./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan --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 83c30cf69d350d7f7844d9a61780744d2d19365f .......................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan --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 83c30cf69d350d7f7844d9a61780744d2d19365f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:42:18,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:42:18,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:42:18,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:42:18,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:42:18,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:42:18,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:42:18,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:42:18,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:42:18,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:42:18,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:42:18,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:42:18,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:42:18,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:42:18,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:42:18,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:42:18,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:42:18,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:42:18,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:42:18,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:42:18,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:42:18,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:42:18,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:42:18,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:42:18,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:42:18,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:42:18,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:42:18,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:42:18,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:42:18,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:42:18,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:42:18,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:42:18,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:42:18,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:42:18,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:42:18,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:42:18,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:42:18,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:42:18,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:42:18,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:42:18,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:42:18,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 01:42:18,237 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:42:18,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:42:18,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:42:18,239 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:42:18,240 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:42:18,240 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:42:18,240 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:42:18,240 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:42:18,240 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:42:18,240 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:42:18,242 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:42:18,242 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:42:18,243 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:42:18,243 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:42:18,243 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:42:18,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:42:18,245 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:42:18,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:42:18,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:42:18,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:42:18,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:42:18,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:42:18,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:42:18,254 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:42:18,254 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:42:18,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:42:18,254 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:42:18,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:42:18,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:42:18,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:42:18,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:42:18,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:42:18,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:42:18,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:42:18,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:42:18,258 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:42:18,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:42:18,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:42:18,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:42:18,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:42:18,259 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-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c30cf69d350d7f7844d9a61780744d2d19365f [2020-11-30 01:42:18,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:42:18,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:42:18,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:42:18,578 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:42:18,579 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:42:18,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2020-11-30 01:42:18,649 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/data/144e75c44/2e3dcbafb8f6492293f988053cd09190/FLAG3b574a2be [2020-11-30 01:42:19,105 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:42:19,105 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2020-11-30 01:42:19,113 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/data/144e75c44/2e3dcbafb8f6492293f988053cd09190/FLAG3b574a2be [2020-11-30 01:42:19,128 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/data/144e75c44/2e3dcbafb8f6492293f988053cd09190 [2020-11-30 01:42:19,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:42:19,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:42:19,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:42:19,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:42:19,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:42:19,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:42:19" (1/1) ... [2020-11-30 01:42:19,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60fd92c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:19, skipping insertion in model container [2020-11-30 01:42:19,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:42:19" (1/1) ... [2020-11-30 01:42:19,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:42:19,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:42:19,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:42:19,346 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:42:19,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:42:19,401 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:42:19,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:19 WrapperNode [2020-11-30 01:42:19,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:42:19,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:42:19,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:42:19,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:42:19,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:19" (1/1) ... [2020-11-30 01:42:19,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:19" (1/1) ... [2020-11-30 01:42:19,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:42:19,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:42:19,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:42:19,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:42:19,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:19" (1/1) ... [2020-11-30 01:42:19,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:19" (1/1) ... [2020-11-30 01:42:19,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:19" (1/1) ... [2020-11-30 01:42:19,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:19" (1/1) ... [2020-11-30 01:42:19,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:19" (1/1) ... [2020-11-30 01:42:19,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:19" (1/1) ... [2020-11-30 01:42:19,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:19" (1/1) ... [2020-11-30 01:42:19,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:42:19,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:42:19,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:42:19,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:42:19,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/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 [2020-11-30 01:42:19,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:42:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:42:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-30 01:42:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:42:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 01:42:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:42:19,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:42:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:42:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:42:20,833 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:42:20,834 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 01:42:20,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:42:20 BoogieIcfgContainer [2020-11-30 01:42:20,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:42:20,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:42:20,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:42:20,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:42:20,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:42:19" (1/3) ... [2020-11-30 01:42:20,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad5cc8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:42:20, skipping insertion in model container [2020-11-30 01:42:20,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:19" (2/3) ... [2020-11-30 01:42:20,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad5cc8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:42:20, skipping insertion in model container [2020-11-30 01:42:20,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:42:20" (3/3) ... [2020-11-30 01:42:20,846 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2020-11-30 01:42:20,863 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:42:20,867 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:42:20,878 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:42:20,901 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:42:20,902 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:42:20,902 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:42:20,902 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:42:20,902 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:42:20,902 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:42:20,903 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:42:20,903 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:42:20,916 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-30 01:42:20,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:42:20,921 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:42:20,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:42:20,922 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:42:20,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:42:20,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1451113073, now