./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/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 f4f20531c98faa0af8884f2ddaf47888911b3a46 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/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 f4f20531c98faa0af8884f2ddaf47888911b3a46 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 09:07:13,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:07:13,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:07:13,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:07:13,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:07:13,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:07:13,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:07:13,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:07:13,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:07:13,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:07:13,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:07:13,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:07:13,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:07:13,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:07:13,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:07:13,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:07:13,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:07:13,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:07:13,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:07:13,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:07:13,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:07:13,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:07:13,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:07:13,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:07:13,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:07:13,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:07:13,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:07:13,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:07:13,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:07:13,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:07:13,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:07:13,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:07:13,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:07:13,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:07:13,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:07:13,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:07:13,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:07:13,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:07:13,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:07:13,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:07:13,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:07:13,426 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 09:07:13,448 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:07:13,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:07:13,449 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:07:13,449 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:07:13,449 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:07:13,450 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:07:13,453 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 09:07:13,453 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:07:13,453 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:07:13,453 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 09:07:13,453 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 09:07:13,453 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:07:13,454 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 09:07:13,454 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 09:07:13,454 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 09:07:13,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:07:13,454 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:07:13,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 09:07:13,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:07:13,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:07:13,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 09:07:13,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:07:13,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 09:07:13,455 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:07:13,455 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:07:13,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 09:07:13,455 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:07:13,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 09:07:13,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:07:13,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:07:13,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:07:13,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:07:13,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:07:13,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 09:07:13,456 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 09:07:13,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 09:07:13,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 09:07:13,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:07:13,457 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:07:13,457 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_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f20531c98faa0af8884f2ddaf47888911b3a46 [2020-12-09 09:07:13,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:07:13,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:07:13,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:07:13,638 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:07:13,639 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:07:13,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-12-09 09:07:13,681 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/data/d597861f0/5501b93005c74e5bbe416ac92c328f53/FLAGb672b859f [2020-12-09 09:07:14,058 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:07:14,059 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-12-09 09:07:14,065 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/data/d597861f0/5501b93005c74e5bbe416ac92c328f53/FLAGb672b859f [2020-12-09 09:07:14,077 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/data/d597861f0/5501b93005c74e5bbe416ac92c328f53 [2020-12-09 09:07:14,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:07:14,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:07:14,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:07:14,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:07:14,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:07:14,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:07:14" (1/1) ... [2020-12-09 09:07:14,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15bda15a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:14, skipping insertion in model container [2020-12-09 09:07:14,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:07:14" (1/1) ... [2020-12-09 09:07:14,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:07:14,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:07:14,215 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2020-12-09 09:07:14,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:07:14,272 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:07:14,281 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2020-12-09 09:07:14,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:07:14,326 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:07:14,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:14 WrapperNode [2020-12-09 09:07:14,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:07:14,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:07:14,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:07:14,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:07:14,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:14" (1/1) ... [2020-12-09 09:07:14,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:14" (1/1) ... [2020-12-09 09:07:14,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:07:14,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:07:14,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:07:14,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:07:14,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:14" (1/1) ... [2020-12-09 09:07:14,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:14" (1/1) ... [2020-12-09 09:07:14,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:14" (1/1) ... [2020-12-09 09:07:14,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:14" (1/1) ... [2020-12-09 09:07:14,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:14" (1/1) ... [2020-12-09 09:07:14,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:14" (1/1) ... [2020-12-09 09:07:14,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:14" (1/1) ... [2020-12-09 09:07:14,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:07:14,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:07:14,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:07:14,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:07:14,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/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 [2020-12-09 09:07:14,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 09:07:14,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:07:14,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:07:14,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:07:15,025 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:07:15,025 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2020-12-09 09:07:15,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:07:15 BoogieIcfgContainer [2020-12-09 09:07:15,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:07:15,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:07:15,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:07:15,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:07:15,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:07:14" (1/3) ... [2020-12-09 09:07:15,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cebaaaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:07:15, skipping insertion in model container [2020-12-09 09:07:15,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:14" (2/3) ... [2020-12-09 09:07:15,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cebaaaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:07:15, skipping insertion in model container [2020-12-09 09:07:15,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:07:15" (3/3) ... [2020-12-09 09:07:15,035 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-12-09 09:07:15,048 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:07:15,051 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 09:07:15,061 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 09:07:15,078 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:07:15,078 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 09:07:15,078 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:07:15,078 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:07:15,078 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:07:15,078 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:07:15,078 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:07:15,078 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:07:15,089 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-12-09 09:07:15,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 09:07:15,095 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:15,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:07:15,096 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:15,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:15,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1721667261, now seen corresponding path program 1 times [2020-12-09 09:07:15,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:07:15,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175859868] [2020-12-09 