead ends: 182 [2021-10-11 02:32:23,130 INFO L226 Difference]: Without dead ends: 149 [2021-10-11 02:32:23,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:32:23,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-11 02:32:23,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2021-10-11 02:32:23,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2021-10-11 02:32:23,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 156 transitions. [2021-10-11 02:32:23,139 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 156 transitions. Word has length 23 [2021-10-11 02:32:23,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:23,140 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 156 transitions. [2021-10-11 02:32:23,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:32:23,140 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 156 transitions. [2021-10-11 02:32:23,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 02:32:23,142 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:23,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:23,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:32:23,357 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:23,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:23,358 INFO L82 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2021-10-11 02:32:23,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:23,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344751643] [2021-10-11 02:32:23,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:23,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-11 02:32:23,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:23,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:23,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:23,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344751643] [2021-10-11 02:32:23,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:23,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:32:23,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431198865] [2021-10-11 02:32:23,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:32:23,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:23,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:32:23,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:32:23,498 INFO L87 Difference]: Start difference. First operand 119 states and 156 transitions. Second operand 6 states. [2021-10-11 02:32:23,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:23,774 INFO L93 Difference]: Finished difference Result 345 states and 433 transitions. [2021-10-11 02:32:23,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:32:23,775 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2021-10-11 02:32:23,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:23,777 INFO L225 Difference]: With dead ends: 345 [2021-10-11 02:32:23,777 INFO L226 Difference]: Without dead ends: 299 [2021-10-11 02:32:23,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:32:23,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-10-11 02:32:23,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 133. [2021-10-11 02:32:23,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2021-10-11 02:32:23,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 176 transitions. [2021-10-11 02:32:23,791 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 176 transitions. Word has length 23 [2021-10-11 02:32:23,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:23,792 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 176 transitions. [2021-10-11 02:32:23,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:32:23,792 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 176 transitions. [2021-10-11 02:32:23,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 02:32:23,796 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:23,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:24,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:32:24,000 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:24,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:24,001 INFO L82 PathProgramCache]: Analyzing trace with hash 84509231, now seen corresponding path program 1 times [2021-10-11 02:32:24,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:24,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700319121] [2021-10-11 02:32:24,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:24,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 02:32:24,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:24,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:24,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:24,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700319121] [2021-10-11 02:32:24,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:24,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:32:24,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939126031] [2021-10-11 02:32:24,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:32:24,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:24,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:32:24,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:32:24,194 INFO L87 Difference]: Start difference. First operand 133 states and 176 transitions. Second operand 7 states. [2021-10-11 02:32:24,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:24,634 INFO L93 Difference]: Finished difference Result 297 states and 374 transitions. [2021-10-11 02:32:24,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 02:32:24,635 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2021-10-11 02:32:24,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:24,637 INFO L225 Difference]: With dead ends: 297 [2021-10-11 02:32:24,637 INFO L226 Difference]: Without dead ends: 295 [2021-10-11 02:32:24,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:32:24,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-10-11 02:32:24,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 135. [2021-10-11 02:32:24,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2021-10-11 02:32:24,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 179 transitions. [2021-10-11 02:32:24,648 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 179 transitions. Word has length 23 [2021-10-11 02:32:24,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:24,649 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 179 transitions. [2021-10-11 02:32:24,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:32:24,649 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 179 transitions. [2021-10-11 02:32:24,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 02:32:24,650 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:24,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:24,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 02:32:24,865 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:24,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:24,866 INFO L82 PathProgramCache]: Analyzing trace with hash 66201517, now seen corresponding path program 1 times [2021-10-11 02:32:24,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:24,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422426048] [2021-10-11 02:32:24,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:24,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:32:24,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:24,978 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:32:24,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:24,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:24,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422426048] [2021-10-11 02:32:24,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:24,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:32:24,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022956553] [2021-10-11 