seen corresponding path program 1 times [2020-11-30 01:42:20,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:42:20,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030693657] [2020-11-30 01:42:20,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:42:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:42:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:42:21,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030693657] [2020-11-30 01:42:21,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:42:21,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:42:21,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584047202] [2020-11-30 01:42:21,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:42:21,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:42:21,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:42:21,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:42:21,083 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-11-30 01:42:21,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:42:21,097 INFO L93 Difference]: Finished difference Result 53 states and 85 transitions. [2020-11-30 01:42:21,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:42:21,098 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 01:42:21,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:42:21,106 INFO L225 Difference]: With dead ends: 53 [2020-11-30 01:42:21,107 INFO L226 Difference]: Without dead ends: 25 [2020-11-30 01:42:21,109 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 [2020-11-30 01:42:21,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-30 01:42:21,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-30 01:42:21,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-30 01:42:21,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2020-11-30 01:42:21,141 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 7 [2020-11-30 01:42:21,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:42:21,141 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2020-11-30 01:42:21,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:42:21,141 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2020-11-30 01:42:21,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 01:42:21,142 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:42:21,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:42:21,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:42:21,143 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:42:21,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:42:21,143 INFO L82 PathProgramCache]: Analyzing trace with hash -237034198, now seen corresponding path program 1 times [2020-11-30 01:42:21,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:42:21,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583812250] [2020-11-30 01:42:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:42:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:42:21,182 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:42:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:42:21,209 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:42:21,232 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 01:42:21,232 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:42:21,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:42:21,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:42:21 BoogieIcfgContainer [2020-11-30 01:42:21,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:42:21,259 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:42:21,259 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:42:21,259 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:42:21,260 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:42:20" (3/4) ... [2020-11-30 01:42:21,263 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:42:21,263 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:42:21,265 INFO L168 Benchmark]: Toolchain (without parser) took 2131.92 ms. Allocated memory is still 107.0 MB. Free memory was 80.2 MB in the beginning and 68.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:42:21,265 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 73.4 MB. Free memory was 42.4 MB in the beginning and 42.4 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:42:21,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.54 ms. Allocated memory is still 107.0 MB. Free memory was 79.9 MB in the beginning and 67.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:42:21,267 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.61 ms. Allocated memory is still 107.0 MB. Free memory was 67.7 MB in the beginning and 65.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:42:21,268 INFO L168 Benchmark]: Boogie Preprocessor took 43.63 ms. Allocated memory is still 107.0 MB. Free memory was 65.5 MB in the beginning and 63.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:42:21,268 INFO L168 Benchmark]: RCFGBuilder took 1334.84 ms. Allocated memory is still 107.0 MB. Free memory was 63.5 MB in the beginning and 44.7 MB in the end (delta: 18.7 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:42:21,269 INFO L168 Benchmark]: TraceAbstraction took 420.74 ms. Allocated memory is still 107.0 MB. Free memory was 44.3 MB in the beginning and 68.7 MB in the end (delta: -24.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:42:21,269 INFO L168 Benchmark]: Witness Printer took 3.89 ms. Allocated memory is still 107.0 MB. Free memory was 68.7 MB in the beginning and 68.4 MB in the end (delta: 284.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:42:21,273 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 73.4 MB. Free memory was 42.4 MB in the beginning and 42.4 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 268.54 ms. Allocated memory is still 107.0 MB. Free memory was 79.9 MB in the beginning and 67.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.61 ms. Allocated memory is still 107.0 MB. Free memory was 67.7 MB in the beginning and 65.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.63 ms. Allocated memory is still 107.0 MB. Free memory was 65.5 MB in the beginning and 63.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1334.84 ms. Allocated memory is still 107.0 MB. Free memory was 63.5 MB in the beginning and 44.7 MB in the end (delta: 18.7 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 420.74 ms. Allocated memory is still 107.0 MB. Free memory was 44.3 MB in the beginning and 68.7 MB in the end (delta: -24.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.89 ms. Allocated memory is still 107.0 MB. Free memory was 68.7 MB in the beginning and 68.4 MB in the end (delta: 284.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 155, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L151] double x = 0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L155] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_0730c.c", 3, "reach_error") VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 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=27occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 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-a4ecdab [2020-11-30 01:42:23,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:42:23,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:42:23,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:42:23,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:42:23,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:42:23,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:42:23,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:42:23,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:42:23,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:42:23,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:42:23,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:42:23,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:42:23,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:42:23,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:42:23,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:42:23,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:42:23,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:42:23,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:42:23,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:42:23,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:42:23,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:42:23,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:42:23,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:42:23,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-30 01:42:23,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:42:23,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:42:23,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:42:23,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:42:23,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:42:23,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:42:23,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:42:23,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:42:23,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:42:23,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:42:23,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:42:23,697 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 01:42:23,741 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:42:23,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:42:23,743 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:42:23,743 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:42:23,743 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:42:23,743 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:42:23,744 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:42:23,744 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:42:23,744 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:42:23,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:42:23,747 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:42:23,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:42:23,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:42:23,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:42:23,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:42:23,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:42:23,748 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:42:23,748 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:42:23,748 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:42:23,749 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:42:23,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:42:23,749 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:42:23,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:42:23,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:42:23,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:42:23,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:42:23,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:42:23,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:42:23,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:42:23,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:42:23,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:42:23,751 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 01:42:23,752 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:42:23,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:42:23,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:42:23,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:42:23,753 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-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c30cf69d350d7f7844d9a61780744d2d19365f [2020-11-30 01:42:24,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:42:24,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:42:24,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:42:24,185 