09:07:15,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:07:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:15,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:15,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175859868] [2020-12-09 09:07:15,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:15,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 09:07:15,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721134274] [2020-12-09 09:07:15,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:07:15,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:07:15,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:07:15,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:07:15,332 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 6 states. [2020-12-09 09:07:15,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:15,447 INFO L93 Difference]: Finished difference Result 210 states and 311 transitions. [2020-12-09 09:07:15,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 09:07:15,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-09 09:07:15,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:15,459 INFO L225 Difference]: With dead ends: 210 [2020-12-09 09:07:15,459 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 09:07:15,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 09:07:15,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 09:07:15,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 66. [2020-12-09 09:07:15,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-09 09:07:15,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2020-12-09 09:07:15,496 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 10 [2020-12-09 09:07:15,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:15,496 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2020-12-09 09:07:15,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:07:15,497 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2020-12-09 09:07:15,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 09:07:15,497 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:15,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:07:15,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 09:07:15,498 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:15,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:15,499 INFO L82 PathProgramCache]: Analyzing trace with hash -198206187, now seen corresponding path program 1 times [2020-12-09 09:07:15,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:07:15,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823021915] [2020-12-09 09:07:15,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:07:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:15,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:15,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823021915] [2020-12-09 09:07:15,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:15,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 09:07:15,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953097045] [2020-12-09 09:07:15,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 09:07:15,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:07:15,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 09:07:15,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 09:07:15,617 INFO L87 Difference]: Start difference. First operand 66 states and 90 transitions. Second operand 7 states. [2020-12-09 09:07:15,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:15,765 INFO L93 Difference]: Finished difference Result 239 states and 298 transitions. [2020-12-09 09:07:15,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-09 09:07:15,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-12-09 09:07:15,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:15,767 INFO L225 Difference]: With dead ends: 239 [2020-12-09 09:07:15,767 INFO L226 Difference]: Without dead ends: 225 [2020-12-09 09:07:15,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-09 09:07:15,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-12-09 09:07:15,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 98. [2020-12-09 09:07:15,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-09 09:07:15,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 139 transitions. [2020-12-09 09:07:15,778 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 139 transitions. Word has length 13 [2020-12-09 09:07:15,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:15,778 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 139 transitions. [2020-12-09 09:07:15,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 09:07:15,779 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 139 transitions. [2020-12-09 09:07:15,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 09:07:15,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:15,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:07:15,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 09:07:15,780 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:15,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:15,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1800037603, now seen corresponding path program 1 times [2020-12-09 09:07:15,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:07:15,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433819158] [2020-12-09 09:07:15,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:07:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:15,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:15,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433819158] [2020-12-09 09:07:15,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:15,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 09:07:15,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139786163] [2020-12-09 09:07:15,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 09:07:15,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:07:15,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 09:07:15,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-09 09:07:15,928 INFO L87 Difference]: Start difference. First operand 98 states and 139 transitions. Second operand 9 states. [2020-12-09 09:07:16,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:16,102 INFO L93 Difference]: Finished difference Result 176 states and 234 transitions. [2020-12-09 09:07:16,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 09:07:16,103 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-12-09 09:07:16,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:16,104 INFO L225 Difference]: With dead ends: 176 [2020-12-09 09:07:16,105 INFO L226 Difference]: Without dead ends: 164 [2020-12-09 09:07:16,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-12-09 09:07:16,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-12-09 09:07:16,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-12-09 09:07:16,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-09 09:07:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 184 transitions. [2020-12-09 09:07:16,118 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 184 transitions. Word has length 14 [2020-12-09 09:07:16,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:16,119 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 184 transitions. [2020-12-09 09:07:16,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 09:07:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 184 transitions. [2020-12-09 09:07:16,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 09:07:16,120 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:16,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:07:16,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 09:07:16,120 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:16,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:16,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1937065842, now seen corresponding path program 1 times [2020-12-09 09:07:16,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:07:16,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430612907] [2020-12-09 09:07:16,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:07:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:16,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:16,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430612907] [2020-12-09 09:07:16,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:16,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 09:07:16,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65123315] [2020-12-09 09:07:16,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:07:16,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:07:16,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:07:16,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:07:16,212 INFO L87 Difference]: Start difference. First operand 130 states and 184 transitions. Second operand 5 states. [2020-12-09 09:07:16,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:16,298 INFO L93 Difference]: Finished difference Result 196 states and 252 transitions. [2020-12-09 09:07:16,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 09:07:16,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-09 09:07:16,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:16,300 INFO L225 Difference]: With dead ends: 196 [2020-12-09 09:07:16,300 INFO L226 Difference]: Without dead ends: 154 [2020-12-09 09:07:16,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 09:07:16,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-12-09 09:07:16,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 110. [2020-12-09 09:07:16,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-09 09:07:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 150 transitions. [2020-12-09 09:07:16,310 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 150 transitions. Word has length 14 [2020-12-09 09:07:16,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:16,311 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 150 transitions. [2020-12-09 09:07:16,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:07:16,311 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 150 transitions. [2020-12-09 09:07:16,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 09:07:16,312 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:16,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:07:16,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 09:07:16,313 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:16,313 INFO L82 PathProgramCache]: Analyzing trace with hash -689073020, now seen corresponding path program 1 times [2020-12-09 09:07:16,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:07:16,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894017468] [2020-12-09 09:07:16,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:07:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:16,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:16,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894017468] [2020-12-09 09:07:16,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:16,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 09:07:16,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14555646] [2020-12-09 09:07:16,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:07:16,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:07:16,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:07:16,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:07:16,385 INFO L87 Difference]: Start difference. First operand 110 states and 150 transitions. Second operand 6 states. [2020-12-09 09:07:16,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:16,458 INFO L93 Difference]: Finished difference Result 199 states and 255 transitions. [2020-12-09 09:07:16,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 09:07:16,458 