./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.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_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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 8039b1e35b9e459b273890fa707790cd9b2d1812 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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 8039b1e35b9e459b273890fa707790cd9b2d1812 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:20:48,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:20:48,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:20:48,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:20:48,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:20:48,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:20:48,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:20:48,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:20:48,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:20:48,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:20:48,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:20:48,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:20:48,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:20:48,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:20:48,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:20:48,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:20:48,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:20:48,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:20:48,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:20:48,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:20:48,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:20:48,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:20:48,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:20:48,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:20:48,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:20:48,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:20:48,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:20:48,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:20:48,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:20:48,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:20:48,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:20:48,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:20:48,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:20:48,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:20:48,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:20:48,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:20:48,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:20:48,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:20:48,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:20:48,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:20:48,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:20:48,257 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:20:48,311 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:20:48,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:20:48,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:20:48,315 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:20:48,315 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:20:48,315 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:20:48,315 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:20:48,316 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:20:48,323 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:20:48,323 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:20:48,325 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:20:48,325 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:20:48,326 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:20:48,326 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:20:48,326 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:20:48,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:20:48,327 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:20:48,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:20:48,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:20:48,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:20:48,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:20:48,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:20:48,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:20:48,329 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:20:48,330 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:20:48,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:20:48,330 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:20:48,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:20:48,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:20:48,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:20:48,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:48,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:20:48,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:20:48,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:20:48,335 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:20:48,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:20:48,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:20:48,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:20:48,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:20:48,336 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_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8039b1e35b9e459b273890fa707790cd9b2d1812 [2021-10-11 02:20:48,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:20:48,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:20:48,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:20:48,673 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:20:48,674 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:20:48,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-10-11 02:20:48,743 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/data/cca61789d/ae26d7cce77644a19f1a25d002babba9/FLAG1798a5061 [2021-10-11 02:20:49,375 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:20:49,375 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-10-11 02:20:49,383 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/data/cca61789d/ae26d7cce77644a19f1a25d002babba9/FLAG1798a5061 [2021-10-11 02:20:49,695 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/data/cca61789d/ae26d7cce77644a19f1a25d002babba9 [2021-10-11 02:20:49,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:20:49,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:20:49,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:49,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:20:49,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:20:49,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:49" (1/1) ... [2021-10-11 02:20:49,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12cda134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:49, skipping insertion in model container [2021-10-11 02:20:49,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:49" (1/1) ... [2021-10-11 02:20:49,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:20:49,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:20:49,984 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_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-10-11 02:20:49,990 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_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-10-11 02:20:49,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:50,004 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:20:50,032 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_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-10-11 02:20:50,034 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_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-10-11 02:20:50,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:50,052 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:20:50,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:50 WrapperNode [2021-10-11 02:20:50,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:50,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:50,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:20:50,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:20:50,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:50" (1/1) ... [2021-10-11 02:20:50,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:50" (1/1) ... [2021-10-11 02:20:50,123 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:50,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:20:50,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:20:50,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:20:50,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:50" (1/1) ... [2021-10-11 02:20:50,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:50" (1/1) ... [2021-10-11 02:20:50,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:50" (1/1) ... [2021-10-11 02:20:50,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:50" (1/1) ... [2021-10-11 02:20:50,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:50" (1/1) ... [2021-10-11 02:20:50,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:50" (1/1) ... [2021-10-11 02:20:50,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:50" (1/1) ... [2021-10-11 02:20:50,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:20:50,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:20:50,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:20:50,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:20:50,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:50" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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 02:20:50,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:20:50,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:20:50,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-11 02:20:50,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:20:50,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:20:50,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:20:50,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:20:51,356 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:20:51,357 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-11 02:20:51,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:51 BoogieIcfgContainer [2021-10-11 02:20:51,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:20:51,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:20:51,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:20:51,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:20:51,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:20:49" (1/3) ... [2021-10-11 02:20:51,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e23c022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:51, skipping insertion in model container [2021-10-11 02:20:51,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:50" (2/3) ... [2021-10-11 02:20:51,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e23c022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:51, skipping insertion in model container [2021-10-11 02:20:51,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:51" (3/3) ... [2021-10-11 02:20:51,383 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2021-10-11 02:20:51,439 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:20:51,444 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:20:51,455 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:20:51,493 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:20:51,494 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:20:51,494 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:20:51,495 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:20:51,495 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:20:51,495 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:20:51,495 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:20:51,495 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:20:51,512 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2021-10-11 02:20:51,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:20:51,517 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:51,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:51,519 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:51,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:51,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1522122412, now seen corresponding path program 1 times [2021-10-11 02:20:51,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:51,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379997412] [2021-10-11 02:20:51,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:51,789 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 02:20:51,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379997412] [2021-10-11 02:20:51,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:51,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:51,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93409371] [2021-10-11 02:20:51,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:20:51,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:51,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:20:51,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:20:51,815 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2021-10-11 02:20:51,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:51,834 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2021-10-11 02:20:51,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:20:51,835 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-10-11 02:20:51,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:51,850 INFO L225 Difference]: With dead ends: 36 [2021-10-11 02:20:51,852 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:20:51,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:20:51,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:20:51,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 02:20:51,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:20:51,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-11 02:20:51,894 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2021-10-11 02:20:51,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:51,895 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-11 02:20:51,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:20:51,895 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-11 02:20:51,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:20:51,896 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:51,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:51,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:20:51,897 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:51,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:51,901 INFO L82 PathProgramCache]: Analyzing trace with hash -2109863720, now seen corresponding path program 1 times [2021-10-11 02:20:51,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:51,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374116194] [2021-10-11 02:20:51,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:20:52,124 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:20:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:20:52,182 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:20:52,221 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:20:52,221 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:20:52,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:20:52,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:20:52 BoogieIcfgContainer [2021-10-11 02:20:52,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:20:52,274 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:20:52,275 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:20:52,276 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:20:52,277 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:51" (3/4) ... [2021-10-11 02:20:52,281 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:20:52,282 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:20:52,287 INFO L168 Benchmark]: Toolchain (without parser) took 2579.09 ms. Allocated memory was 117.4 MB in the beginning and 144.7 MB in the end (delta: 27.3 MB). Free memory was 88.1 MB in the beginning and 88.3 MB in the end (delta: -174.7 kB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:52,287 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 117.4 MB. Free memory is still 71.