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:42:24,187 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:42:24,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2020-11-30 01:42:24,248 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/data/a9672d803/12042158544543eaaf0b43d39fb89e4f/FLAGfe6fa08c7 [2020-11-30 01:42:24,746 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:42:24,747 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2020-11-30 01:42:24,754 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/data/a9672d803/12042158544543eaaf0b43d39fb89e4f/FLAGfe6fa08c7 [2020-11-30 01:42:25,110 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/data/a9672d803/12042158544543eaaf0b43d39fb89e4f [2020-11-30 01:42:25,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:42:25,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:42:25,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:42:25,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:42:25,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:42:25,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:42:25" (1/1) ... [2020-11-30 01:42:25,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ff13d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:25, skipping insertion in model container [2020-11-30 01:42:25,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:42:25" (1/1) ... [2020-11-30 01:42:25,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:42:25,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:42:25,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:42:25,335 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:42:25,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:42:25,452 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:42:25,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:25 WrapperNode [2020-11-30 01:42:25,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:42:25,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:42:25,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:42:25,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:42:25,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:25" (1/1) ... [2020-11-30 01:42:25,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:25" (1/1) ... [2020-11-30 01:42:25,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:42:25,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:42:25,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:42:25,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:42:25,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:25" (1/1) ... [2020-11-30 01:42:25,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:25" (1/1) ... [2020-11-30 01:42:25,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:25" (1/1) ... [2020-11-30 01:42:25,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:25" (1/1) ... [2020-11-30 01:42:25,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:25" (1/1) ... [2020-11-30 01:42:25,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:25" (1/1) ... [2020-11-30 01:42:25,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:25" (1/1) ... [2020-11-30 01:42:25,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:42:25,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:42:25,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:42:25,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:42:25,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/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 [2020-11-30 01:42:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-30 01:42:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-30 01:42:25,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:42:25,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:42:25,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 01:42:25,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:42:25,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:42:25,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 01:42:25,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:42:30,257 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:42:30,257 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 01:42:30,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:42:30 BoogieIcfgContainer [2020-11-30 01:42:30,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:42:30,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:42:30,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:42:30,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:42:30,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:42:25" (1/3) ... [2020-11-30 01:42:30,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f07a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:42:30, skipping insertion in model container [2020-11-30 01:42:30,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:42:25" (2/3) ... [2020-11-30 01:42:30,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f07a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:42:30, skipping insertion in model container [2020-11-30 01:42:30,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:42:30" (3/3) ... [2020-11-30 01:42:30,267 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2020-11-30 01:42:30,277 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:42:30,281 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:42:30,292 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:42:30,333 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:42:30,334 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:42:30,334 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:42:30,334 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:42:30,334 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:42:30,334 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:42:30,334 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:42:30,334 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:42:30,345 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-11-30 01:42:30,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 01:42:30,349 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:42:30,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:42:30,350 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:42:30,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:42:30,356 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2020-11-30 01:42:30,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:42:30,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363092362] [2020-11-30 01:42:30,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/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 [2020-11-30 01:42:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:42:30,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 01:42:30,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:42:30,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:30,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:42:30,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363092362] [2020-11-30 01:42:30,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:42:30,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 01:42:30,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441824997] [2020-11-30 01:42:30,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:42:30,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:42:30,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:42:30,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:42:30,968 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-11-30 01:42:30,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:42:31,000 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2020-11-30 01:42:31,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:42:31,002 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-30 01:42:31,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:42:31,016 INFO L225 Difference]: With dead ends: 105 [2020-11-30 01:42:31,016 INFO L226 Difference]: Without dead ends: 50 [2020-11-30 01:42:31,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:42:31,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-30 01:42:31,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-30 01:42:31,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-30 01:42:31,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2020-11-30 01:42:31,054 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2020-11-30 01:42:31,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:42:31,054 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2020-11-30 01:42:31,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:42:31,054 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-11-30 01:42:31,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 01:42:31,055 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:42:31,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:42:31,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:42:31,263 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:42:31,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:42:31,264 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2020-11-30 01:42:31,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:42:31,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643524088] [2020-11-30 01:42:31,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/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 [2020-11-30 01:42:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:42:31,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 01:42:31,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:31,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:42:31,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:31,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:42:31,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643524088] [2020-11-30 01:42:31,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:42:31,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:42:31,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987898356] [2020-11-30 01:42:31,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:42:31,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:42:31,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:42:31,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:42:31,841 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand 6 states. [2020-11-30 01:42:33,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:42:33,387 INFO L93 Difference]: Finished difference Result 105 states and 142 transitions. [2020-11-30 01:42:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:42:33,389 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-11-30 01:42:33,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:42:33,390 INFO L225 Difference]: With dead ends: 105 [2020-11-30 01:42:33,391 INFO L226 Difference]: Without dead ends: 63 [2020-11-30 01:42:33,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:42:33,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-30 01:42:33,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2020-11-30 01:42:33,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-30 01:42:33,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2020-11-30 01:42:33,400 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 9 [2020-11-30 01:42:33,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:42:33,401 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2020-11-30 01:42:33,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:42:33,401 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2020-11-30 01:42:33,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:42:33,401 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:42:33,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:42:33,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 01:42:33,624 