./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/num_conversion_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/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 22f8891fc10bb8c305de18eb9540699e7b8a01ce ............................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/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 22f8891fc10bb8c305de18eb9540699e7b8a01ce ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:42:52,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:52,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:52,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:52,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:52,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:52,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:52,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:52,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:52,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:52,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:52,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:52,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:52,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:52,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:52,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:52,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:52,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:52,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:52,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:52,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:52,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:52,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:52,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:52,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:52,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:52,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:52,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:52,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:52,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:52,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:52,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:52,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:52,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:52,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:52,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:52,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:52,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:52,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:52,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:52,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:52,469 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:42:52,517 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:52,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:52,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:52,519 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:52,519 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:52,519 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:52,520 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:42:52,520 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:52,520 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:52,520 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:42:52,521 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:42:52,522 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:52,522 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:42:52,522 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:42:52,522 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:42:52,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:52,523 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:52,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:42:52,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:52,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:52,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:52,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:52,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:52,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:42:52,525 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:52,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:52,526 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:52,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:52,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:52,528 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:52,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:52,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:52,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:52,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:52,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:52,530 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:42:52,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:42:52,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:52,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:52,531 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:52,531 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_2594ff84-3d64-41da-98a5-78be9e98ad3d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22f8891fc10bb8c305de18eb9540699e7b8a01ce [2020-11-28 07:42:52,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:52,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:52,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:52,808 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:52,809 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:52,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2020-11-28 07:42:52,928 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/data/3dbebc0d7/fbf80df43a1a4faf9a0ceee1eddcc767/FLAG126b5e40e [2020-11-28 07:42:53,391 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:53,392 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/sv-benchmarks/c/bitvector/num_conversion_1.c [2020-11-28 07:42:53,403 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/data/3dbebc0d7/fbf80df43a1a4faf9a0ceee1eddcc767/FLAG126b5e40e [2020-11-28 07:42:53,761 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/data/3dbebc0d7/fbf80df43a1a4faf9a0ceee1eddcc767 [2020-11-28 07:42:53,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:53,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:53,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:53,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:53,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:53,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:53" (1/1) ... [2020-11-28 07:42:53,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5222a701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:53, skipping insertion in model container [2020-11-28 07:42:53,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:53" (1/1) ... [2020-11-28 07:42:53,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:53,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:42:53,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:54,007 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:42:54,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:54,038 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:42:54,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54 WrapperNode [2020-11-28 07:42:54,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:54,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:54,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:42:54,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:42:54,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (1/1) ... [2020-11-28 07:42:54,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (1/1) ... [2020-11-28 07:42:54,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:54,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:42:54,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:42:54,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:42:54,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (1/1) ... [2020-11-28 07:42:54,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (1/1) ... [2020-11-28 07:42:54,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (1/1) ... [2020-11-28 07:42:54,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (1/1) ... [2020-11-28 07:42:54,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (1/1) ... [2020-11-28 07:42:54,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (1/1) ... [2020-11-28 07:42:54,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (1/1) ... [2020-11-28 07:42:54,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:42:54,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:42:54,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:42:54,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:42:54,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:42:54,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:42:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:42:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:42:54,640 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:42:54,640 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:42:54,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:54 BoogieIcfgContainer [2020-11-28 07:42:54,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:42:54,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:42:54,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:42:54,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:42:54,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:42:53" (1/3) ... [2020-11-28 07:42:54,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a45466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:54, skipping insertion in model container [2020-11-28 07:42:54,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:54" (2/3) ... [2020-11-28 07:42:54,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a45466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:54, skipping insertion in model container [2020-11-28 07:42:54,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:54" (3/3) ... [2020-11-28 07:42:54,651 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2020-11-28 07:42:54,662 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:42:54,666 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:42:54,678 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:42:54,701 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:42:54,702 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:42:54,702 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:42:54,702 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:42:54,702 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:42:54,702 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:42:54,702 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:42:54,703 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:42:54,714 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-11-28 07:42:54,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:42:54,718 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:54,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:42:54,719 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:54,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:54,724 INFO L82 PathProgramCache]: Analyzing trace with hash 2131339, now seen corresponding path program 1 times [2020-11-28 07:42:54,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:54,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730338711] [2020-11-28 07:42:54,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:54,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730338711] [2020-11-28 07:42:54,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:54,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:54,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886708378] [2020-11-28 07:42:54,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:54,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:54,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:54,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:54,917 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-11-28 07:42:54,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:54,962 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-11-28 07:42:54,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:54,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-28 07:42:54,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:54,978 INFO L225 Difference]: With dead ends: 13 [2020-11-28 07:42:54,979 INFO L226 Difference]: Without dead ends: 6 [2020-11-28 