02:32:24,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:24,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:24,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:24,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:24,998 INFO L87 Difference]: Start difference. First operand 135 states and 179 transitions. Second operand 4 states. [2021-10-11 02:32:25,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:25,132 INFO L93 Difference]: Finished difference Result 184 states and 237 transitions. [2021-10-11 02:32:25,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:32:25,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2021-10-11 02:32:25,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:25,135 INFO L225 Difference]: With dead ends: 184 [2021-10-11 02:32:25,136 INFO L226 Difference]: Without dead ends: 180 [2021-10-11 02:32:25,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:25,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-11 02:32:25,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 137. [2021-10-11 02:32:25,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2021-10-11 02:32:25,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 182 transitions. [2021-10-11 02:32:25,152 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 182 transitions. Word has length 23 [2021-10-11 02:32:25,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:25,152 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 182 transitions. [2021-10-11 02:32:25,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:25,154 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 182 transitions. [2021-10-11 02:32:25,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 02:32:25,157 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:25,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:25,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 02:32:25,369 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:25,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:25,369 INFO L82 PathProgramCache]: Analyzing trace with hash 66261099, now seen corresponding path program 1 times [2021-10-11 02:32:25,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:25,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229062455] [2021-10-11 02:32:25,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:25,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:32:25,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:25,489 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:32:25,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:25,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:25,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229062455] [2021-10-11 02:32:25,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:25,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:32:25,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259120213] [2021-10-11 02:32:25,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:25,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:25,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:25,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:25,512 INFO L87 Difference]: Start difference. First operand 137 states and 182 transitions. Second operand 4 states. [2021-10-11 02:32:25,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:25,614 INFO L93 Difference]: Finished difference Result 137 states and 182 transitions. [2021-10-11 02:32:25,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:32:25,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2021-10-11 02:32:25,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:25,621 INFO L225 Difference]: With dead ends: 137 [2021-10-11 02:32:25,622 INFO L226 Difference]: Without dead ends: 133 [2021-10-11 02:32:25,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:25,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-11 02:32:25,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2021-10-11 02:32:25,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2021-10-11 02:32:25,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 172 transitions. [2021-10-11 02:32:25,640 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 172 transitions. Word has length 23 [2021-10-11 02:32:25,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:25,641 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 172 transitions. [2021-10-11 02:32:25,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:25,641 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 172 transitions. [2021-10-11 02:32:25,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 02:32:25,643 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:25,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:25,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2021-10-11 02:32:25,863 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:25,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:25,864 INFO L82 PathProgramCache]: Analyzing trace with hash -120407082, now seen corresponding path program 1 times [2021-10-11 02:32:25,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:25,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983650759] [2021-10-11 02:32:25,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:25,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:32:25,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:26,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:26,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:26,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983650759] [2021-10-11 02:32:26,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:26,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 02:32:26,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986026314] [2021-10-11 02:32:26,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:32:26,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:26,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:32:26,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:32:26,021 INFO L87 Difference]: Start difference. First operand 129 states and 172 transitions. Second operand 9 states. [2021-10-11 02:32:26,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:26,422 INFO L93 Difference]: Finished difference Result 179 states and 224 transitions. [2021-10-11 02:32:26,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-11 02:32:26,422 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2021-10-11 02:32:26,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:26,423 INFO L225 Difference]: With dead ends: 179 [2021-10-11 02:32:26,423 INFO L226 Difference]: Without dead ends: 174 [2021-10-11 02:32:26,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-10-11 02:32:26,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-11 02:32:26,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2021-10-11 02:32:26,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2021-10-11 02:32:26,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 186 transitions. [2021-10-11 02:32:26,433 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 186 transitions. Word has length 25 [2021-10-11 02:32:26,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:26,434 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 186 transitions. [2021-10-11 02:32:26,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:32:26,434 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 186 transitions. [2021-10-11 02:32:26,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 02:32:26,434 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:26,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:26,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2021-10-11 02:32:26,654 