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-09 09:07:16,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:16,460 INFO L225 Difference]: With dead ends: 199 [2020-12-09 09:07:16,460 INFO L226 Difference]: Without dead ends: 178 [2020-12-09 09:07:16,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 09:07:16,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-12-09 09:07:16,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 105. [2020-12-09 09:07:16,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-09 09:07:16,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 144 transitions. [2020-12-09 09:07:16,468 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 144 transitions. Word has length 17 [2020-12-09 09:07:16,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:16,469 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 144 transitions. [2020-12-09 09:07:16,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:07:16,469 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 144 transitions. [2020-12-09 09:07:16,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 09:07:16,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:16,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:07:16,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 09:07:16,470 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:16,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:16,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1902571858, now seen corresponding path program 1 times [2020-12-09 09:07:16,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:07:16,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129959163] [2020-12-09 09:07:16,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:07:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:16,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:16,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129959163] [2020-12-09 09:07:16,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:16,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-09 09:07:16,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609302119] [2020-12-09 09:07:16,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 09:07:16,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:07:16,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 09:07:16,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-12-09 09:07:16,972 INFO L87 Difference]: Start difference. First operand 105 states and 144 transitions. Second operand 12 states. [2020-12-09 09:07:17,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:17,446 INFO L93 Difference]: Finished difference Result 180 states and 233 transitions. [2020-12-09 09:07:17,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 09:07:17,447 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-12-09 09:07:17,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:17,448 INFO L225 Difference]: With dead ends: 180 [2020-12-09 09:07:17,448 INFO L226 Difference]: Without dead ends: 176 [2020-12-09 09:07:17,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-12-09 09:07:17,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-12-09 09:07:17,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 106. [2020-12-09 09:07:17,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-09 09:07:17,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 145 transitions. [2020-12-09 09:07:17,453 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 145 transitions. Word has length 18 [2020-12-09 09:07:17,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:17,453 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 145 transitions. [2020-12-09 09:07:17,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 09:07:17,453 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 145 transitions. [2020-12-09 09:07:17,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 09:07:17,454 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:17,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:07:17,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 09:07:17,455 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:17,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:17,455 INFO L82 PathProgramCache]: Analyzing trace with hash 162959758, now seen corresponding path program 1 times [2020-12-09 09:07:17,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:07:17,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672420456] [2020-12-09 09:07:17,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:07:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:17,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:17,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672420456] [2020-12-09 09:07:17,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:17,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 09:07:17,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155548484] [2020-12-09 09:07:17,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 09:07:17,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:07:17,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 09:07:17,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-09 09:07:17,529 INFO L87 Difference]: Start difference. First operand 106 states and 145 transitions. Second operand 8 states. [2020-12-09 09:07:17,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:17,781 INFO L93 Difference]: Finished difference Result 321 states and 399 transitions. [2020-12-09 09:07:17,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-09 09:07:17,781 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-12-09 09:07:17,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:17,783 INFO L225 Difference]: With dead ends: 321 [2020-12-09 09:07:17,784 INFO L226 Difference]: Without dead ends: 317 [2020-12-09 09:07:17,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-12-09 09:07:17,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-12-09 09:07:17,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 142. [2020-12-09 09:07:17,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-09 09:07:17,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 201 transitions. [2020-12-09 09:07:17,795 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 201 transitions. Word has length 18 [2020-12-09 09:07:17,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:17,795 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 201 transitions. [2020-12-09 09:07:17,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 09:07:17,795 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 201 transitions. [2020-12-09 09:07:17,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 09:07:17,797 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:17,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:07:17,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 09:07:17,797 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:17,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:17,798 INFO L82 PathProgramCache]: Analyzing trace with hash -394904093, now seen corresponding path program 1 times [2020-12-09 09:07:17,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:07:17,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288931613] [2020-12-09 09:07:17,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:07:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 09:07:17,833 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 09:07:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 09:07:17,860 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 09:07:17,876 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 09:07:17,876 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 09:07:17,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 09:07:17,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:07:17 BoogieIcfgContainer [2020-12-09 09:07:17,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 09:07:17,901 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 09:07:17,901 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 09:07:17,901 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 09:07:17,901 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:07:15" (3/4) ... [2020-12-09 09:07:17,903 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 09:07:17,903 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 09:07:17,905 INFO L168 Benchmark]: Toolchain (without parser) took 3823.81 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 75.1 MB in the beginning and 92.2 MB in the end (delta: -17.1 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. [2020-12-09 09:07:17,905 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 69.2 MB. Free memory is still 41.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:07:17,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.84 ms. Allocated memory is still 104.9 MB. Free memory was 74.9 MB in the beginning and 75.1 MB in the end (delta: -193.4 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 09:07:17,906 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.14 ms. Allocated memory is still 104.9 MB. Free memory was 75.1 MB in the beginning and 72.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:07:17,906 INFO L168 Benchmark]: Boogie Preprocessor took 31.82 ms. Allocated memory is still 104.9 MB. Free memory was 72.8 MB in the beginning and 71.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:07:17,907 INFO L168 Benchmark]: RCFGBuilder took 625.25 ms. Allocated memory is still 104.9 MB. Free memory was 71.0 MB in the beginning and 79.3 MB in the end (delta: -8.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. [2020-12-09 09:07:17,907 INFO L168 Benchmark]: TraceAbstraction took 2871.80 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 78.6 MB in the beginning and 92.2 MB in the end (delta: -13.6 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. [2020-12-09 09:07:17,908 INFO L168 Benchmark]: Witness Printer took 2.78 ms. Allocated memory is still 151.0 MB. Free memory is still 92.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:07:17,910 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 69.2 MB. Free memory is still 41.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.84 ms. Allocated memory is still 104.9 MB. Free memory was 74.9 MB in the beginning and 75.1 MB in the end (delta: -193.4 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.14 ms. Allocated memory is still 104.9 MB. Free memory was 75.1 MB in the beginning and 72.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.82 ms. Allocated memory is still 104.9 MB. Free memory was 72.8 MB in the beginning and 71.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 625.25 ms. Allocated memory is still 104.9 MB. Free memory was 71.0 MB in the beginning and 79.3 MB in the end (delta: -8.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2871.80 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 78.6 MB in the beginning and 92.2 MB in the end (delta: -13.6 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. * Witness Printer took 2.78 ms. Allocated memory is still 151.0 MB. Free memory is still 92.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 102, overapproximation of bitwiseAnd at line 100. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add ; [L225] unsigned int zero ; [L226] int sa ; [L227] int sb ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int tmp___1 ; [L231] int tmp___2 ; [L232] int tmp___3 ; [L233] int tmp___4 ; [L234] int tmp___5 ; [L235] int tmp___6 ; [L236] int tmp___7 ; [L237] int tmp___8 ; [L238] int tmp___9 ; [L239] int __retres23 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L243] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L244] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L245] b = base2flt(mb, eb) [L247] COND FALSE !(a < zero) [L250] COND TRUE a > zero [L251] tmp = 1 [L255] sa = tmp [L257] COND FALSE !(b < zero) [L260] COND TRUE b > zero [L261] tmp___0 = 1 [L265] sb = tmp___0 [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND TRUE !