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:52,290 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.96 ms. Allocated memory was 117.4 MB in the beginning and 144.7 MB in the end (delta: 27.3 MB). Free memory was 87.7 MB in the beginning and 119.4 MB in the end (delta: -31.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:52,291 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.76 ms. Allocated memory is still 144.7 MB. Free memory was 119.4 MB in the beginning and 117.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:52,292 INFO L168 Benchmark]: Boogie Preprocessor took 34.99 ms. Allocated memory is still 144.7 MB. Free memory was 117.3 MB in the beginning and 115.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:52,293 INFO L168 Benchmark]: RCFGBuilder took 1213.72 ms. Allocated memory is still 144.7 MB. Free memory was 115.9 MB in the beginning and 118.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:52,295 INFO L168 Benchmark]: TraceAbstraction took 898.13 ms. Allocated memory is still 144.7 MB. Free memory was 117.6 MB in the beginning and 88.3 MB in the end (delta: 29.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:52,297 INFO L168 Benchmark]: Witness Printer took 7.83 ms. Allocated memory is still 144.7 MB. Free memory is still 88.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:52,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 117.4 MB. Free memory is still 71.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 346.96 ms. Allocated memory was 117.4 MB in the beginning and 144.7 MB in the end (delta: 27.3 MB). Free memory was 87.7 MB in the beginning and 119.4 MB in the end (delta: -31.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.76 ms. Allocated memory is still 144.7 MB. Free memory was 119.4 MB in the beginning and 117.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.99 ms. Allocated memory is still 144.7 MB. Free memory was 117.3 MB in the beginning and 115.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1213.72 ms. Allocated memory is still 144.7 MB. Free memory was 115.9 MB in the beginning and 118.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 898.13 ms. Allocated memory is still 144.7 MB. Free memory was 117.6 MB in the beginning and 88.3 MB in the end (delta: 29.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 7.83 ms. Allocated memory is still 144.7 MB. Free memory is still 88.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 77]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 76. Possible FailurePath: [L68] float x = __VERIFIER_nondet_float(); [L69] float y = __VERIFIER_nondet_float(); [L59] return x != x; [L70] EXPR isnan_float(x) && !isnan_float(y) [L70-L71] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L59] return x != x; [L71] EXPR !isnan_float(x) && isnan_float(y) [L59] return x != x; [L71] EXPR !isnan_float(x) && isnan_float(y) [L70-L71] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L70-L71] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L73] float res = fmin_float(x, y); [L59] return x != x; [L76] EXPR isnan_float(x) && !isnan_float(y) [L59] return x != x; [L76] EXPR isnan_float(x) && !isnan_float(y) [L76] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L77] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:20:55,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:20:55,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:20:55,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:20:55,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:20:55,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:20:55,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:20:55,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:20:55,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:20:55,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:20:55,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:20:55,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:20:55,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:20:55,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:20:55,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:20:55,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:20:55,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:20:55,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:20:55,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:20:55,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:20:55,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:20:55,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:20:55,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:20:55,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:20:55,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:20:55,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:20:55,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:20:55,189 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:20:55,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:20:55,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:20:55,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:20:55,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:20:55,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:20:55,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:20:55,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:20:55,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:20:55,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:20:55,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:20:55,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:20:55,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:20:55,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:20:55,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:20:55,237 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:20:55,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:20:55,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:20:55,240 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:20:55,240 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:20:55,240 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:20:55,240 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:20:55,241 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:20:55,241 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:20:55,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:20:55,243 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:20:55,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:20:55,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:20:55,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:20:55,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:20:55,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:20:55,244 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:20:55,245 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:20:55,245 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:20:55,245 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:20:55,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:20:55,246 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:20:55,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:20:55,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:20:55,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:20:55,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:20:55,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:55,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:20:55,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:20:55,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:20:55,248 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:20:55,248 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:20:55,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:20:55,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:20:55,249 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:20:55,249 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_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8039b1e35b9e459b273890fa707790cd9b2d1812 [2021-10-11 02:20:55,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:20:55,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:20:55,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:20:55,668 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:20:55,668 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:20:55,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-10-11 02:20:55,737 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/data/69e5e6543/a1f694e5ceb1402286af375e5f265b39/FLAG656744373 [2021-10-11 02:20:56,302 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:20:56,302 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-10-11 02:20:56,312 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/data/69e5e6543/a1f694e5ceb1402286af375e5f265b39/FLAG656744373 [2021-10-11 02:20:56,678 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/data/69e5e6543/a1f694e5ceb1402286af375e5f265b39 [2021-10-11 02:20:56,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:20:56,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:20:56,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:56,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:20:56,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:20:56,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:56" (1/1) ... [2021-10-11 02:20:56,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@146bca94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:56, skipping insertion in model container [2021-10-11 02:20:56,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:56" (1/1) ... [2021-10-11 02:20:56,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:20:56,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:20:56,896 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_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-10-11 02:20:56,899 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_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-10-11 02:20:56,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:56,912 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:20:56,936 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_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-10-11 02:20:56,940 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_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-10-11 02:20:56,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:56,964 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:20:56,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:56 WrapperNode [2021-10-11 02:20:56,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:56,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:56,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:20:56,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:20:56,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:56" (1/1) ... [2021-10-11 02:20:56,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:56" (1/1) ... [2021-10-11 02:20:57,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:57,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:20:57,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:20:57,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:20:57,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:56" (1/1) ... [2021-10-11 02:20:57,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:56" (1/1) ... [2021-10-11 02:20:57,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:56" (1/1) ... [2021-10-11 02:20:57,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:56" (1/1) ... [2021-10-11 02:20:57,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:56" (1/1) ... [2021-10-11 02:20:57,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:56" (1/1) ... [2021-10-11 02:20:57,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:56" (1/1) ... [2021-10-11 02:20:57,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:20:57,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:20:57,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:20:57,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:20:57,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:56" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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 02:20:57,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:20:57,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:20:57,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 02:20:57,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:20:57,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:20:57,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-11 02:20:57,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:20:57,762 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:20:57,762 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-11 02:20:57,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:57 BoogieIcfgContainer [2021-10-11 02:20:57,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:20:57,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:20:57,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:20:57,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:20:57,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:20:56" (1/3) ... [2021-10-11 02:20:57,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169c58f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:57, skipping insertion in model container [2021-10-11 02:20:57,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:56" (2/3) ... [2021-10-11 02:20:57,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169c58f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:57, skipping insertion in model container [2021-10-11 02:20:57,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:57" (3/3) ... [2021-10-11 02:20:57,776 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2021-10-11 02:20:57,790 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:20:57,794 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:20:57,804 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:20:57,842 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:20:57,842 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:20:57,843 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:20:57,843 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:20:57,843 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:20:57,843 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:20:57,843 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:20:57,844 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:20:57,858 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2021-10-11 02:20:57,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:20:57,869 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:57,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:57,870 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:57,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:57,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2021-10-11 02:20:57,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:20:57,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187408355] [2021-10-11 02:20:57,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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 02:20:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:58,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:20:58,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:58,140 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 02:20:58,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:20:58,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187408355] [2021-10-11 02:20:58,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:58,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:58,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186336660] [2021-10-11 02:20:58,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:20:58,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:20:58,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:20:58,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:20:58,164 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2021-10-11 02:20:58,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:58,199 INFO L93 Difference]: Finished difference Result 82 states and 122 transitions. [2021-10-11 02:20:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:20:58,201 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2021-10-11 02:20:58,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:58,211 INFO L225 Difference]: With dead ends: 82 [2021-10-11 02:20:58,211 INFO L226 