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:42:33,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:42:33,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2020-11-30 01:42:33,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:42:33,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798245282] [2020-11-30 01:42:33,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/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 [2020-11-30 01:42:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:42:33,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 01:42:33,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:33,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:42:33,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:33,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:42:33,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798245282] [2020-11-30 01:42:33,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:42:33,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-11-30 01:42:33,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341952614] [2020-11-30 01:42:33,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:42:33,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:42:33,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:42:33,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:42:33,820 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand 7 states. [2020-11-30 01:42:34,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:42:34,008 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2020-11-30 01:42:34,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:42:34,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-11-30 01:42:34,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:42:34,012 INFO L225 Difference]: With dead ends: 63 [2020-11-30 01:42:34,012 INFO L226 Difference]: Without dead ends: 60 [2020-11-30 01:42:34,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:42:34,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-30 01:42:34,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2020-11-30 01:42:34,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-30 01:42:34,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 70 transitions. [2020-11-30 01:42:34,030 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 70 transitions. Word has length 11 [2020-11-30 01:42:34,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:42:34,031 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 70 transitions. [2020-11-30 01:42:34,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:42:34,031 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 70 transitions. [2020-11-30 01:42:34,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:42:34,032 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:42:34,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:42:34,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 01:42:34,243 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:42:34,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:42:34,244 INFO L82 PathProgramCache]: Analyzing trace with hash 264903321, now seen corresponding path program 1 times [2020-11-30 01:42:34,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:42:34,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049417163] [2020-11-30 01:42:34,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/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 [2020-11-30 01:42:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:42:34,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 01:42:34,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:34,458 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:42:34,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:42:34,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:34,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:42:34,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049417163] [2020-11-30 01:42:34,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:42:34,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2020-11-30 01:42:34,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020026787] [2020-11-30 01:42:34,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-30 01:42:34,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:42:34,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-30 01:42:34,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:42:34,756 INFO L87 Difference]: Start difference. First operand 53 states and 70 transitions. Second operand 14 states. [2020-11-30 01:42:35,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:42:35,196 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2020-11-30 01:42:35,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:42:35,196 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-11-30 01:42:35,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:42:35,197 INFO L225 Difference]: With dead ends: 60 [2020-11-30 01:42:35,197 INFO L226 Difference]: Without dead ends: 51 [2020-11-30 01:42:35,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-11-30 01:42:35,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-30 01:42:35,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-30 01:42:35,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-30 01:42:35,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2020-11-30 01:42:35,204 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 15 [2020-11-30 01:42:35,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:42:35,205 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2020-11-30 01:42:35,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-30 01:42:35,205 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2020-11-30 01:42:35,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 01:42:35,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:42:35,206 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] [2020-11-30 01:42:35,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 01:42:35,407 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:42:35,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:42:35,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1807617568, now seen corresponding path program 1 times [2020-11-30 01:42:35,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:42:35,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607381383] [2020-11-30 01:42:35,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/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 [2020-11-30 01:42:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:42:35,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:42:35,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:35,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:42:35,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:42:35,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607381383] [2020-11-30 01:42:35,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:42:35,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-30 01:42:35,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945479890] [2020-11-30 01:42:35,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:42:35,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:42:35,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:42:35,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:42:35,660 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand 8 states. [2020-11-30 01:42:36,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:42:36,260 INFO L93 Difference]: Finished difference Result 87 states and 116 transitions. [2020-11-30 01:42:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:42:36,263 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-11-30 01:42:36,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:42:36,263 INFO L225 Difference]: With dead ends: 87 [2020-11-30 01:42:36,263 INFO L226 Difference]: Without dead ends: 52 [2020-11-30 01:42:36,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:42:36,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-30 01:42:36,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-11-30 01:42:36,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-30 01:42:36,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2020-11-30 01:42:36,270 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 27 [2020-11-30 01:42:36,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:42:36,270 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2020-11-30 01:42:36,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:42:36,271 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2020-11-30 01:42:36,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-30 01:42:36,272 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:42:36,272 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] [2020-11-30 01:42:36,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 01:42:36,484 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:42:36,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:42:36,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1685732611, now seen corresponding path program 1 times [2020-11-30 01:42:36,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:42:36,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934989972] [2020-11-30 01:42:36,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/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 [2020-11-30 01:42:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:42:36,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:42:36,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 01:42:36,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:36,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 01:42:36,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934989972] [2020-11-30 01:42:36,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:42:36,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 01:42:36,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566225826] [2020-11-30 01:42:36,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:42:36,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:42:36,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:42:36,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:42:36,656 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand 4 states. [2020-11-30 01:42:36,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:42:36,705 INFO L93 Difference]: Finished difference Result 84 states and 112 transitions. [2020-11-30 01:42:36,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:42:36,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-11-30 01:42:36,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:42:36,706 INFO L225 Difference]: With dead ends: 84 [2020-11-30 01:42:36,706 INFO L226 Difference]: Without dead ends: 55 [2020-11-30 01:42:36,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:42:36,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-30 01:42:36,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-30 01:42:36,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-30 01:42:36,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2020-11-30 01:42:36,713 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 32 [2020-11-30 01:42:36,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:42:36,713 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2020-11-30 01:42:36,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:42:36,714 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2020-11-30 01:42:36,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-30 01:42:36,715 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:42:36,715 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-11-30 01:42:36,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 01:42:36,923 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:42:36,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:42:36,924 INFO L82 PathProgramCache]: Analyzing trace with hash 429259843, now seen corresponding path program 1 times [2020-11-30 01:42:36,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:42:36,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385802160] [2020-11-30 01:42:36,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/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 [2020-11-30 01:42:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:42:37,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:42:37,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:37,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 01:42:37,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:37,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 01:42:37,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385802160] [2020-11-30 01:42:37,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2006882736] [2020-11-30 01:42:37,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 01:42:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:42:37,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:42:37,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:37,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 01:42:37,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 01:42:37,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:42:37,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [6, 5] total 12 [2020-11-30 01:42:37,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059074422] [2020-11-30 01:42:37,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:42:37,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:42:37,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:42:37,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:42:37,456 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand 6 states. [2020-11-30 01:42:37,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:42:37,589 INFO L93 Difference]: Finished difference Result 84 states and 111 transitions. [2020-11-30 01:42:37,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:42:37,596 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-11-30 01:42:37,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:42:37,597 INFO L225 Difference]: With dead ends: 84 [2020-11-30 01:42:37,597 INFO L226 Difference]: Without dead ends: 63 [2020-11-30 01:42:37,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:42:37,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-30 01:42:37,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-30 01:42:37,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-30 01:42:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2020-11-30 01:42:37,613 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 38 [2020-11-30 01:42:37,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:42:37,613 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2020-11-30 01:42:37,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:42:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2020-11-30 01:42:37,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-30 01:42:37,619 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:42:37,619 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2020-11-30 01:42:38,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk,8 mathsat -unsat_core_generation=3 [2020-11-30 01:42:38,020 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:42:38,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:42:38,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1564040323, now seen corresponding path program 1 times [2020-11-30 01:42:38,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:42:38,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188472294] [2020-11-30 01:42:38,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/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 [2020-11-30 01:42:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:42:38,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:42:38,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:38,235 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 01:42:38,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 01:42:38,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188472294] [2020-11-30 01:42:38,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2118977787] [2020-11-30 01:42:38,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 01:42:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:42:38,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:42:38,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:38,583 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 01:42:38,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 01:42:38,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887141072] [2020-11-30 01:42:38,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:42:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:42:38,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:42:38,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:38,710 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 01:42:38,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:38,721 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 01:42:38,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 01:42:38,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5, 5] total 9 [2020-11-30 01:42:38,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473975364] [2020-11-30 01:42:38,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:42:38,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:42:38,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:42:38,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:42:38,724 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand 9 states. [2020-11-30 01:42:38,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:42:38,889 INFO L93 Difference]: Finished difference Result 112 states and 152 transitions. [2020-11-30 01:42:38,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:42:38,890 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-11-30 01:42:38,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:42:38,891 INFO L225 Difference]: With dead ends: 112 [2020-11-30 01:42:38,891 INFO L226 Difference]: Without dead ends: 75 [2020-11-30 01:42:38,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 250 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:42:38,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-30 01:42:38,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-11-30 01:42:38,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-30 01:42:38,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2020-11-30 01:42:38,906 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 44 [2020-11-30 01:42:38,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:42:38,908 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2020-11-30 01:42:38,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:42:38,908 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2020-11-30 01:42:38,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-30 01:42:38,912 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:42:38,913 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 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] [2020-11-30 01:42:39,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 mathsat -unsat_core_generation=3,11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 01:42:39,539 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:42:39,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:42:39,540 INFO L82 PathProgramCache]: Analyzing trace with hash -229463293, now seen corresponding path program 2 times [2020-11-30 01:42:39,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:42:39,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377621600] [2020-11-30 01:42:39,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/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 [2020-11-30 01:42:39,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:42:39,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:42:39,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 01:42:39,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:40,091 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 01:42:40,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:40,650 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 01:42:40,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377621600] [2020-11-30 01:42:40,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1272786066] [2020-11-30 01:42:40,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 01:42:41,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:42:41,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:42:41,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 01:42:41,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 01:42:41,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:41,514 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 01:42:41,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634931983] [2020-11-30 01:42:41,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:42:41,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:42:41,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:42:41,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:42:41,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 01:42:42,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 01:42:42,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 01:42:42,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14, 14, 12, 9] total 44 [2020-11-30 01:42:42,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605790453] [2020-11-30 01:42:42,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-11-30 01:42:42,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:42:42,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-11-30 01:42:42,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=1462, Unknown=0, NotChecked=0, Total=1892 [2020-11-30 01:42:42,760 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand 44 states. [2020-11-30 01:42:46,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:42:46,837 INFO L93 Difference]: Finished difference Result 273 states and 375 transitions. [2020-11-30 01:42:46,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-30 01:42:46,839 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 56 [2020-11-30 01:42:46,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:42:46,840 INFO L225 Difference]: With dead ends: 273 [2020-11-30 01:42:46,840 INFO L226 Difference]: Without dead ends: 236 [2020-11-30 01:42:46,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 283 SyntacticMatches, 6 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1116, Invalid=3576, Unknown=0, NotChecked=0, Total=4692 [2020-11-30 01:42:46,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-11-30 01:42:46,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 126. [2020-11-30 01:42:46,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-11-30 01:42:46,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 171 transitions. [2020-11-30 01:42:46,860 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 171 transitions. Word has length 56 [2020-11-30 01:42:46,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:42:46,861 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 171 transitions. [2020-11-30 01:42:46,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-11-30 01:42:46,861 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 171 transitions. [2020-11-30 01:42:46,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-30 01:42:46,862 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:42:46,862 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 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] [2020-11-30 01:42:47,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3,14 cvc4 --incremental --print-success --lang smt --rewrite-divk,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:42:47,480 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:42:47,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:42:47,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1054865405, now seen corresponding path program 3 times [2020-11-30 01:42:47,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:42:47,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131615699] [2020-11-30 01:42:47,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/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 [2020-11-30 01:42:47,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-30 01:42:47,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:42:47,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:42:47,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:47,758 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-11-30 01:42:47,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-11-30 01:42:47,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131615699] [2020-11-30 01:42:47,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [746296647] [2020-11-30 01:42:47,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/cvc4 Starting monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 01:42:48,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-30 01:42:48,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:42:48,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:42:48,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:48,696 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-11-30 01:42:48,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:48,728 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-11-30 01:42:48,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914289670] [2020-11-30 01:42:48,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:42:48,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-30 01:42:48,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:42:48,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:42:48,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:48,956 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-11-30 01:42:48,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-11-30 01:42:48,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 01:42:48,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6, 6, 6, 6] total 12 [2020-11-30 01:42:48,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121467187] [2020-11-30 01:42:48,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 01:42:48,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:42:48,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 01:42:48,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:42:48,989 INFO L87 Difference]: Start difference. First operand 126 states and 171 transitions. Second operand 12 states. [2020-11-30 01:42:49,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:42:49,285 INFO L93 Difference]: Finished difference Result 211 states and 299 transitions. [2020-11-30 01:42:49,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:42:49,288 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-11-30 01:42:49,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:42:49,289 INFO L225 Difference]: With dead ends: 211 [2020-11-30 01:42:49,289 INFO L226 Difference]: Without dead ends: 182 [2020-11-30 01:42:49,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 461 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-11-30 01:42:49,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-30 01:42:49,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-11-30 01:42:49,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-11-30 01:42:49,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 251 transitions. [2020-11-30 01:42:49,308 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 251 transitions. Word has length 80 [2020-11-30 01:42:49,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:42:49,308 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 251 transitions. [2020-11-30 01:42:49,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 01:42:49,308 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 251 transitions. [2020-11-30 01:42:49,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-11-30 01:42:49,310 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:42:49,310 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 6, 6, 6, 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] [2020-11-30 01:42:49,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 01:42:49,923 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:42:49,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:42:49,924 INFO L82 PathProgramCache]: Analyzing trace with hash -696649597, now seen corresponding path program 4 times [2020-11-30 01:42:49,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:42:49,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652971469] [2020-11-30 01:42:49,924 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/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 [2020-11-30 01:42:50,098 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 01:42:50,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:42:50,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-30 01:42:50,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-11-30 01:42:50,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-11-30 01:42:51,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652971469] [2020-11-30 01:42:51,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1319366145] [2020-11-30 01:42:51,162 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/cvc4 Starting monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 01:42:51,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 01:42:51,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:42:51,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-30 01:42:51,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-11-30 01:42:51,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:51,626 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-11-30 01:42:51,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682403663] [2020-11-30 01:42:51,627 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:42:51,752 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 01:42:51,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:42:51,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-30 01:42:51,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:51,923 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-11-30 01:42:51,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:51,957 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-11-30 01:42:51,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 01:42:51,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 17, 17, 17, 17] total 36 [2020-11-30 01:42:51,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828828244] [2020-11-30 01:42:51,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-30 01:42:51,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:42:51,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-30 01:42:51,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=828, Unknown=0, NotChecked=0, Total=1260 [2020-11-30 01:42:51,960 INFO L87 Difference]: Start difference. First operand 182 states and 251 transitions. Second operand 36 states. [2020-11-30 01:42:52,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:42:52,746 INFO L93 Difference]: Finished difference Result 346 states and 495 transitions. [2020-11-30 01:42:52,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-30 01:42:52,763 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 92 [2020-11-30 01:42:52,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:42:52,765 INFO L225 Difference]: With dead ends: 346 [2020-11-30 01:42:52,765 INFO L226 Difference]: Without dead ends: 229 [2020-11-30 01:42:52,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 499 SyntacticMatches, 17 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=432, Invalid=828, Unknown=0, NotChecked=0, Total=1260 [2020-11-30 01:42:52,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-11-30 01:42:52,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2020-11-30 01:42:52,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-11-30 01:42:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 313 transitions. [2020-11-30 01:42:52,790 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 313 transitions. Word has length 92 [2020-11-30 01:42:52,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:42:52,792 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 313 transitions. [2020-11-30 01:42:52,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-11-30 01:42:52,793 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 313 transitions. [2020-11-30 01:42:52,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-30 01:42:52,794 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:42:52,795 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 6, 6, 6, 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] [2020-11-30 01:42:53,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3,21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 01:42:53,399 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:42:53,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:42:53,400 INFO L82 PathProgramCache]: Analyzing trace with hash -90385021, now seen corresponding path program 5 times [2020-11-30 01:42:53,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:42:53,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034734338] [2020-11-30 01:42:53,412 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/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 [2020-11-30 01:42:54,240 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2020-11-30 01:42:54,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:42:54,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 01:42:54,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-11-30 01:42:54,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-11-30 01:42:54,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034734338] [2020-11-30 01:42:54,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [344225225] [2020-11-30 01:42:54,626 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/cvc4 Starting monitored process 23 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 01:42:55,498 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2020-11-30 01:42:55,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:42:55,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 01:42:55,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:55,617 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-11-30 01:42:55,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:55,698 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-11-30 01:42:55,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714197525] [2020-11-30 01:42:55,699 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:42:56,779 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2020-11-30 01:42:56,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:42:56,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 01:42:56,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:56,887 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-11-30 01:42:56,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:56,929 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-11-30 01:42:56,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 01:42:56,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10, 10, 10, 10] total 20 [2020-11-30 01:42:56,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591339556] [2020-11-30 01:42:56,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-30 01:42:56,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:42:56,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-30 