(cond) [L9] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 66 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 679 SDtfs, 1477 SDslu, 2597 SDs, 0 SdLazy, 439 SolverSat, 103 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=7, 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, 7 MinimizatonAttempts, 602 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 10099 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 09:07:19,389 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-12-09 09:07:19,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:07:19,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:07:19,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:07:19,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:07:19,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:07:19,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:07:19,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:07:19,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:07:19,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:07:19,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:07:19,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:07:19,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:07:19,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:07:19,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:07:19,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:07:19,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:07:19,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:07:19,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:07:19,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:07:19,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:07:19,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:07:19,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:07:19,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:07:19,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:07:19,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:07:19,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:07:19,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:07:19,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:07:19,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:07:19,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:07:19,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:07:19,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:07:19,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:07:19,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:07:19,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:07:19,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:07:19,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:07:19,445 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 09:07:19,466 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:07:19,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:07:19,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:07:19,467 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:07:19,467 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:07:19,467 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:07:19,467 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:07:19,467 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:07:19,467 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:07:19,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:07:19,468 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:07:19,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:07:19,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:07:19,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 09:07:19,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:07:19,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 09:07:19,469 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:07:19,469 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 09:07:19,469 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 09:07:19,469 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:07:19,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 09:07:19,469 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:07:19,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 09:07:19,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:07:19,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 09:07:19,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:07:19,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:07:19,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:07:19,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:07:19,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 09:07:19,471 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 09:07:19,471 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 09:07:19,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 09:07:19,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:07:19,471 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:07:19,471 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_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f20531c98faa0af8884f2ddaf47888911b3a46 [2020-12-09 09:07:19,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:07:19,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:07:19,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:07:19,716 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:07:19,717 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:07:19,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-12-09 09:07:19,757 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/data/6d61982ac/295727dcfde047fa845d10dda2eaca71/FLAG59cf97c3b [2020-12-09 09:07:20,151 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:07:20,152 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-12-09 09:07:20,160 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/data/6d61982ac/295727dcfde047fa845d10dda2eaca71/FLAG59cf97c3b [2020-12-09 09:07:20,171 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/data/6d61982ac/295727dcfde047fa845d10dda2eaca71 [2020-12-09 09:07:20,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:07:20,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:07:20,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:07:20,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:07:20,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:07:20,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:07:20" (1/1) ... [2020-12-09 09:07:20,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2afa4260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:20, skipping insertion in model container [2020-12-09 09:07:20,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:07:20" (1/1) ... [2020-12-09 09:07:20,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:07:20,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:07:20,305 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2020-12-09 09:07:20,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:07:20,374 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:07:20,386 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2020-12-09 09:07:20,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:07:20,432 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:07:20,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:20 WrapperNode [2020-12-09 09:07:20,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:07:20,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:07:20,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:07:20,433 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:07:20,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:20" (1/1) ... [2020-12-09 09:07:20,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:20" (1/1) ... [2020-12-09 09:07:20,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:07:20,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:07:20,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:07:20,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:07:20,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:20" (1/1) ... [2020-12-09 09:07:20,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:20" (1/1) ... [2020-12-09 09:07:20,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:20" (1/1) ... [2020-12-09 09:07:20,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:20" (1/1) ... [2020-12-09 09:07:20,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:20" (1/1) ... [2020-12-09 09:07:20,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:20" (1/1) ... [2020-12-09 09:07:20,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:20" (1/1) ... [2020-12-09 09:07:20,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:07:20,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:07:20,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:07:20,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:07:20,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/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 [2020-12-09 09:07:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 09:07:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:07:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:07:20,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:07:20,903 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:07:20,903 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2020-12-09 09:07:20,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:07:20 BoogieIcfgContainer [2020-12-09 09:07:20,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:07:20,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:07:20,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:07:20,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:07:20,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:07:20" (1/3) ... [2020-12-09 09:07:20,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f1aa4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:07:20, skipping insertion in model container [2020-12-09 09:07:20,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:07:20" (2/3) ... [2020-12-09 09:07:20,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f1aa4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:07:20, skipping insertion in model container [2020-12-09 09:07:20,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:07:20" (3/3) ... [2020-12-09 09:07:20,909 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-12-09 09:07:20,919 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:07:20,921 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 09:07:20,928 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 09:07:20,946 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:07:20,946 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 09:07:20,946 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:07:20,946 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:07:20,946 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:07:20,946 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:07:20,946 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:07:20,946 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:07:20,957 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2020-12-09 09:07:20,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 09:07:20,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:20,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:07:20,961 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:20,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:20,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1626643796, now seen corresponding path program 1 times [2020-12-09 09:07:20,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:07:20,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981775212] [2020-12-09 09:07:20,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/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 [2020-12-09 