Difference]: Without dead ends: 43 [2021-10-11 02:20:58,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:20:58,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-11 02:20:58,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-11 02:20:58,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-10-11 02:20:58,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2021-10-11 02:20:58,258 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 16 [2021-10-11 02:20:58,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:58,259 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2021-10-11 02:20:58,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:20:58,259 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2021-10-11 02:20:58,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:20:58,261 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:58,262 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 02:20:58,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:20:58,482 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:58,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:58,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1262247077, now seen corresponding path program 1 times [2021-10-11 02:20:58,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:20:58,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744205039] [2021-10-11 02:20:58,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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 02:20:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:58,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:20:58,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:58,681 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 02:20:58,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:20:58,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744205039] [2021-10-11 02:20:58,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:58,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:20:58,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769135703] [2021-10-11 02:20:58,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:58,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:20:58,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:58,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:58,686 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand 4 states. [2021-10-11 02:20:58,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:58,795 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2021-10-11 02:20:58,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:20:58,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2021-10-11 02:20:58,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:58,798 INFO L225 Difference]: With dead ends: 82 [2021-10-11 02:20:58,798 INFO L226 Difference]: Without dead ends: 50 [2021-10-11 02:20:58,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 02:20:58,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-11 02:20:58,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-10-11 02:20:58,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-10-11 02:20:58,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2021-10-11 02:20:58,816 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 17 [2021-10-11 02:20:58,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:58,819 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2021-10-11 02:20:58,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:20:58,820 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2021-10-11 02:20:58,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:20:58,820 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:58,821 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 02:20:59,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:20:59,044 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:59,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:59,045 INFO L82 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2021-10-11 02:20:59,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:20:59,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922326423] [2021-10-11 02:20:59,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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 02:20:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:59,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:20:59,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:59,155 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 02:20:59,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:20:59,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922326423] [2021-10-11 02:20:59,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:59,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:20:59,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170233291] [2021-10-11 02:20:59,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:59,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:20:59,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:59,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:59,158 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand 4 states. [2021-10-11 02:20:59,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:59,205 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2021-10-11 02:20:59,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:20:59,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2021-10-11 02:20:59,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:59,207 INFO L225 Difference]: With dead ends: 77 [2021-10-11 02:20:59,207 INFO L226 Difference]: Without dead ends: 64 [2021-10-11 02:20:59,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 02:20:59,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-11 02:20:59,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2021-10-11 02:20:59,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 02:20:59,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-10-11 02:20:59,214 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2021-10-11 02:20:59,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:59,214 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-10-11 02:20:59,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:20:59,214 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-10-11 02:20:59,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:20:59,215 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:59,216 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 02:20:59,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:20:59,439 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:59,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:59,440 INFO L82 PathProgramCache]: Analyzing trace with hash -674173253, now seen corresponding path program 1 times [2021-10-11 02:20:59,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:20:59,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [969689805] [2021-10-11 02:20:59,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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 02:20:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:59,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:20:59,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:59,553 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 02:20:59,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:20:59,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [969689805] [2021-10-11 02:20:59,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:59,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:20:59,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522778957] [2021-10-11 02:20:59,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:59,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:20:59,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:59,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:59,556 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 4 states. [2021-10-11 02:20:59,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:59,627 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2021-10-11 02:20:59,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:20:59,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-10-11 02:20:59,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:59,629 INFO L225 Difference]: With dead ends: 79 [2021-10-11 02:20:59,630 INFO L226 Difference]: Without dead ends: 66 [2021-10-11 02:20:59,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 02:20:59,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-11 02:20:59,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2021-10-11 02:20:59,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 02:20:59,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-10-11 02:20:59,640 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2021-10-11 02:20:59,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:59,642 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-10-11 02:20:59,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:20:59,643 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-10-11 02:20:59,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 02:20:59,644 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:59,644 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] [2021-10-11 02:20:59,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:20:59,846 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:59,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:59,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1345927737, now seen corresponding path program 1 times [2021-10-11 02:20:59,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:20:59,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072402126] [2021-10-11 02:20:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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 02:20:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:59,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:20:59,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:59,958 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 02:20:59,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:20:59,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072402126] [2021-10-11 02:20:59,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:59,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:20:59,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888784840] [2021-10-11 02:20:59,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:59,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:20:59,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:59,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:59,964 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 4 states. [2021-10-11 02:21:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:00,036 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2021-10-11 02:21:00,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:00,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2021-10-11 02:21:00,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:00,038 INFO L225 Difference]: With dead ends: 79 [2021-10-11 02:21:00,039 INFO L226 Difference]: Without dead ends: 66 [2021-10-11 02:21:00,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 02:21:00,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-11 02:21:00,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2021-10-11 02:21:00,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 02:21:00,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-10-11 02:21:00,051 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 20 [2021-10-11 02:21:00,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:00,051 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-10-11 02:21:00,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:00,051 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-10-11 02:21:00,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:21:00,052 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:00,052 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] [2021-10-11 02:21:00,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:21:00,269 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:00,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:00,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2021-10-11 02:21:00,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:00,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151725413] [2021-10-11 02:21:00,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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 02:21:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:00,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 02:21:00,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:00,398 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:21:00,417 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:00,529 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 02:21:00,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:00,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151725413] [2021-10-11 02:21:00,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:00,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:21:00,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301305676] [2021-10-11 02:21:00,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:21:00,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:00,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:21:00,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:21:00,531 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 7 states. [2021-10-11 02:21:00,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:00,892 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2021-10-11 02:21:00,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 02:21:00,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2021-10-11 02:21:00,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:00,894 INFO L225 Difference]: With dead ends: 149 [2021-10-11 02:21:00,894 INFO L226 Difference]: Without dead ends: 140 [2021-10-11 02:21:00,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:21:00,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-11 02:21:00,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2021-10-11 02:21:00,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-10-11 02:21:00,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2021-10-11 02:21:00,908 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 21 [2021-10-11 02:21:00,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:00,908 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2021-10-11 02:21:00,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:21:00,909 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2021-10-11 02:21:00,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 02:21:00,910 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:00,910 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] [2021-10-11 02:21:01,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:21:01,121 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:01,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:01,122 INFO L82 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2021-10-11 02:21:01,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:01,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866355682] [2021-10-11 02:21:01,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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 02:21:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:01,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 02:21:01,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:01,242 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:21:01,243 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:01,275 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:01,468 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 02:21:01,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:01,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866355682] [2021-10-11 02:21:01,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:01,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 02:21:01,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293115134] [2021-10-11 02:21:01,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:21:01,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:01,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:21:01,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:21:01,475 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand 9 states. [2021-10-11 02:21:02,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:02,267 INFO L93 Difference]: Finished difference Result 180 states and 237 transitions. [2021-10-11 02:21:02,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-11 02:21:02,268 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2021-10-11 02:21:02,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:02,269 INFO L225 Difference]: With dead ends: 180 [2021-10-11 02:21:02,270 INFO L226 Difference]: Without dead ends: 178 [2021-10-11 02:21:02,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-10-11 02:21:02,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-11 02:21:02,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 89. [2021-10-11 02:21:02,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-10-11 02:21:02,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2021-10-11 02:21:02,283 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 22 [2021-10-11 02:21:02,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:02,284 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2021-10-11 02:21:02,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:21:02,284 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2021-10-11 02:21:02,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 02:21:02,285 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:02,285 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 02:21:02,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 02:21:02,504 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:02,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:02,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1845695531, now seen corresponding path program 1 times [2021-10-11 02:21:02,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:02,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813250416] [2021-10-11 02:21:02,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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 02:21:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:02,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 02:21:02,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:02,622 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:21:02,622 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:02,703 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 02:21:02,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:02,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813250416] [2021-10-11 02:21:02,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:02,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:21:02,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131518106] [2021-10-11 02:21:02,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:21:02,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:02,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:21:02,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:21:02,707 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand 7 states. [2021-10-11 02:21:03,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:03,230 INFO L93 Difference]: Finished difference Result 166 states and 219 transitions. [2021-10-11 02:21:03,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 02:21:03,231 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2021-10-11 02:21:03,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:03,232 INFO L225 Difference]: With dead ends: 166 [2021-10-11 02:21:03,232 INFO L226 Difference]: Without dead ends: 131 [2021-10-11 02:21:03,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:21:03,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-11 02:21:03,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2021-10-11 02:21:03,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-10-11 02:21:03,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2021-10-11 02:21:03,253 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 23 [2021-10-11 02:21:03,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:03,255 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2021-10-11 02:21:03,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:21:03,255 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2021-10-11 02:21:03,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 02:21:03,256 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:03,256 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] [2021-10-11 02:21:03,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 02:21:03,472 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:03,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:03,473 INFO L82 PathProgramCache]: Analyzing trace with hash 156888005, now seen corresponding path program 1 times [2021-10-11 02:21:03,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:03,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241906634] [2021-10-11 02:21:03,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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 02:21:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:03,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:21:03,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:03,606 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 02:21:03,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:03,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241906634] [2021-10-11 02:21:03,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:03,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:03,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585691225] [2021-10-11 02:21:03,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:03,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:03,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:03,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:03,608 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand 4 states. [2021-10-11 02:21:03,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:03,678 INFO L93 Difference]: Finished difference Result 133 states and 170 transitions. [2021-10-11 02:21:03,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:03,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2021-10-11 02:21:03,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:03,680 INFO L225 Difference]: With dead ends: 133 [2021-10-11 02:21:03,680 INFO L226 Difference]: Without dead ends: 117 [2021-10-11 02:21:03,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 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 02:21:03,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-11 02:21:03,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 93. [2021-10-11 02:21:03,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-10-11 02:21:03,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-10-11 02:21:03,696 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2021-10-11 02:21:03,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:03,696 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-10-11 02:21:03,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:03,697 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-10-11 02:21:03,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 02:21:03,698 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:03,698 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] [2021-10-11 02:21:03,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2021-10-11 02:21:03,916 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:03,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:03,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1621213116, now seen corresponding path program 1 times [2021-10-11 02:21:03,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:03,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005234853] [2021-10-11 02:21:03,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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 02:21:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:04,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:04,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:04,043 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 02:21:04,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:04,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005234853] [2021-10-11 02:21:04,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:04,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:04,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595800327] [2021-10-11 02:21:04,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:04,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:04,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:04,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:04,046 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 3 states. [2021-10-11 02:21:04,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:04,066 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2021-10-11 02:21:04,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:04,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-10-11 02:21:04,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:04,069 INFO L225 Difference]: With dead ends: 96 [2021-10-11 02:21:04,069 INFO L226 Difference]: Without dead ends: 94 [2021-10-11 02:21:04,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:04,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-11 02:21:04,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2021-10-11 02:21:04,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-10-11 02:21:04,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-10-11 02:21:04,078 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2021-10-11 02:21:04,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:04,078 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-10-11 02:21:04,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:04,079 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-10-11 02:21:04,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 02:21:04,080 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:04,080 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 02:21:04,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2021-10-11 02:21:04,299 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:04,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:04,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1838896133, now seen corresponding path program 1 times [2021-10-11 02:21:04,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:04,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419441524] [2021-10-11 02:21:04,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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 02:21:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:04,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:21:04,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:04,411 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 02:21:04,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:04,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419441524] [2021-10-11 02:21:04,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:04,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:04,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685563057] [2021-10-11 02:21:04,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:04,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:04,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:04,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:04,413 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 4 states. [2021-10-11 02:21:04,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:04,507 INFO L93 Difference]: Finished difference Result 139 states and 176 transitions. [2021-10-11 02:21:04,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:04,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2021-10-11 02:21:04,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:04,509 INFO L225 Difference]: With dead ends: 139 [2021-10-11 02:21:04,509 INFO L226 Difference]: Without dead ends: 122 [2021-10-11 02:21:04,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 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 02:21:04,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-11 02:21:04,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 93. [2021-10-11 02:21:04,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-10-11 02:21:04,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-10-11 02:21:04,518 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 25 [2021-10-11 02:21:04,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:04,518 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-10-11 02:21:04,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:04,519 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-10-11 02:21:04,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 02:21:04,519 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:04,520 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 02:21:04,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2021-10-11 02:21:04,732 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:04,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:04,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1741974657, now seen corresponding path program 1 times [2021-10-11 02:21:04,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:04,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632760936] [2021-10-11 02:21:04,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/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 02:21:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:04,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 02:21:04,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:04,839 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:21:04,840 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:04,919 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 02:21:04,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:04,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632760936] [2021-10-11 02:21:04,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:04,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:21:04,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505247037] [2021-10-11 02:21:04,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:21:04,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:04,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:21:04,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:21:04,924 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 7 states. [2021-10-11 02:21:05,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:05,226 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2021-10-11 02:21:05,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:21:05,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2021-10-11 02:21:05,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:05,228 INFO L225 Difference]: With dead ends: 131 [2021-10-11 02:21:05,228 INFO L226 Difference]: Without dead ends: 118 [2021-10-11 02:21:05,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:21:05,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-11 02:21:05,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2021-10-11 02:21:05,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-10-11 02:21:05,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2021-10-11 02:21:05,236 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 25 [2021-10-11 02:21:05,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:05,236 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2021-10-11 02:21:05,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:21:05,236 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2021-10-11 02:21:05,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 02:21:05,237 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:05,237 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 02:21:05,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2021-10-11 02:21:05,449 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:05,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:05,450 INFO L82 PathProgramCache]: Analyzing trace with hash 839729769, now seen corresponding path program 1 times [2021-10-11 02:21:05,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:05,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915087492] [2021-10-11 02:21:05,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:05,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 