01:42:56,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2020-11-30 01:42:56,932 INFO L87 Difference]: Start difference. First operand 229 states and 313 transitions. Second operand 20 states. [2020-11-30 01:42:57,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:42:57,940 INFO L93 Difference]: Finished difference Result 370 states and 529 transitions. [2020-11-30 01:42:57,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-30 01:42:57,941 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 116 [2020-11-30 01:42:57,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:42:57,943 INFO L225 Difference]: With dead ends: 370 [2020-11-30 01:42:57,943 INFO L226 Difference]: Without dead ends: 341 [2020-11-30 01:42:57,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 665 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=338, Invalid=784, Unknown=0, NotChecked=0, Total=1122 [2020-11-30 01:42:57,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-11-30 01:42:57,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2020-11-30 01:42:57,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-11-30 01:42:57,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 473 transitions. [2020-11-30 01:42:57,962 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 473 transitions. Word has length 116 [2020-11-30 01:42:57,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:42:57,962 INFO L481 AbstractCegarLoop]: Abstraction has 341 states and 473 transitions. [2020-11-30 01:42:57,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-30 01:42:57,963 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 473 transitions. [2020-11-30 01:42:57,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-11-30 01:42:57,965 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:42:57,965 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 14, 14, 14, 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] [2020-11-30 01:42:58,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 mathsat -unsat_core_generation=3,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 01:42:58,571 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:42:58,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:42:58,572 INFO L82 PathProgramCache]: Analyzing trace with hash 289109635, now seen corresponding path program 6 times [2020-11-30 01:42:58,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:42:58,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041164376] [2020-11-30 01:42:58,573 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/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 [2020-11-30 01:42:59,331 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2020-11-30 01:42:59,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:42:59,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 01:42:59,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:59,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-11-30 01:42:59,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:00,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-11-30 01:43:00,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041164376] [2020-11-30 01:43:00,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1611400870] [2020-11-30 01:43:00,516 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/cvc4 Starting monitored process 26 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 01:43:02,388 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2020-11-30 01:43:02,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:43:02,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-30 01:43:02,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:43:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 0 proven. 470 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2020-11-30 01:43:02,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:02,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-11-30 01:43:02,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245296774] [2020-11-30 01:43:02,820 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:43:03,632 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2020-11-30 01:43:03,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:43:03,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 01:43:03,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:43:03,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-11-30 01:43:03,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-11-30 01:43:03,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 01:43:03,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 18, 22, 18, 18, 18] total 45 [2020-11-30 01:43:03,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404753213] [2020-11-30 01:43:03,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-11-30 01:43:03,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:43:03,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-11-30 01:43:03,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=614, Invalid=1366, Unknown=0, NotChecked=0, Total=1980 [2020-11-30 01:43:03,922 INFO L87 Difference]: Start difference. First operand 341 states and 473 transitions. Second operand 45 states. [2020-11-30 01:43:07,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:07,254 INFO L93 Difference]: Finished difference Result 594 states and 865 transitions. [2020-11-30 01:43:07,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-30 01:43:07,261 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 140 [2020-11-30 01:43:07,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:07,265 INFO L225 Difference]: With dead ends: 594 [2020-11-30 01:43:07,265 INFO L226 Difference]: Without dead ends: 565 [2020-11-30 01:43:07,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 862 GetRequests, 778 SyntacticMatches, 14 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 8 DeprecatedPredicates, 1864 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1384, Invalid=3728, Unknown=0, NotChecked=0, Total=5112 [2020-11-30 01:43:07,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-11-30 01:43:07,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2020-11-30 01:43:07,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 565 states. [2020-11-30 01:43:07,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 793 transitions. [2020-11-30 01:43:07,293 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 793 transitions. Word has length 140 [2020-11-30 01:43:07,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:07,294 INFO L481 AbstractCegarLoop]: Abstraction has 565 states and 793 transitions. [2020-11-30 01:43:07,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-11-30 01:43:07,294 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 793 transitions. [2020-11-30 01:43:07,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-11-30 01:43:07,297 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:07,298 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 22, 22, 22, 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] [2020-11-30 01:43:07,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 cvc4 --incremental --print-success --lang smt --rewrite-divk,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 mathsat -unsat_core_generation=3 [2020-11-30 01:43:07,909 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:43:07,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:07,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1161840509, now seen corresponding path program 7 times [2020-11-30 01:43:07,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:43:07,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197763875] [2020-11-30 01:43:07,910 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/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 [2020-11-30 01:43:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:08,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-30 01:43:08,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:43:09,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2051 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-11-30 01:43:09,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2051 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-11-30 01:43:12,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197763875] [2020-11-30 01:43:12,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1718677423] [2020-11-30 01:43:12,619 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/cvc4 Starting monitored process 29 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 01:43:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:12,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 53 conjunts are in the unsatisfiable core [2020-11-30 01:43:12,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:43:15,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2051 backedges. 0 proven. 2038 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-30 01:43:15,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:16,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2051 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-11-30 01:43:16,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103934777] [2020-11-30 01:43:16,056 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:43:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:16,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-30 01:43:16,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:43:16,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2051 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-11-30 01:43:16,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2051 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2020-11-30 01:43:17,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 01:43:17,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 34, 61, 34, 34, 34] total 105 [2020-11-30 01:43:17,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452414386] [2020-11-30 01:43:17,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 105 states [2020-11-30 01:43:17,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:43:17,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2020-11-30 01:43:17,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1876, Invalid=9044, Unknown=0, NotChecked=0, Total=10920 [2020-11-30 01:43:17,343 INFO L87 Difference]: Start difference. First operand 565 states and 793 transitions. Second operand 105 states. [2020-11-30 01:43:24,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:24,715 INFO L93 Difference]: Finished difference Result 622 states and 877 transitions. [2020-11-30 01:43:24,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-30 01:43:24,731 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 188 [2020-11-30 01:43:24,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:24,735 INFO L225 Difference]: With dead ends: 622 [2020-11-30 01:43:24,735 INFO L226 Difference]: Without dead ends: 593 [2020-11-30 01:43:24,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1143 GetRequests, 993 SyntacticMatches, 34 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 20 DeprecatedPredicates, 8152 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=2264, Invalid=11542, Unknown=0, NotChecked=0, Total=13806 [2020-11-30 01:43:24,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-11-30 01:43:24,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2020-11-30 01:43:24,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-11-30 01:43:24,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 833 transitions. [2020-11-30 01:43:24,766 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 833 transitions. Word has length 188 [2020-11-30 01:43:24,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:24,766 INFO L481 AbstractCegarLoop]: Abstraction has 593 states and 833 transitions. [2020-11-30 01:43:24,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 105 states. [2020-11-30 01:43:24,767 