09:07:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:21,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 09:07:21,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:07:21,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:21,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:07:21,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981775212] [2020-12-09 09:07:21,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:21,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 09:07:21,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230832605] [2020-12-09 09:07:21,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:07:21,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:07:21,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:07:21,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:07:21,147 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 5 states. [2020-12-09 09:07:21,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:21,314 INFO L93 Difference]: Finished difference Result 397 states and 607 transitions. [2020-12-09 09:07:21,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 09:07:21,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-09 09:07:21,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:21,329 INFO L225 Difference]: With dead ends: 397 [2020-12-09 09:07:21,329 INFO L226 Difference]: Without dead ends: 295 [2020-12-09 09:07:21,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 09:07:21,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-12-09 09:07:21,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 120. [2020-12-09 09:07:21,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-12-09 09:07:21,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 172 transitions. [2020-12-09 09:07:21,383 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 172 transitions. Word has length 18 [2020-12-09 09:07:21,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:21,383 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 172 transitions. [2020-12-09 09:07:21,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:07:21,383 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 172 transitions. [2020-12-09 09:07:21,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 09:07:21,385 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:21,385 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] [2020-12-09 09:07:21,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 09:07:21,587 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:21,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:21,588 INFO L82 PathProgramCache]: Analyzing trace with hash -908455500, now seen corresponding path program 1 times [2020-12-09 09:07:21,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:07:21,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451239542] [2020-12-09 09:07:21,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/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 [2020-12-09 09:07:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:21,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 09:07:21,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:07:21,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:21,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:07:21,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451239542] [2020-12-09 09:07:21,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:21,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 09:07:21,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187305733] [2020-12-09 09:07:21,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:07:21,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:07:21,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:07:21,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:07:21,792 INFO L87 Difference]: Start difference. First operand 120 states and 172 transitions. Second operand 5 states. [2020-12-09 09:07:21,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:21,935 INFO L93 Difference]: Finished difference Result 394 states and 543 transitions. [2020-12-09 09:07:21,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 09:07:21,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-12-09 09:07:21,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:21,938 INFO L225 Difference]: With dead ends: 394 [2020-12-09 09:07:21,938 INFO L226 Difference]: Without dead ends: 337 [2020-12-09 09:07:21,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 09:07:21,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-12-09 09:07:21,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 186. [2020-12-09 09:07:21,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-12-09 09:07:21,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 269 transitions. [2020-12-09 09:07:21,954 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 269 transitions. Word has length 22 [2020-12-09 09:07:21,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:21,954 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 269 transitions. [2020-12-09 09:07:21,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:07:21,954 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 269 transitions. [2020-12-09 09:07:21,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 09:07:21,955 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:21,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:07:22,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 09:07:22,156 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:22,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:22,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1301482510, now seen corresponding path program 1 times [2020-12-09 09:07:22,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:07:22,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474938013] [2020-12-09 09:07:22,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/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 [2020-12-09 09:07:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:22,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 09:07:22,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:07:22,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:22,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:07:22,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474938013] [2020-12-09 09:07:22,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:22,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 09:07:22,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701176575] [2020-12-09 09:07:22,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:07:22,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:07:22,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:07:22,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:07:22,333 INFO L87 Difference]: Start difference. First operand 186 states and 269 transitions. Second operand 5 states. [2020-12-09 09:07:22,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:22,440 INFO L93 Difference]: Finished difference Result 378 states and 535 transitions. [2020-12-09 09:07:22,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:07:22,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-12-09 09:07:22,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:22,442 INFO L225 Difference]: With dead ends: 378 [2020-12-09 09:07:22,443 INFO L226 Difference]: Without dead ends: 295 [2020-12-09 09:07:22,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 09:07:22,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-12-09 09:07:22,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 278. [2020-12-09 09:07:22,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-12-09 09:07:22,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 401 transitions. [2020-12-09 09:07:22,463 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 401 transitions. Word has length 22 [2020-12-09 09:07:22,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:22,464 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 401 transitions. [2020-12-09 09:07:22,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:07:22,464 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 401 transitions. [2020-12-09 09:07:22,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 09:07:22,465 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:22,465 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] [2020-12-09 09:07:22,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 09:07:22,670 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:22,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:22,671 INFO L82 PathProgramCache]: Analyzing trace with hash 473524852, now seen corresponding path program 1 times [2020-12-09 09:07:22,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:07:22,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21304208] [2020-12-09 09:07:22,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/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 [2020-12-09 09:07:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:22,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 09:07:22,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:07:22,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:22,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:07:22,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21304208] [2020-12-09 09:07:22,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:22,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 09:07:22,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85924839] [2020-12-09 09:07:22,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:07:22,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:07:22,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:07:22,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:07:22,849 INFO L87 Difference]: Start difference. First operand 278 states and 401 transitions. Second operand 6 states. [2020-12-09 09:07:22,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:22,959 INFO L93 Difference]: Finished difference Result 395 states and 553 transitions. [2020-12-09 09:07:22,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 09:07:22,959 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-09 09:07:22,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:22,961 INFO L225 Difference]: With dead ends: 395 [2020-12-09 09:07:22,961 INFO L226 Difference]: Without dead ends: 318 [2020-12-09 09:07:22,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 09:07:22,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-12-09 09:07:22,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 258. [2020-12-09 09:07:22,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-12-09 09:07:22,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 365 transitions. [2020-12-09 09:07:22,972 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 365 transitions. Word has length 22 [2020-12-09 09:07:22,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:22,972 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 365 transitions. [2020-12-09 09:07:22,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:07:22,972 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 365 transitions. [2020-12-09 09:07:22,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 09:07:22,973 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:22,973 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] [2020-12-09 09:07:23,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 09:07:23,175 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:23,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:23,176 INFO L82 PathProgramCache]: Analyzing trace with hash 177561437, now seen corresponding path program 1 times [2020-12-09 09:07:23,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:07:23,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599612193] [2020-12-09 09:07:23,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/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 [2020-12-09 09:07:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:23,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 09:07:23,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:07:23,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:23,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:07:23,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599612193] [2020-12-09 09:07:23,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:23,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 09:07:23,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673454591] [2020-12-09 09:07:23,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 09:07:23,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:07:23,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 09:07:23,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 09:07:23,364 INFO L87 Difference]: Start difference. First operand 258 states and 365 transitions. Second operand 7 states. [2020-12-09 09:07:23,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:23,600 INFO L93 Difference]: Finished difference Result 402 states and 541 transitions. [2020-12-09 09:07:23,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-09 09:07:23,601 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-12-09 09:07:23,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:23,602 INFO L225 Difference]: With dead ends: 402 [2020-12-09 09:07:23,602 INFO L226 Difference]: Without dead ends: 354 [2020-12-09 09:07:23,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-12-09 09:07:23,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-12-09 09:07:23,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 248. [2020-12-09 09:07:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-12-09 09:07:23,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 348 transitions. [2020-12-09 09:07:23,612 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 348 transitions. Word has length 26 [2020-12-09 09:07:23,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:23,612 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 348 transitions. [2020-12-09 09:07:23,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 09:07:23,612 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 348 transitions. [2020-12-09 09:07:23,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 09:07:23,613 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:23,613 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] [2020-12-09 09:07:23,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 09:07:23,814 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:23,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:23,814 INFO L82 PathProgramCache]: Analyzing trace with hash 755236346, now seen corresponding path program 1 times [2020-12-09 09:07:23,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:07:23,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673943917] [2020-12-09 09:07:23,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/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 [2020-12-09 09:07:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:23,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 09:07:23,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:07:23,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:23,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:07:23,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673943917] [2020-12-09 09:07:23,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:23,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:07:23,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608514234] [2020-12-09 09:07:23,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:07:23,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:07:23,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:07:23,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:07:23,903 INFO L87 Difference]: Start difference. First operand 248 states and 348 transitions. Second operand 4 states. [2020-12-09 09:07:23,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:23,936 INFO L93 Difference]: Finished difference Result 423 states and 593 transitions. [2020-12-09 09:07:23,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:07:23,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-12-09 09:07:23,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:23,939 INFO L225 Difference]: With dead ends: 423 [2020-12-09 09:07:23,939 INFO L226 Difference]: Without dead ends: 348 [2020-12-09 09:07:23,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:07:23,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-12-09 09:07:23,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 304. [2020-12-09 09:07:23,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-12-09 09:07:23,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 419 transitions. [2020-12-09 09:07:23,950 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 419 transitions. Word has length 30 [2020-12-09 09:07:23,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:23,950 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 419 transitions. [2020-12-09 09:07:23,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:07:23,950 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 419 transitions. [2020-12-09 09:07:23,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 09:07:23,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:23,951 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] [2020-12-09 09:07:24,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 09:07:24,153 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:24,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:24,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1878814160, now seen corresponding path program 1 times [2020-12-09 09:07:24,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:07:24,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105727121] [2020-12-09 09:07:24,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/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 [2020-12-09 09:07:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:24,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 09:07:24,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:07:24,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:24,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:07:24,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105727121] [2020-12-09 09:07:24,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:24,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 09:07:24,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865854068] [2020-12-09 09:07:24,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:07:24,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:07:24,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:07:24,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:07:24,358 INFO L87 Difference]: Start difference. First operand 304 states and 419 transitions. Second operand 6 states. [2020-12-09 09:07:24,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:24,580 INFO L93 Difference]: Finished difference Result 783 states and 1075 transitions. [2020-12-09 09:07:24,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 09:07:24,581 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-12-09 09:07:24,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:24,584 INFO L225 Difference]: With dead ends: 783 [2020-12-09 09:07:24,584 INFO L226 Difference]: Without dead ends: 687 [2020-12-09 09:07:24,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-12-09 09:07:24,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2020-12-09 09:07:24,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 442. [2020-12-09 09:07:24,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-12-09 09:07:24,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 610 transitions. [2020-12-09 09:07:24,602 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 610 transitions. Word has length 30 [2020-12-09 09:07:24,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:24,602 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 610 transitions. [2020-12-09 09:07:24,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:07:24,602 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 610 transitions. [2020-12-09 09:07:24,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 09:07:24,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:24,603 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] [2020-12-09 09:07:24,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 09:07:24,805 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:24,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:24,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1878873742, now seen corresponding path program 1 times [2020-12-09 09:07:24,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:07:24,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266008905] [2020-12-09 09:07:24,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 09:07:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:24,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 09:07:24,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:07:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:24,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:07:24,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266008905] [2020-12-09 09:07:24,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:24,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 09:07:24,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264299400] [2020-12-09 09:07:24,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 09:07:24,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:07:24,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 09:07:24,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 09:07:24,983 INFO L87 Difference]: Start difference. First operand 442 states and 610 transitions. Second operand 7 states. [2020-12-09 09:07:25,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:25,263 INFO L93 Difference]: Finished difference Result 685 states and 927 transitions. [2020-12-09 09:07:25,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 09:07:25,263 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-12-09 09:07:25,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:25,266 INFO L225 Difference]: With dead ends: 685 [2020-12-09 09:07:25,266 INFO L226 Difference]: Without dead ends: 683 [2020-12-09 09:07:25,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-09 09:07:25,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-12-09 09:07:25,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 442. [2020-12-09 09:07:25,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-12-09 09:07:25,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 608 transitions. [2020-12-09 09:07:25,282 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 608 transitions. Word has length 30 [2020-12-09 09:07:25,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:25,282 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 608 transitions. [2020-12-09 09:07:25,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 09:07:25,282 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 608 transitions. [2020-12-09 09:07:25,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 09:07:25,283 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:25,283 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] [2020-12-09 09:07:25,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 09:07:25,484 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:25,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:25,484 INFO L82 PathProgramCache]: Analyzing trace with hash -929192940, now seen corresponding path program 1 times [2020-12-09 09:07:25,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:07:25,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443841382] [2020-12-09 