02:21:05,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:05,555 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:21:05,555 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:05,624 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 02:21:05,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:05,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915087492] [2021-10-11 02:21:05,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:05,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-11 02:21:05,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495025859] [2021-10-11 02:21:05,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:21:05,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:05,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:21:05,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:21:05,626 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand 8 states. [2021-10-11 02:21:06,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:06,019 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2021-10-11 02:21:06,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 02:21:06,019 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2021-10-11 02:21:06,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:06,020 INFO L225 Difference]: With dead ends: 114 [2021-10-11 02:21:06,020 INFO L226 Difference]: Without dead ends: 78 [2021-10-11 02:21:06,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:21:06,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-11 02:21:06,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-10-11 02:21:06,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-10-11 02:21:06,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2021-10-11 02:21:06,027 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 25 [2021-10-11 02:21:06,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:06,027 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2021-10-11 02:21:06,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:21:06,027 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2021-10-11 02:21:06,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 02:21:06,028 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:06,028 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 02:21:06,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2021-10-11 02:21:06,244 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:06,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:06,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1281876129, now seen corresponding path program 1 times [2021-10-11 02:21:06,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:06,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515804828] [2021-10-11 02:21:06,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:06,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 02:21:06,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:06,360 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:21:06,360 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:06,436 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 02:21:06,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:06,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515804828] [2021-10-11 02:21:06,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:06,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:21:06,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990993743] [2021-10-11 02:21:06,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:21:06,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:06,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:21:06,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:21:06,438 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 7 states. [2021-10-11 02:21:06,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:06,687 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2021-10-11 02:21:06,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:21:06,688 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2021-10-11 02:21:06,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:06,688 INFO L225 Difference]: With dead ends: 84 [2021-10-11 02:21:06,688 INFO L226 Difference]: Without dead ends: 74 [2021-10-11 02:21:06,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:21:06,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-11 02:21:06,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-11 02:21:06,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 02:21:06,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2021-10-11 02:21:06,694 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 25 [2021-10-11 02:21:06,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:06,694 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2021-10-11 02:21:06,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:21:06,694 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2021-10-11 02:21:06,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-11 02:21:06,695 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:06,695 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, 1] [2021-10-11 02:21:06,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2021-10-11 02:21:06,908 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:06,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:06,908 INFO L82 PathProgramCache]: Analyzing trace with hash -144403189, now seen corresponding path program 1 times [2021-10-11 02:21:06,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:06,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792196899] [2021-10-11 02:21:06,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:06,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:21:06,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:07,020 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:21:07,020 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:07,078 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 02:21:07,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:07,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792196899] [2021-10-11 02:21:07,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:07,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:21:07,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891340881] [2021-10-11 02:21:07,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:21:07,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:07,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:21:07,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:07,080 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand 6 states. [2021-10-11 02:21:07,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:07,312 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2021-10-11 02:21:07,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:21:07,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2021-10-11 02:21:07,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:07,313 INFO L225 Difference]: With dead ends: 82 [2021-10-11 02:21:07,313 INFO L226 Difference]: Without dead ends: 74 [2021-10-11 02:21:07,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:21:07,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-11 02:21:07,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-11 02:21:07,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 02:21:07,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2021-10-11 02:21:07,319 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 26 [2021-10-11 02:21:07,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:07,320 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2021-10-11 02:21:07,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:21:07,320 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2021-10-11 02:21:07,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-11 02:21:07,320 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:07,321 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, 1] [2021-10-11 02:21:07,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2021-10-11 02:21:07,533 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:07,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:07,533 INFO L82 PathProgramCache]: Analyzing trace with hash -953749815, now seen corresponding path program 1 times [2021-10-11 02:21:07,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:07,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873703450] [2021-10-11 02:21:07,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:07,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 02:21:07,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:07,828 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2021-10-11 02:21:07,828 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:07,942 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 02:21:07,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:07,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873703450] [2021-10-11 02:21:07,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:07,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 02:21:07,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676832109] [2021-10-11 02:21:07,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:21:07,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:07,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:21:07,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:21:07,945 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 9 states. [2021-10-11 02:21:08,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:08,650 INFO L93 Difference]: Finished difference Result 120 states and 136 transitions. [2021-10-11 02:21:08,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:21:08,651 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2021-10-11 02:21:08,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:08,652 INFO L225 Difference]: With dead ends: 120 [2021-10-11 02:21:08,652 INFO L226 Difference]: Without dead ends: 109 [2021-10-11 02:21:08,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:21:08,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-11 02:21:08,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 74. [2021-10-11 02:21:08,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 02:21:08,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2021-10-11 02:21:08,659 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 26 [2021-10-11 02:21:08,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:08,660 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2021-10-11 02:21:08,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:21:08,660 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2021-10-11 02:21:08,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-11 02:21:08,660 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:08,661 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, 1] [2021-10-11 02:21:08,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2021-10-11 02:21:08,873 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:08,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:08,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1994202826, now seen corresponding path program 1 times [2021-10-11 02:21:08,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:08,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27346702] [2021-10-11 02:21:08,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:08,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:21:08,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:08,980 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 02:21:08,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:08,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27346702] [2021-10-11 02:21:08,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:08,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:08,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280403757] [2021-10-11 02:21:08,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:08,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:08,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:08,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:08,982 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand 4 states. [2021-10-11 02:21:09,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:09,032 INFO L93 Difference]: Finished difference Result 120 states and 137 transitions. [2021-10-11 02:21:09,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:09,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2021-10-11 02:21:09,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:09,034 INFO L225 Difference]: With dead ends: 120 [2021-10-11 02:21:09,034 INFO L226 Difference]: Without dead ends: 103 [2021-10-11 02:21:09,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 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 02:21:09,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-11 02:21:09,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 74. [2021-10-11 02:21:09,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 02:21:09,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2021-10-11 02:21:09,042 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 26 [2021-10-11 02:21:09,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:09,043 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2021-10-11 02:21:09,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:09,044 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2021-10-11 02:21:09,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-11 02:21:09,045 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:09,045 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, 1, 1] [2021-10-11 02:21:09,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2021-10-11 02:21:09,258 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:09,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:09,259 INFO L82 PathProgramCache]: Analyzing trace with hash 548357897, now seen corresponding path program 1 times [2021-10-11 02:21:09,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:09,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742967220] [2021-10-11 02:21:09,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:09,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 02:21:09,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:09,388 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:21:09,389 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:09,414 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:09,622 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 02:21:09,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:09,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742967220] [2021-10-11 02:21:09,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:09,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-11 02:21:09,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66861592] [2021-10-11 02:21:09,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:21:09,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:09,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:21:09,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:21:09,627 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand 10 states. [2021-10-11 02:21:10,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:10,342 INFO L93 Difference]: Finished difference Result 81 states and 98 transitions. [2021-10-11 02:21:10,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 02:21:10,343 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2021-10-11 02:21:10,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:10,343 INFO L225 Difference]: With dead ends: 81 [2021-10-11 02:21:10,344 INFO L226 Difference]: Without dead ends: 70 [2021-10-11 02:21:10,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-10-11 02:21:10,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-11 02:21:10,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-11 02:21:10,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-10-11 02:21:10,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2021-10-11 02:21:10,350 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 27 [2021-10-11 02:21:10,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:10,351 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2021-10-11 02:21:10,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:21:10,351 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2021-10-11 02:21:10,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-11 02:21:10,351 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:10,351 