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:26,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:26,654 INFO L82 PathProgramCache]: Analyzing trace with hash -118560040, now seen corresponding path program 1 times [2021-10-11 02:32:26,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:26,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217017815] [2021-10-11 02:32:26,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:26,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:32:26,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:26,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:26,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217017815] [2021-10-11 02:32:26,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:26,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:32:26,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836166623] [2021-10-11 02:32:26,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:32:26,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:26,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:32:26,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:26,752 INFO L87 Difference]: Start difference. First operand 142 states and 186 transitions. Second operand 5 states. [2021-10-11 02:32:26,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:26,823 INFO L93 Difference]: Finished difference Result 147 states and 190 transitions. [2021-10-11 02:32:26,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:32:26,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2021-10-11 02:32:26,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:26,824 INFO L225 Difference]: With dead ends: 147 [2021-10-11 02:32:26,825 INFO L226 Difference]: Without dead ends: 130 [2021-10-11 02:32:26,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:32:26,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-11 02:32:26,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-10-11 02:32:26,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2021-10-11 02:32:26,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 170 transitions. [2021-10-11 02:32:26,833 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 170 transitions. Word has length 25 [2021-10-11 02:32:26,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:26,833 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 170 transitions. [2021-10-11 02:32:26,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:32:26,834 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 170 transitions. [2021-10-11 02:32:26,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 02:32:26,834 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:26,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:27,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2021-10-11 02:32:27,046 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:27,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:27,046 INFO L82 PathProgramCache]: Analyzing trace with hash -390845998, now seen corresponding path program 1 times [2021-10-11 02:32:27,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:27,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463315006] [2021-10-11 02:32:27,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:32:27,134 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:32:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:32:27,189 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:32:27,256 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:32:27,256 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:32:27,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2021-10-11 02:32:27,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:32:27 BoogieIcfgContainer [2021-10-11 02:32:27,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:32:27,496 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:32:27,497 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:32:27,497 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:32:27,497 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:19" (3/4) ... [2021-10-11 02:32:27,499 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:32:27,594 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8700bdf9-a9dc-4589-872b-2739fb6ba9bd/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:32:27,594 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:32:27,596 INFO L168 Benchmark]: Toolchain (without parser) took 9258.58 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 53.4 MB in the beginning and 33.1 MB in the end (delta: 20.3 MB). Peak memory consumption was 52.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:27,596 INFO L168 Benchmark]: CDTParser took 0.82 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 50.7 MB in the end (delta: 60.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:27,597 INFO L168 Benchmark]: CACSL2BoogieTranslator took 422.72 ms. Allocated memory is still 69.2 MB. Free memory was 53.2 MB in the beginning and 50.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:27,600 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.27 ms. Allocated memory is still 69.2 MB. Free memory was 50.4 MB in the beginning and 48.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:27,600 INFO L168 Benchmark]: Boogie Preprocessor took 61.95 ms. Allocated memory is still 69.2 MB. Free memory was 48.2 MB in the beginning and 46.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:27,601 INFO L168 Benchmark]: RCFGBuilder took 716.67 ms. Allocated memory is still 69.2 MB. Free memory was 46.2 MB in the beginning and 39.0 MB in the end (delta: 7.2 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:27,601 INFO L168 Benchmark]: TraceAbstraction took 7884.23 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 38.7 MB in the beginning and 37.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:27,601 INFO L168 Benchmark]: Witness Printer took 97.69 ms. Allocated memory is still 100.7 MB. Free memory was 37.3 MB in the beginning and 33.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:27,604 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 50.7 MB in the end (delta: 60.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 422.72 ms. Allocated memory is still 69.2 MB. Free memory was 53.2 MB in the beginning and 50.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.27 ms. Allocated memory is still 69.2 MB. Free memory was 50.4 MB in the beginning and 48.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.95 ms. Allocated memory is still 69.2 MB. Free memory was 48.2 MB in the beginning and 46.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 716.67 ms. Allocated memory is still 69.2 MB. Free memory was 46.2 MB in the beginning and 39.0 MB in the end (delta: 7.2 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7884.23 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 38.7 MB in the beginning and 37.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. * Witness Printer took 97.69 ms. Allocated memory is still 100.7 MB. Free memory was 37.3 MB in the beginning and 33.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] b = base2flt(mb, eb) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND FALSE !(!(cond)) [L107] delta = ea - eb [L8] COND TRUE !(cond) [L9] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 86 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.7s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1369 SDtfs, 1753 SDslu, 5105 SDs, 0 SdLazy, 925 SolverSat, 116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 292 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 700 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 230 ConstructedInterpolants, 0 QuantifiedInterpolants, 9622 SizeOfPredicates, 58 NumberOfNonLiveVariables, 810 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...