09:07:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/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 [2020-12-09 09:07:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:25,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 09:07:25,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:07:25,551 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 09:07:25,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:25,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:07:25,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443841382] [2020-12-09 09:07:25,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:25,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:07:25,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458894287] [2020-12-09 09:07:25,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:07:25,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:07:25,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:07:25,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:07:25,564 INFO L87 Difference]: Start difference. First operand 442 states and 608 transitions. Second operand 4 states. [2020-12-09 09:07:25,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:25,641 INFO L93 Difference]: Finished difference Result 529 states and 726 transitions. [2020-12-09 09:07:25,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:07:25,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-12-09 09:07:25,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:25,644 INFO L225 Difference]: With dead ends: 529 [2020-12-09 09:07:25,644 INFO L226 Difference]: Without dead ends: 527 [2020-12-09 09:07:25,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:07:25,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-12-09 09:07:25,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 446. [2020-12-09 09:07:25,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-12-09 09:07:25,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 614 transitions. [2020-12-09 09:07:25,659 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 614 transitions. Word has length 30 [2020-12-09 09:07:25,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:25,659 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 614 transitions. [2020-12-09 09:07:25,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:07:25,659 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 614 transitions. [2020-12-09 09:07:25,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 09:07:25,660 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:25,660 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] [2020-12-09 09:07:25,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-09 09:07:25,861 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:25,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:25,861 INFO L82 PathProgramCache]: Analyzing trace with hash -929133358, now seen corresponding path program 1 times [2020-12-09 09:07:25,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:07:25,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141866036] [2020-12-09 09:07:25,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-09 09:07:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:25,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 09:07:25,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:07:25,938 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 09:07:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:25,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:07:25,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141866036] [2020-12-09 09:07:25,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:25,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:07:25,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169592562] [2020-12-09 09:07:25,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:07:25,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:07:25,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:07:25,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:07:25,952 INFO L87 Difference]: Start difference. First operand 446 states and 614 transitions. Second operand 4 states. [2020-12-09 09:07:26,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:26,018 INFO L93 Difference]: Finished difference Result 446 states and 614 transitions. [2020-12-09 09:07:26,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:07:26,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-12-09 09:07:26,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:26,020 INFO L225 Difference]: With dead ends: 446 [2020-12-09 09:07:26,021 INFO L226 Difference]: Without dead ends: 444 [2020-12-09 09:07:26,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:07:26,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-12-09 09:07:26,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 440. [2020-12-09 09:07:26,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-12-09 09:07:26,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 605 transitions. [2020-12-09 09:07:26,035 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 605 transitions. Word has length 30 [2020-12-09 09:07:26,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:26,035 INFO L481 AbstractCegarLoop]: Abstraction has 440 states and 605 transitions. [2020-12-09 09:07:26,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:07:26,035 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 605 transitions. [2020-12-09 09:07:26,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 09:07:26,036 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:26,036 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] [2020-12-09 09:07:26,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-09 09:07:26,237 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:26,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:26,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1141049161, now seen corresponding path program 1 times [2020-12-09 09:07:26,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:07:26,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138816773] [2020-12-09 09:07:26,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-09 09:07:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:26,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 09:07:26,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:07:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:26,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:07:26,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138816773] [2020-12-09 09:07:26,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:26,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:07:26,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348384561] [2020-12-09 09:07:26,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:07:26,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:07:26,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:07:26,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:07:26,307 INFO L87 Difference]: Start difference. First operand 440 states and 605 transitions. Second operand 3 states. [2020-12-09 09:07:26,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:26,349 INFO L93 Difference]: Finished difference Result 849 states and 1132 transitions. [2020-12-09 09:07:26,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:07:26,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-09 09:07:26,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:26,351 INFO L225 Difference]: With dead ends: 849 [2020-12-09 09:07:26,351 INFO L226 Difference]: Without dead ends: 412 [2020-12-09 09:07:26,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:07:26,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-12-09 09:07:26,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 300. [2020-12-09 09:07:26,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-12-09 09:07:26,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 398 transitions. [2020-12-09 09:07:26,363 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 398 transitions. Word has length 30 [2020-12-09 09:07:26,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:26,363 INFO L481 AbstractCegarLoop]: Abstraction has 300 states and 398 transitions. [2020-12-09 09:07:26,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:07:26,363 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 398 transitions. [2020-12-09 09:07:26,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-09 09:07:26,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:26,364 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] [2020-12-09 09:07:26,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-12-09 09:07:26,564 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:26,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:26,565 INFO L82 PathProgramCache]: Analyzing trace with hash 2002224973, now seen corresponding path program 1 times [2020-12-09 09:07:26,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:07:26,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408844646] [2020-12-09 09:07:26,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/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 [2020-12-09 09:07:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:26,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 09:07:26,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:07:26,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:26,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:07:26,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408844646] [2020-12-09 09:07:26,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:26,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 09:07:26,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271798305] [2020-12-09 09:07:26,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 09:07:26,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:07:26,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 09:07:26,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-09 09:07:26,666 INFO L87 Difference]: Start difference. First operand 300 states and 398 transitions. Second operand 9 states. [2020-12-09 09:07:26,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:26,965 INFO L93 Difference]: Finished difference Result 373 states and 488 transitions. [2020-12-09 09:07:26,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-09 09:07:26,965 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-12-09 09:07:26,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:26,967 INFO L225 Difference]: With dead ends: 373 [2020-12-09 09:07:26,967 INFO L226 Difference]: Without dead ends: 360 [2020-12-09 09:07:26,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2020-12-09 09:07:26,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-12-09 09:07:26,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 316. [2020-12-09 09:07:26,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-12-09 09:07:26,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 418 transitions. [2020-12-09 09:07:26,981 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 418 transitions. Word has length 31 [2020-12-09 09:07:26,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:26,981 INFO L481 AbstractCegarLoop]: Abstraction has 316 states and 418 transitions. [2020-12-09 09:07:26,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 09:07:26,981 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 418 transitions. [2020-12-09 09:07:26,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-09 09:07:26,982 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:26,982 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] [2020-12-09 09:07:27,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-12-09 09:07:27,183 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:27,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:27,184 INFO L82 PathProgramCache]: Analyzing trace with hash 2059483275, now seen corresponding path program 1 