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, 1, 1] [2021-10-11 02:21:10,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2021-10-11 02:21:10,564 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:10,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:10,564 INFO L82 PathProgramCache]: Analyzing trace with hash 2066405290, now seen corresponding path program 1 times [2021-10-11 02:21:10,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:10,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291157451] [2021-10-11 02:21:10,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:10,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:21:10,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:10,724 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 02:21:10,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:10,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291157451] [2021-10-11 02:21:10,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:10,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:10,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930336591] [2021-10-11 02:21:10,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:10,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:10,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:10,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:10,727 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand 4 states. [2021-10-11 02:21:10,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:10,785 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2021-10-11 02:21:10,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:10,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2021-10-11 02:21:10,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:10,786 INFO L225 Difference]: With dead ends: 107 [2021-10-11 02:21:10,786 INFO L226 Difference]: Without dead ends: 88 [2021-10-11 02:21:10,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 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 02:21:10,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-11 02:21:10,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 70. [2021-10-11 02:21:10,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-10-11 02:21:10,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2021-10-11 02:21:10,795 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 27 [2021-10-11 02:21:10,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:10,795 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2021-10-11 02:21:10,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:10,796 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2021-10-11 02:21:10,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-11 02:21:10,796 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:10,796 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, 1, 1, 1, 1] [2021-10-11 02:21:11,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2021-10-11 02:21:11,009 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:11,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:11,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1548503636, now seen corresponding path program 1 times [2021-10-11 02:21:11,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:11,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339723085] [2021-10-11 02:21:11,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 21 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:11,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-11 02:21:11,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:11,113 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:21:11,114 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:11,133 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:11,418 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 02:21:11,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:11,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339723085] [2021-10-11 02:21:11,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:11,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-11 02:21:11,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513644156] [2021-10-11 02:21:11,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 02:21:11,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:11,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 02:21:11,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:21:11,420 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand 12 states. [2021-10-11 02:21:13,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:13,343 INFO L93 Difference]: Finished difference Result 193 states and 203 transitions. [2021-10-11 02:21:13,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-11 02:21:13,344 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2021-10-11 02:21:13,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:13,344 INFO L225 Difference]: With dead ends: 193 [2021-10-11 02:21:13,344 INFO L226 Difference]: Without dead ends: 158 [2021-10-11 02:21:13,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2021-10-11 02:21:13,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-11 02:21:13,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 43. [2021-10-11 02:21:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-10-11 02:21:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2021-10-11 02:21:13,352 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 27 [2021-10-11 02:21:13,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:13,352 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2021-10-11 02:21:13,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 02:21:13,352 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2021-10-11 02:21:13,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-11 02:21:13,353 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:13,353 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, 1, 1, 1] [2021-10-11 02:21:13,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 mathsat -unsat_core_generation=3 [2021-10-11 02:21:13,565 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:13,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:13,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1364791880, now seen corresponding path program 1 times [2021-10-11 02:21:13,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:13,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853914341] [2021-10-11 02:21:13,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 22 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:13,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-11 02:21:13,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:13,664 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:21:13,664 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:13,915 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 02:21:13,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:13,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853914341] [2021-10-11 02:21:13,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:13,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-11 02:21:13,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702051444] [2021-10-11 02:21:13,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:21:13,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:13,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:21:13,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:21:13,917 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 10 states. [2021-10-11 02:21:14,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:14,946 INFO L93 Difference]: Finished difference Result 135 states and 150 transitions. [2021-10-11 02:21:14,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-11 02:21:14,947 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2021-10-11 02:21:14,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:14,948 INFO L225 Difference]: With dead ends: 135 [2021-10-11 02:21:14,948 INFO L226 Difference]: Without dead ends: 111 [2021-10-11 02:21:14,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2021-10-11 02:21:14,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-11 02:21:14,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 43. [2021-10-11 02:21:14,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-10-11 02:21:14,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2021-10-11 02:21:14,954 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 28 [2021-10-11 02:21:14,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:14,954 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2021-10-11 02:21:14,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:21:14,954 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2021-10-11 02:21:14,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-11 02:21:14,955 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:14,955 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, 1, 1, 1] [2021-10-11 02:21:15,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 mathsat -unsat_core_generation=3 [2021-10-11 02:21:15,155 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:15,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:15,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1106626442, now seen corresponding path program 1 times [2021-10-11 02:21:15,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:15,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007959177] [2021-10-11 02:21:15,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 23 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:15,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:21:15,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:15,262 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 02:21:15,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:15,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007959177] [2021-10-11 02:21:15,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:15,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:15,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154696714] [2021-10-11 02:21:15,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:15,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:15,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:15,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:15,265 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2021-10-11 02:21:15,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:15,313 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2021-10-11 02:21:15,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:15,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2021-10-11 02:21:15,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:15,314 INFO L225 Difference]: With dead ends: 67 [2021-10-11 02:21:15,314 INFO L226 Difference]: Without dead ends: 57 [2021-10-11 02:21:15,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 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 02:21:15,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-11 02:21:15,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2021-10-11 02:21:15,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-10-11 02:21:15,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-10-11 02:21:15,321 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2021-10-11 02:21:15,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:15,321 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-10-11 02:21:15,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-10-11 02:21:15,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-11 02:21:15,322 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:15,322 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:15,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 mathsat -unsat_core_generation=3 [2021-10-11 02:21:15,535 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:15,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:15,535 INFO L82 PathProgramCache]: Analyzing trace with hash 430789518, now seen corresponding path program 1 times [2021-10-11 02:21:15,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:15,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289118985] [2021-10-11 02:21:15,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 24 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:15,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 02:21:15,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:15,630 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:21:15,630 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:15,646 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:15,694 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 02:21:15,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:15,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289118985] [2021-10-11 02:21:15,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:15,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:21:15,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172150400] [2021-10-11 02:21:15,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:21:15,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:15,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:21:15,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:15,696 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2021-10-11 02:21:15,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:15,916 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-10-11 02:21:15,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:21:15,917 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2021-10-11 02:21:15,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:15,917 INFO L225 Difference]: With dead ends: 52 [2021-10-11 02:21:15,917 INFO L226 Difference]: Without dead ends: 41 [2021-10-11 02:21:15,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:21:15,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-11 02:21:15,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-11 02:21:15,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-10-11 02:21:15,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2021-10-11 02:21:15,923 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2021-10-11 02:21:15,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:15,923 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2021-10-11 02:21:15,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:21:15,923 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2021-10-11 02:21:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-11 02:21:15,923 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:15,923 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:16,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 mathsat -unsat_core_generation=3 [2021-10-11 02:21:16,124 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:16,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:16,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1131854096, now seen corresponding path program 1 times [2021-10-11 02:21:16,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:16,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714878888] [2021-10-11 02:21:16,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 25 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:16,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-11 02:21:16,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:16,253 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:21:16,254 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:16,276 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:16,359 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 02:21:16,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:16,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714878888] [2021-10-11 02:21:16,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:16,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-11 02:21:16,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868735811] [2021-10-11 02:21:16,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:21:16,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:16,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:21:16,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:21:16,368 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2021-10-11 02:21:16,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:16,811 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2021-10-11 02:21:16,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:21:16,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2021-10-11 