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 833 transitions. [2020-11-30 01:43:24,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-11-30 01:43:24,770 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:24,770 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 22, 22, 22, 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] [2020-11-30 01:43:25,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 mathsat -unsat_core_generation=3,29 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 01:43:25,391 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:43:25,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:25,392 INFO L82 PathProgramCache]: Analyzing trace with hash 146073795, now seen corresponding path program 8 times [2020-11-30 01:43:25,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:43:25,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959452261] [2020-11-30 01:43:25,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/mathsat Starting monitored process 31 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with mathsat -unsat_core_generation=3 [2020-11-30 01:43:25,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:43:25,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:43:25,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 169 conjunts are in the unsatisfiable core [2020-11-30 01:43:25,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:44:10,794 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-11-30 01:44:11,958 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-30 01:44:14,826 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-11-30 01:44:16,288 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-30 01:44:17,882 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-11-30 01:44:19,594 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-11-30 01:44:21,694 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-11-30 01:44:23,767 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-30 01:44:25,929 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-11-30 01:44:28,871 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-11-30 01:44:31,909 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-11-30 01:44:34,991 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-11-30 01:44:38,772 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-11-30 01:44:42,875 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-11-30 01:44:46,886 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-11-30 01:44:52,154 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-11-30 01:44:57,226 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-11-30 01:45:02,473 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-11-30 01:45:08,654 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-11-30 01:45:15,156 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-11-30 01:45:21,858 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-11-30 01:45:29,607 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-11-30 01:45:37,560 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-11-30 01:45:45,717 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-11-30 01:45:54,535 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-30 01:51:03,564 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-30 01:51:03,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959452261] [2020-11-30 01:51:03,566 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2020-11-30 01:51:03,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1009383750] [2020-11-30 01:51:03,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/cvc4 Starting monitored process 32 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 01:51:05,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:51:05,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:51:05,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 175 conjunts are in the unsatisfiable core [2020-11-30 01:51:05,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:51:05,159 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@70f0f2a8 [2020-11-30 01:51:05,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742923245] [2020-11-30 01:51:05,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e96ea11-fc74-403a-afae-bcc39533872b/bin/utaipan/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:51:05,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:51:05,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:51:05,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 148 conjunts are in the unsatisfiable core [2020-11-30 01:51:05,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:51:05,427 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@70f0f2a8 [2020-11-30 01:51:05,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:51:05,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-11-30 01:51:05,428 ERROR L205 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2020-11-30 01:51:05,428 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:51:06,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 mathsat -unsat_core_generation=3,32 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 01:51:06,103 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-30 01:51:06,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:51:06 BoogieIcfgContainer [2020-11-30 01:51:06,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:51:06,104 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:51:06,104 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:51:06,104 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:51:06,105 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:42:30" (3/4) ... [2020-11-30 01:51:06,108 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:51:06,108 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:51:06,109 INFO L168 Benchmark]: Toolchain (without parser) took 520995.10 ms. Allocated memory was 56.6 MB in the beginning and 272.6 MB in the end (delta: 216.0 MB). Free memory was 35.1 MB in the beginning and 122.8 MB in the end (delta: -87.7 MB). Peak memory consumption was 127.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:51:06,110 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 56.6 MB. Free memory was 38.9 MB in the beginning and 38.8 MB in the end (delta: 44.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:51:06,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.49 ms. Allocated memory is still 56.6 MB. Free memory was 35.0 MB in the beginning and 38.2 MB in the end (delta: -3.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:51:06,111 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.54 ms. Allocated memory is still 56.6 MB. Free memory was 38.2 MB in the beginning and 36.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:51:06,111 INFO L168 Benchmark]: Boogie Preprocessor took 80.93 ms. Allocated memory is still 56.6 MB. Free memory was 36.1 MB in the beginning and 34.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:51:06,112 INFO L168 Benchmark]: RCFGBuilder took 4648.88 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 34.0 MB in the beginning and 38.7 MB in the end (delta: -4.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:51:06,112 INFO L168 Benchmark]: TraceAbstraction took 515842.78 ms. Allocated memory was 73.4 MB in the beginning and 272.6 MB in the end (delta: 199.2 MB). Free memory was 38.2 MB in the beginning and 122.8 MB in the end (delta: -84.6 MB). Peak memory consumption was 114.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:51:06,113 INFO L168 Benchmark]: Witness Printer took 4.47 ms. Allocated memory is still 272.6 MB. Free memory is still 122.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:51:06,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 56.6 MB. Free memory was 38.9 MB in the beginning and 38.8 MB in the end (delta: 44.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 337.49 ms. Allocated memory is still 56.6 MB. Free memory was 35.0 MB in the beginning and 38.2 MB in the end (delta: -3.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.54 ms. Allocated memory is still 56.6 MB. Free memory was 38.2 MB in the beginning and 36.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.93 ms. Allocated memory is still 56.6 MB. Free memory was 36.1 MB in the beginning and 34.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4648.88 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 34.0 MB in the beginning and 38.7 MB in the end (delta: -4.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 515842.78 ms. Allocated memory was 73.4 MB in the beginning and 272.6 MB in the end (delta: 199.2 MB). Free memory was 38.2 MB in the beginning and 122.8 MB in the end (delta: -84.6 MB). Peak memory consumption was 114.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.47 ms. Allocated memory is still 272.6 MB. Free memory is still 122.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L151] double x = 0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND FALSE !((ix0 & 0x7ff00000) == 0x7ff00000) [L38] COND TRUE ix0 <= 0 [L39] COND FALSE !(((ix0 & (~sign)) | ix1) == 0) [L41] COND FALSE !(ix0 < 0) [L45] m = (ix0 >> 20) [L46] COND TRUE m == 0 [L47] COND TRUE ix0 == 0 [L48] m -= 21 [L49] ix0 |= (ix1 >> 11) [L50] ix1 <<= 21 [L47] COND FALSE !(ix0 == 0) [L52] i = 0 [L52] COND FALSE !((ix0 & 0x00100000) == 0) [L54] m -= i - 1 [L55] ix0 |= (ix1 >> (32 - i)) [L56] ix1 <<= i [L58] m -= 1023 [L59] ix0 = (ix0 & 0x000fffff) | 0x00100000 [L60] COND TRUE m & 1 [L61] ix0 += ix0 + ((ix1 & sign) >> 31) [L62] ix1 += ix1 [L64] m >>= 1 [L66] ix0 += ix0 + ((ix1 & sign) >> 31) [L67] ix1 += ix1 [L68] EXPR s1 = 0 [L68] EXPR s0 = s1 = 0 [L68] EXPR q1 = s0 = s1 = 0 [L68] q = q1 = s0 = s1 = 0 [L69] r = 0x00200000 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND TRUE r != 0 [L72] t = s0 + r [L73] COND TRUE t <= ix0 [L74] s0 = t + r [L75] ix0 -= t [L76] q += r [L78] ix0 += ix0 + ((ix1 & sign) >> 31) [L79] ix1 += ix1 [L80] r >>= 1 [L71] COND FALSE !(r != 0) [L83] r = sign [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND TRUE r != 0 [L85] t1 = s1 + r [L86] t = s0 [L87] COND FALSE !((t < ix0) || ((t == ix0) && (t1 <= ix1))) [L97] ix0 += ix0 + ((ix1 & sign) >> 31) [L98] ix1 += ix1 [L99] r >>= 1 [L84] COND FALSE !(r != 0) [L102] COND FALSE !((ix0 | ix1) != 0) [L117] ix0 = (q >> 1) + 0x3fe00000 [L118] ix1 = q1 >> 1 [L119] COND TRUE (q & 1) == 1 [L120] ix1 |= sign [L121] ix0 += (m << 20) [L123] ieee_double_shape_type iw_u; [L124] iw_u.parts.msw = (ix0) [L125] iw_u.parts.lsw = (ix1) [L126] EXPR iw_u.value [L126] (z) = iw_u.value [L128] return z; [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == 0.0 && __signbit_double(res) == 0 [L155] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_0730c.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 515.7s, OverallIterations: 15, TraceHistogramMax: 32, AutomataDifference: 20.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1128 SDtfs, 5746 SDslu, 8711 SDs, 0 SdLazy, 10956 SolverSat, 749 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 12.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4709 GetRequests, 4229 SyntacticMatches, 84 SemanticMatches, 396 ConstructedPredicates, 0 IntricatePredicates, 43 DeprecatedPredicates, 12094 ImplicationChecksByTransitivity, 17.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=593occurred in iteration=14, 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, 14 MinimizatonAttempts, 130 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 10.3s SatisfiabilityAnalysisTime, 16.2s InterpolantComputationTime, 2326 NumberOfCodeBlocks, 2218 NumberOfCodeBlocksAsserted, 170 NumberOfCheckSat, 4594 ConstructedInterpolants, 70 QuantifiedInterpolants, 8454986 SizeOfPredicates, 74 NumberOfNonLiveVariables, 6497 ConjunctsInSsa, 364 ConjunctsInUnsatCore, 58 InterpolantComputations, 14 PerfectInterpolantSequences, 14130/27152 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...