times [2020-12-09 09:07:27,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:07:27,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481524965] [2020-12-09 09:07:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-12-09 09:07:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:27,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 09:07:27,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:07:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:27,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:07:27,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481524965] [2020-12-09 09:07:27,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:27,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:07:27,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120840026] [2020-12-09 09:07:27,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:07:27,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:07:27,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:07:27,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:07:27,350 INFO L87 Difference]: Start difference. First operand 316 states and 418 transitions. Second operand 4 states. [2020-12-09 09:07:27,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:27,378 INFO L93 Difference]: Finished difference Result 320 states and 421 transitions. [2020-12-09 09:07:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:07:27,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-12-09 09:07:27,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:27,380 INFO L225 Difference]: With dead ends: 320 [2020-12-09 09:07:27,380 INFO L226 Difference]: Without dead ends: 316 [2020-12-09 09:07:27,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:07:27,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-12-09 09:07:27,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2020-12-09 09:07:27,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-12-09 09:07:27,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 413 transitions. [2020-12-09 09:07:27,390 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 413 transitions. Word has length 31 [2020-12-09 09:07:27,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:27,390 INFO L481 AbstractCegarLoop]: Abstraction has 316 states and 413 transitions. [2020-12-09 09:07:27,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:07:27,390 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 413 transitions. [2020-12-09 09:07:27,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-09 09:07:27,391 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:27,391 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] [2020-12-09 09:07:27,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-12-09 09:07:27,592 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:27,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:27,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1226989779, now seen corresponding path program 1 times [2020-12-09 09:07:27,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:07:27,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298091128] [2020-12-09 09:07:27,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-12-09 09:07:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:07:27,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 09:07:27,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:07:27,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:07:27,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:07:27,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298091128] [2020-12-09 09:07:27,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:07:27,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:07:27,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461435216] [2020-12-09 09:07:27,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:07:27,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:07:27,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:07:27,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:07:27,694 INFO L87 Difference]: Start difference. First operand 316 states and 413 transitions. Second operand 4 states. [2020-12-09 09:07:27,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:07:27,717 INFO L93 Difference]: Finished difference Result 498 states and 656 transitions. [2020-12-09 09:07:27,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:07:27,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-12-09 09:07:27,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:07:27,719 INFO L225 Difference]: With dead ends: 498 [2020-12-09 09:07:27,719 INFO L226 Difference]: Without dead ends: 425 [2020-12-09 09:07:27,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:07:27,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-12-09 09:07:27,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 332. [2020-12-09 09:07:27,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-12-09 09:07:27,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 433 transitions. [2020-12-09 09:07:27,731 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 433 transitions. Word has length 32 [2020-12-09 09:07:27,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:07:27,731 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 433 transitions. [2020-12-09 09:07:27,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:07:27,731 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 433 transitions. [2020-12-09 09:07:27,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-09 09:07:27,731 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:07:27,732 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] [2020-12-09 09:07:27,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-12-09 09:07:27,933 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:07:27,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:07:27,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1711564241, now seen corresponding path program 1 times [2020-12-09 09:07:27,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:07:27,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832665840] [2020-12-09 09:07:27,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/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 [2020-12-09 09:07:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 09:07:28,036 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 09:07:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 09:07:28,068 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 09:07:28,098 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 09:07:28,099 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 09:07:28,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-12-09 09:07:28,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:07:28 BoogieIcfgContainer [2020-12-09 09:07:28,367 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 09:07:28,368 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 09:07:28,368 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 09:07:28,368 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 09:07:28,368 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:07:20" (3/4) ... [2020-12-09 09:07:28,369 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 09:07:28,410 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_af3cd72d-83a8-4b44-a9ff-b481dc355cf8/bin/utaipan/witness.graphml [2020-12-09 09:07:28,410 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 09:07:28,411 INFO L168 Benchmark]: Toolchain (without parser) took 8236.73 ms. Allocated memory was 54.5 MB in the beginning and 100.7 MB in the end (delta: 46.1 MB). Free memory was 33.4 MB in the beginning and 34.5 MB in the end (delta: -1.1 MB). Peak memory consumption was 43.8 MB. Max. memory is 16.1 GB. [2020-12-09 09:07:28,411 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 54.5 MB. Free memory was 37.0 MB in the beginning and 36.9 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:07:28,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.11 ms. Allocated memory is still 54.5 MB. Free memory was 33.1 MB in the beginning and 34.5 MB in the end (delta: -1.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 09:07:28,412 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.70 ms. Allocated memory is still 54.5 MB. Free memory was 34.5 MB in the beginning and 32.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:07:28,412 INFO L168 Benchmark]: Boogie Preprocessor took 27.77 ms. Allocated memory is still 54.5 MB. Free memory was 32.2 MB in the beginning and 30.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:07:28,413 INFO L168 Benchmark]: RCFGBuilder took 406.61 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 30.3 MB in the beginning and 43.7 MB in the end (delta: -13.4 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. [2020-12-09 09:07:28,413 INFO L168 Benchmark]: TraceAbstraction took 7461.90 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 43.4 MB in the beginning and 38.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 36.0 MB. Max. memory is 16.1 GB. [2020-12-09 09:07:28,413 INFO L168 Benchmark]: Witness Printer took 42.41 ms. Allocated memory is still 100.7 MB. Free memory was 38.7 MB in the beginning and 34.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 09:07:28,415 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 54.5 MB. Free memory was 37.0 MB in the beginning and 36.9 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 258.11 ms. Allocated memory is still 54.5 MB. Free memory was 33.1 MB in the beginning and 34.5 MB in the end (delta: -1.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.70 ms. Allocated memory is still 54.5 MB. Free memory was 34.5 MB in the beginning and 32.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.77 ms. Allocated memory is still 54.5 MB. Free memory was 32.2 MB in the beginning and 30.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 406.61 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 30.3 MB in the beginning and 43.7 MB in the end (delta: -13.4 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7461.90 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 43.4 MB in the beginning and 38.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 36.0 MB. Max. memory is 16.1 GB. * Witness Printer took 42.41 ms. Allocated memory is still 100.7 MB. Free memory was 38.7 MB in the beginning and 34.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add ; [L225] unsigned int zero ; [L226] int sa ; [L227] int sb ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int tmp___1 ; [L231] int tmp___2 ; [L232] int tmp___3 ; [L233] int tmp___4 ; [L234] int tmp___5 ; [L235] int tmp___6 ; [L236] int tmp___7 ; [L237] int tmp___8 ; [L238] int tmp___9 ; [L239] int __retres23 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L243] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L244] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L245] b = base2flt(mb, eb) [L247] COND FALSE !(a < zero) [L250] COND TRUE a > zero [L251] tmp = 1 [L255] sa = tmp [L257] COND FALSE !(b < zero) [L260] COND TRUE b > zero [L261] tmp___0 = 1 [L265] sb = tmp___0 [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND FALSE !(!(cond)) [L107] delta = ea - eb [L8] COND TRUE !(cond) [L9] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 96 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.3s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2091 SDtfs, 3473 SDslu, 5805 SDs, 0 SdLazy, 1127 SolverSat, 93 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 424 GetRequests, 331 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=446occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 1373 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 416 NumberOfCodeBlocks, 416 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 370 ConstructedInterpolants, 0 QuantifiedInterpolants, 20169 SizeOfPredicates, 55 NumberOfNonLiveVariables, 1085 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...