02:21:16,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:16,811 INFO L225 Difference]: With dead ends: 53 [2021-10-11 02:21:16,811 INFO L226 Difference]: Without dead ends: 39 [2021-10-11 02:21:16,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:21:16,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-11 02:21:16,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-11 02:21:16,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-10-11 02:21:16,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-10-11 02:21:16,815 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2021-10-11 02:21:16,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:16,815 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-10-11 02:21:16,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:21:16,815 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-10-11 02:21:16,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-11 02:21:16,815 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:16,815 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:17,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 mathsat -unsat_core_generation=3 [2021-10-11 02:21:17,016 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:17,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:17,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1713269395, now seen corresponding path program 1 times [2021-10-11 02:21:17,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:17,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675733566] [2021-10-11 02:21:17,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 26 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:17,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 02:21:17,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:17,195 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2021-10-11 02:21:17,195 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:17,327 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 02:21:17,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:17,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675733566] [2021-10-11 02:21:17,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:17,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:21:17,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730372900] [2021-10-11 02:21:17,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:21:17,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:17,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:21:17,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:21:17,329 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 7 states. [2021-10-11 02:21:17,843 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2021-10-11 02:21:17,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:17,905 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2021-10-11 02:21:17,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:21:17,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2021-10-11 02:21:17,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:17,906 INFO L225 Difference]: With dead ends: 71 [2021-10-11 02:21:17,906 INFO L226 Difference]: Without dead ends: 61 [2021-10-11 02:21:17,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:21:17,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-11 02:21:17,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 49. [2021-10-11 02:21:17,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-10-11 02:21:17,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2021-10-11 02:21:17,910 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 33 [2021-10-11 02:21:17,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:17,910 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2021-10-11 02:21:17,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:21:17,910 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2021-10-11 02:21:17,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-11 02:21:17,910 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:17,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:18,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 mathsat -unsat_core_generation=3 [2021-10-11 02:21:18,111 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:18,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:18,111 INFO L82 PathProgramCache]: Analyzing trace with hash -26785796, now seen corresponding path program 1 times [2021-10-11 02:21:18,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:18,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071741387] [2021-10-11 02:21:18,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 27 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:18,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 02:21:18,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:18,224 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 02:21:18,224 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:21:18,359 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 02:21:18,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:18,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071741387] [2021-10-11 02:21:18,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:18,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-11 02:21:18,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814866879] [2021-10-11 02:21:18,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:21:18,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:18,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:21:18,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:21:18,362 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 8 states. [2021-10-11 02:21:18,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:18,703 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2021-10-11 02:21:18,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 02:21:18,704 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2021-10-11 02:21:18,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:18,704 INFO L225 Difference]: With dead ends: 59 [2021-10-11 02:21:18,704 INFO L226 Difference]: Without dead ends: 49 [2021-10-11 02:21:18,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:21:18,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-11 02:21:18,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2021-10-11 02:21:18,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-10-11 02:21:18,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-11 02:21:18,709 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 34 [2021-10-11 02:21:18,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:18,709 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-11 02:21:18,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:21:18,710 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-11 02:21:18,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-11 02:21:18,710 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:18,710 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:18,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 mathsat -unsat_core_generation=3 [2021-10-11 02:21:18,913 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:18,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:18,914 INFO L82 PathProgramCache]: Analyzing trace with hash 739407273, now seen corresponding path program 1 times [2021-10-11 02:21:18,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:18,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596328688] [2021-10-11 02:21:18,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 28 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:18,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:21:18,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:19,043 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 02:21:19,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:19,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596328688] [2021-10-11 02:21:19,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:19,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:19,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335828315] [2021-10-11 02:21:19,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:19,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:19,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:19,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:19,045 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2021-10-11 02:21:19,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:19,070 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-11 02:21:19,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:19,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2021-10-11 02:21:19,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:19,071 INFO L225 Difference]: With dead ends: 39 [2021-10-11 02:21:19,071 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:21:19,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 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 02:21:19,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:21:19,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:21:19,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:21:19,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:21:19,072 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-10-11 02:21:19,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:19,072 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:21:19,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:19,072 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:21:19,073 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:21:19,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 mathsat -unsat_core_generation=3 [2021-10-11 02:21:19,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:21:19,645 WARN L197 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 112 [2021-10-11 02:21:19,753 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 68 [2021-10-11 02:21:20,193 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2021-10-11 02:21:23,049 WARN L197 SmtUtils]: Spent 2.82 s on a formula simplification. DAG size of input: 111 DAG size of output: 48 [2021-10-11 02:21:23,278 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 29 [2021-10-11 02:21:23,448 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2021-10-11 02:21:23,648 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 25 [2021-10-11 02:21:23,791 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 16 [2021-10-11 02:21:24,299 WARN L197 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2021-10-11 02:21:24,457 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2021-10-11 02:21:24,869 WARN L197 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2021-10-11 02:21:24,915 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2021-10-11 02:21:24,916 INFO L262 CegarLoopResult]: For program point L77(line 77) no Hoare annotation was computed. [2021-10-11 02:21:24,916 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:21:24,916 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 02:21:24,916 INFO L262 CegarLoopResult]: For program point L28(lines 28 34) no Hoare annotation was computed. [2021-10-11 02:21:24,916 INFO L262 CegarLoopResult]: For program point L28-1(lines 28 34) no Hoare annotation was computed. [2021-10-11 02:21:24,916 INFO L262 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2021-10-11 02:21:24,916 INFO L262 CegarLoopResult]: For program point L70-2(line 70) no Hoare annotation was computed. [2021-10-11 02:21:24,916 INFO L262 CegarLoopResult]: For program point L70-3(lines 70 71) no Hoare annotation was computed. [2021-10-11 02:21:24,916 INFO L262 CegarLoopResult]: For program point L70-5(lines 70 86) no Hoare annotation was computed. [2021-10-11 02:21:24,916 INFO L262 CegarLoopResult]: For program point L70-7(lines 70 86) no Hoare annotation was computed. [2021-10-11 02:21:24,916 INFO L262 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2021-10-11 02:21:24,916 INFO L262 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2021-10-11 02:21:24,916 INFO L262 CegarLoopResult]: For program point L71-2(line 71) no Hoare annotation was computed. [2021-10-11 02:21:24,916 INFO L265 CegarLoopResult]: At program point L88(lines 61 89) the Hoare annotation is: true [2021-10-11 02:21:24,916 INFO L262 CegarLoopResult]: For program point L31(lines 31 34) no Hoare annotation was computed. [2021-10-11 02:21:24,916 INFO L262 CegarLoopResult]: For program point L31-1(lines 31 34) no Hoare annotation was computed. [2021-10-11 02:21:24,917 INFO L262 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-10-11 02:21:24,917 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 02:21:24,917 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 77) no Hoare annotation was computed. [2021-10-11 02:21:24,917 INFO L262 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2021-10-11 02:21:24,917 INFO L262 CegarLoopResult]: For program point L82-2(lines 82 85) no Hoare annotation was computed. [2021-10-11 02:21:24,917 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:21:24,918 INFO L262 CegarLoopResult]: For program point L25(lines 25 34) no Hoare annotation was computed. [2021-10-11 02:21:24,918 INFO L262 CegarLoopResult]: For program point L25-1(lines 25 34) no Hoare annotation was computed. [2021-10-11 02:21:24,918 INFO L262 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2021-10-11 02:21:24,918 INFO L262 CegarLoopResult]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2021-10-11 02:21:24,918 INFO L258 CegarLoopResult]: At program point L17-2(lines 17 21) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not .cse1)) (and .cse0 (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) .cse1 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start___fpclassify_float_~x)))) [2021-10-11 02:21:24,918 INFO L262 CegarLoopResult]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2021-10-11 02:21:24,918 INFO L262 CegarLoopResult]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2021-10-11 02:21:24,918 INFO L258 CegarLoopResult]: At program point L17-6(lines 17 21) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse0 (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) .cse1 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) (and (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) .cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not .cse1)))) [2021-10-11 02:21:24,919 INFO L262 CegarLoopResult]: For program point L17-7(lines 14 35) no Hoare annotation was computed. [2021-10-11 02:21:24,919 INFO L258 CegarLoopResult]: At program point L34(lines 14 35) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0))) (or (and .cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (let ((.cse1 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (and (= ULTIMATE.start_fmin_float_~x .cse1) (let ((.cse2 (fp.eq .cse1 .cse1))) (or (and (not (= (bvadd ULTIMATE.start___fpclassify_float_~w~0 (_ bv2147483648 32)) (_ bv0 32))) (= (_ bv1 32) |ULTIMATE.start___fpclassify_float_#res|) .cse0 (not (bvule ULTIMATE.start___fpclassify_float_~w~0 (_ bv2139095039 32))) (or (not (bvuge ULTIMATE.start___fpclassify_float_~w~0 (_ bv2147483649 32))) (not (bvule ULTIMATE.start___fpclassify_float_~w~0 (_ bv2155872255 32)))) (or (not (bvuge ULTIMATE.start___fpclassify_float_~w~0 (_ bv2155872256 32))) (not (bvule ULTIMATE.start___fpclassify_float_~w~0 (_ bv4286578687 32)))) .cse2) (and .cse0 (or (= (_ bv3 32) |ULTIMATE.start___fpclassify_float_#res|) (= (_ bv4 32) |ULTIMATE.start___fpclassify_float_#res|) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|)) .cse2))) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start___fpclassify_float_~x))))) [2021-10-11 02:21:24,919 INFO L258 CegarLoopResult]: At program point L34-1(lines 14 35) the Hoare annotation is: (let ((.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (let ((.cse3 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|)) (.cse8 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x)) (.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse5 (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x))) (.cse6 (not .cse1)) (.cse7 (or (= (_ bv4 32) |ULTIMATE.start___fpclassify_float_#res|) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|))) (.cse2 (= ULTIMATE.start_fmin_float_~y (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))))) (or (and (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse0 (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) .cse1 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|) .cse2) (and .cse3 (or (and .cse4 .cse0 .cse5 .cse6 .cse7 .cse2) (and (= (_ bv3 32) |ULTIMATE.start___fpclassify_float_#res|) .cse4 .cse0 .cse5 .cse6 .cse2)) .cse8) (and (= (_ bv1 32) |ULTIMATE.start___fpclassify_float_#res|) .cse4 .cse0 .cse3 .cse5 .cse8 .cse6 .cse2) (and .cse4 .cse0 (or (= ULTIMATE.start_fmin_float_~y (fp (_ bv0 1) (_ bv0 8) (_ bv0 23))) (= ULTIMATE.start_fmin_float_~y (fp (_ bv1 1) (_ bv0 8) (_ bv0 23)))) .cse5 .cse6 .cse7 .cse2)))) [2021-10-11 02:21:24,920 INFO L258 CegarLoopResult]: At program point L59(line 59) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) [2021-10-11 02:21:24,920 INFO L258 CegarLoopResult]: At program point L59-1(line 59) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short16| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) [2021-10-11 02:21:24,920 INFO L258 CegarLoopResult]: At program point L59-2(line 59) the Hoare annotation is: (let ((.cse0 (not |ULTIMATE.start_main_#t~short20|)) (.cse1 (not |ULTIMATE.start_main_#t~short16|)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (not .cse2)) (and .cse0 .cse1 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse2))) [2021-10-11 02:21:24,920 INFO L258 CegarLoopResult]: At program point L59-3(line 59) the Hoare annotation is: (and (not |ULTIMATE.start_main_#t~short20|) (not |ULTIMATE.start_main_#t~short16|) |ULTIMATE.start_main_#t~short19| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) [2021-10-11 02:21:24,920 INFO L258 CegarLoopResult]: At program point L59-4(line 59) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse1 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~x~0 |ULTIMATE.start_fmin_float_#res|) .cse2 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) (and (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not .cse2)))) [2021-10-11 02:21:24,921 INFO L258 CegarLoopResult]: At program point L59-5(line 59) the Hoare annotation is: (and (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) |ULTIMATE.start_main_#t~short24| (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) [2021-10-11 02:21:24,921 INFO L258 CegarLoopResult]: At program point L59-6(line 59) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)) (and (not (let ((.cse1 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse1 .cse1))) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~x~0 |ULTIMATE.start_fmin_float_#res|) .cse0 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))))) [2021-10-11 02:21:24,921 INFO L258 CegarLoopResult]: At program point L59-7(line 59) the Hoare annotation is: (and (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (= ULTIMATE.start_main_~x~0 |ULTIMATE.start_fmin_float_#res|) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2021-10-11 02:21:24,921 INFO L262 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2021-10-11 02:21:24,924 INFO L262 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2021-10-11 02:21:24,924 INFO L262 CegarLoopResult]: For program point L76-2(lines 76 79) no Hoare annotation was computed. [2021-10-11 02:21:24,924 INFO L262 CegarLoopResult]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-10-11 02:21:24,925 INFO L258 CegarLoopResult]: At program point L43-3(lines 37 44) the Hoare annotation is: (let ((.cse4 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (let ((.cse3 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (.cse0 (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|)) (.cse1 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (not .cse4))) (or (and .cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) .cse1 (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse2 (or (= (fp (_ bv0 1) (_ bv0 8) (_ bv0 23)) ULTIMATE.start_main_~y~0) (= (fp (_ bv1 1) (_ bv0 8) (_ bv0 23)) ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_fmin_float_~y .cse3)) (and (not (fp.eq .cse3 .cse3)) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse1 (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (= ULTIMATE.start_main_~x~0 |ULTIMATE.start_fmin_float_#res|) .cse4 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) (and .cse0 .cse1 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse2)))) [2021-10-11 02:21:24,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:24 BoogieIcfgContainer [2021-10-11 02:21:24,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:24,975 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:24,975 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:24,975 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:24,976 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:57" (3/4) ... [2021-10-11 02:21:24,983 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:21:24,995 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-10-11 02:21:24,996 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 02:21:24,996 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:21:24,997 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:21:25,026 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (1bv32 == \result && !~fp.eq~FLOAT(x, x)) [2021-10-11 02:21:25,027 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (aux-isnan_float(x) && !isnan_float(y)-aux && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) [2021-10-11 02:21:25,027 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) [2021-10-11 02:21:25,028 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && aux-!isnan_float(x) && isnan_float(y)-aux) && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && ~fp.eq~FLOAT(x, x) [2021-10-11 02:21:25,029 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((y == y && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((y == y && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) && x == x) [2021-10-11 02:21:25,029 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((y == y && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && (((((((!(~bvadd64(w, 2147483648bv32) == 0bv32) && 1bv32 == \result) && y == y) && !~bvule32(w, 2139095039bv32)) && (!~bvuge32(w, 2147483649bv32) || !~bvule32(w, 2155872255bv32))) && (!~bvuge32(w, 2155872256bv32) || !~bvule32(w, 4286578687bv32))) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) || ((y == y && ((3bv32 == \result || 4bv32 == \result) || 2bv32 == \result)) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))))) && x == x) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && x == x) [2021-10-11 02:21:25,030 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((y == \result && y == x) && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && (~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23) == y || ~fp~LONGDOUBLE(1bv1, 0bv8, 0bv23) == y)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && y == y) && x == x) && 1bv32 == \result) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y))) || ((((y == \result && y == y) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) [2021-10-11 02:21:25,030 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!~fp.eq~FLOAT(x, x) && y == y) && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) || (((((y == x && y == y) && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) [2021-10-11 02:21:25,031 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && y == y) && 0bv32 == \result) && x == res) && x == x) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) || (((((y == \result && y == res) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) [2021-10-11 02:21:25,031 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((!~fp.eq~FLOAT(x, x) && y == y) && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) && 0bv32 == \result) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || ((0bv32 == \result && ((((((y == x && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && (4bv32 == \result || 2bv32 == \result)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || (((((3bv32 == \result && y == x) && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])))) && ~fp.eq~FLOAT(y, y))) || (((((((1bv32 == \result && y == x) && y == y) && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) || ((((((y == x && y == y) && (y == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23) || y == ~fp~LONGDOUBLE(1bv1, 0bv8, 0bv23))) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && (4bv32 == \result || 2bv32 == \result)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) [2021-10-11 02:21:25,033 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((y == \result && y == res) && y == y) && 0bv32 == \result) && aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x) [2021-10-11 02:21:25,033 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && !~fp.eq~FLOAT(x, x)) || ((((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && y == y) && 0bv32 == \result) && x == res) && x == x) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) [2021-10-11 02:21:25,033 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == y) && !~fp.eq~FLOAT(x, x)) && x == res) && x == x) && 1bv32 == \result) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y) [2021-10-11 02:21:25,070 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db16a28-2ca8-420c-bde4-1161f0a2a7cb/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:21:25,071 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:25,072 INFO L168 Benchmark]: Toolchain (without parser) took 28389.48 ms. Allocated memory was 60.8 MB in the beginning and 111.1 MB in the end (delta: 50.3 MB). Free memory was 40.1 MB in the beginning and 84.4 MB in the end (delta: -44.3 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:25,072 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 60.8 MB. Free memory is still 41.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:25,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.94 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 28.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:25,073 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.34 ms. Allocated memory is still 60.8 MB. Free memory was 28.6 MB in the beginning and 43.4 MB in the end (delta: -14.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:25,073 INFO L168 Benchmark]: Boogie Preprocessor took 49.67 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 41.5 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:25,073 INFO L168 Benchmark]: RCFGBuilder took 654.09 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 41.5 MB in the beginning and 48.2 MB in the end (delta: -6.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:25,074 INFO L168 Benchmark]: TraceAbstraction took 27208.42 ms. Allocated memory was 73.4 MB in the beginning and 111.1 MB in the end (delta: 37.7 MB). Free memory was 47.7 MB in the beginning and 89.6 MB in the end (delta: -42.0 MB). Peak memory consumption was 58.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:25,074 INFO L168 Benchmark]: Witness Printer took 96.02 ms. Allocated memory is still 111.1 MB. Free memory was 89.6 MB in the beginning and 84.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:25,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 60.8 MB. Free memory is still 41.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.94 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 28.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.34 ms. Allocated memory is still 60.8 MB. Free memory was 28.6 MB in the beginning and 43.4 MB in the end (delta: -14.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.67 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 41.5 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 654.09 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 41.5 MB in the beginning and 48.2 MB in the end (delta: -6.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 27208.42 ms. Allocated memory was 73.4 MB in the beginning and 111.1 MB in the end (delta: 37.7 MB). Free memory was 47.7 MB in the beginning and 89.6 MB in the end (delta: -42.0 MB). Peak memory consumption was 58.1 MB. Max. memory is 16.1 GB. * Witness Printer took 96.02 ms. Allocated memory is still 111.1 MB. Free memory was 89.6 MB in the beginning and 84.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 83]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 77]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((y == y && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((y == y && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) && x == x) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (aux-isnan_float(x) && !isnan_float(y)-aux && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (1bv32 == \result && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((y == \result && y == x) && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && (~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23) == y || ~fp~LONGDOUBLE(1bv1, 0bv8, 0bv23) == y)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && y == y) && x == x) && 1bv32 == \result) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y))) || ((((y == \result && y == y) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == y) && !~fp.eq~FLOAT(x, x)) && x == res) && x == x) && 1bv32 == \result) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (1bv32 == \result && !~fp.eq~FLOAT(x, x)) || ((((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && y == y) && 0bv32 == \result) && x == res) && x == x) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((!~fp.eq~FLOAT(x, x) && y == y) && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) || (((((y == x && y == y) && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((((y == \result && y == res) && y == y) && 0bv32 == \result) && aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((!~fp.eq~FLOAT(x, x) && y == y) && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) && 0bv32 == \result) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || ((0bv32 == \result && ((((((y == x && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && (4bv32 == \result || 2bv32 == \result)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || (((((3bv32 == \result && y == x) && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])))) && ~fp.eq~FLOAT(y, y))) || (((((((1bv32 == \result && y == x) && y == y) && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) || ((((((y == x && y == y) && (y == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23) || y == ~fp~LONGDOUBLE(1bv1, 0bv8, 0bv23))) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && (4bv32 == \result || 2bv32 == \result)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && y == y) && 0bv32 == \result) && x == res) && x == x) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) || (((((y == \result && y == res) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((y == y && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && (((((((!(~bvadd64(w, 2147483648bv32) == 0bv32) && 1bv32 == \result) && y == y) && !~bvule32(w, 2139095039bv32)) && (!~bvuge32(w, 2147483649bv32) || !~bvule32(w, 2155872255bv32))) && (!~bvuge32(w, 2155872256bv32) || !~bvule32(w, 4286578687bv32))) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) || ((y == y && ((3bv32 == \result || 4bv32 == \result) || 2bv32 == \result)) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))))) && x == x) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && x == x) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && aux-!isnan_float(x) && isnan_float(y)-aux) && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && ~fp.eq~FLOAT(x, x) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 47 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.4s, OverallIterations: 27, TraceHistogramMax: 1, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1674 SDtfs, 1873 SDslu, 4718 SDs, 0 SdLazy, 1815 SolverSat, 198 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 785 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 27 MinimizatonAttempts, 644 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 14 PreInvPairs, 49 NumberOfFragments, 751 HoareAnnotationTreeSize, 14 FomulaSimplifications, 7528113 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 14 FomulaSimplificationsInter, 38416 FormulaSimplificationTreeSizeReductionInter, 4.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 685 NumberOfCodeBlocks, 685 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 658 ConstructedInterpolants, 0 QuantifiedInterpolants, 67978 SizeOfPredicates, 166 NumberOfNonLiveVariables, 2360 ConjunctsInSsa, 230 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 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 correct! Received shutdown request...