07:42:54,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:55,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2020-11-28 07:42:55,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-11-28 07:42:55,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 07:42:55,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2020-11-28 07:42:55,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2020-11-28 07:42:55,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:55,015 INFO L481 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-11-28 07:42:55,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:55,015 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2020-11-28 07:42:55,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:42:55,016 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:55,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:42:55,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:42:55,017 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:55,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:55,022 INFO L82 PathProgramCache]: Analyzing trace with hash 66033034, now seen corresponding path program 1 times [2020-11-28 07:42:55,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:55,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029864501] [2020-11-28 07:42:55,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:55,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029864501] [2020-11-28 07:42:55,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939166621] [2020-11-28 07:42:55,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:42:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:55,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:42:55,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:55,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:55,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:55,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:55,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1123952467] [2020-11-28 07:42:55,302 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-11-28 07:42:55,302 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:42:55,307 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:42:55,311 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:42:55,312 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:42:55,813 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:42:55,971 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-11-28 07:42:56,206 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-11-28 07:42:56,210 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:42:56,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:42:56,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2020-11-28 07:42:56,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749147182] [2020-11-28 07:42:56,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:42:56,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:56,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:42:56,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:42:56,213 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 7 states. [2020-11-28 07:42:56,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:56,267 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2020-11-28 07:42:56,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:42:56,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 5 [2020-11-28 07:42:56,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:56,269 INFO L225 Difference]: With dead ends: 12 [2020-11-28 07:42:56,269 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 07:42:56,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-11-28 07:42:56,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 07:42:56,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 07:42:56,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 07:42:56,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-28 07:42:56,272 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2020-11-28 07:42:56,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:56,272 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-28 07:42:56,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:42:56,272 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-28 07:42:56,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:42:56,273 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:56,273 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2020-11-28 07:42:56,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:42:56,474 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:56,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:56,475 INFO L82 PathProgramCache]: Analyzing trace with hash 56888651, now seen corresponding path program 2 times [2020-11-28 07:42:56,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:56,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210110239] [2020-11-28 07:42:56,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:56,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210110239] [2020-11-28 07:42:56,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695919188] [2020-11-28 07:42:56,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:42:56,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-28 07:42:56,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 07:42:56,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 07:42:56,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:56,700 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:56,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:56,804 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:56,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2001744560] [2020-11-28 07:42:56,807 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-11-28 07:42:56,807 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:42:56,808 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:42:56,808 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:42:56,808 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:42:56,951 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:42:57,125 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-11-28 07:42:57,395 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-11-28 07:42:57,396 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:42:57,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:42:57,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2020-11-28 07:42:57,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504965707] [2020-11-28 07:42:57,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-28 07:42:57,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:57,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-28 07:42:57,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-11-28 07:42:57,399 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 16 states. [2020-11-28 07:42:59,709 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-28 07:43:02,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:02,034 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2020-11-28 07:43:02,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 07:43:02,036 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 8 [2020-11-28 07:43:02,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:02,036 INFO L225 Difference]: With dead ends: 16 [2020-11-28 07:43:02,036 INFO L226 Difference]: Without dead ends: 13 [2020-11-28 07:43:02,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2020-11-28 07:43:02,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-28 07:43:02,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-28 07:43:02,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 07:43:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-28 07:43:02,041 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2020-11-28 07:43:02,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:02,041 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-28 07:43:02,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-28 07:43:02,041 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-28 07:43:02,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:43:02,042 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:02,042 INFO L422 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1] [2020-11-28 07:43:02,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:02,243 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:02,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:02,243 INFO L82 PathProgramCache]: Analyzing trace with hash 639481099, now seen corresponding path program 3 times [2020-11-28 07:43:02,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:02,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680431941] [2020-11-28 07:43:02,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:43:02,303 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:43:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:43:02,337 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:43:02,361 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:43:02,361 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:43:02,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-11-28 07:43:02,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:43:02 BoogieIcfgContainer [2020-11-28 07:43:02,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:43:02,392 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:43:02,393 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:43:02,393 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:43:02,394 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:54" (3/4) ... [2020-11-28 07:43:02,396 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:43:02,397 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:43:02,399 INFO L168 Benchmark]: Toolchain (without parser) took 8630.93 ms. Allocated memory was 77.6 MB in the beginning and 125.8 MB in the end (delta: 48.2 MB). Free memory was 43.8 MB in the beginning and 89.2 MB in the end (delta: -45.4 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:02,401 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 77.6 MB. Free memory was 50.3 MB in the beginning and 50.3 MB in the end (delta: 26.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:02,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.17 ms. Allocated memory was 77.6 MB in the beginning and 104.9 MB in the end (delta: 27.3 MB). Free memory was 43.6 MB in the beginning and 82.4 MB in the end (delta: -38.8 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:02,407 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.82 ms. Allocated memory is still 104.9 MB. Free memory was 82.4 MB in the beginning and 81.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:02,407 INFO L168 Benchmark]: Boogie Preprocessor took 20.69 ms. Allocated memory is still 104.9 MB. Free memory was 81.0 MB in the beginning and 80.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:02,408 INFO L168 Benchmark]: RCFGBuilder took 549.66 ms. Allocated memory is still 104.9 MB. Free memory was 80.0 MB in the beginning and 65.0 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:02,409 INFO L168 Benchmark]: TraceAbstraction took 7747.60 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 64.6 MB in the beginning and 89.2 MB in the end (delta: -24.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:02,409 INFO L168 Benchmark]: Witness Printer took 4.32 ms. Allocated memory is still 125.8 MB. Free memory is still 89.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:02,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 77.6 MB. Free memory was 50.3 MB in the beginning and 50.3 MB in the end (delta: 26.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.17 ms. Allocated memory was 77.6 MB in the beginning and 104.9 MB in the end (delta: 27.3 MB). Free memory was 43.6 MB in the beginning and 82.4 MB in the end (delta: -38.8 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.82 ms. Allocated memory is still 104.9 MB. Free memory was 82.4 MB in the beginning and 81.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.69 ms. Allocated memory is still 104.9 MB. Free memory was 81.0 MB in the beginning and 80.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 549.66 ms. Allocated memory is still 104.9 MB. Free memory was 80.0 MB in the beginning and 65.0 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7747.60 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 64.6 MB in the beginning and 89.2 MB in the end (delta: -24.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.32 ms. Allocated memory is still 125.8 MB. Free memory is still 89.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftLeft at line 24, overapproximation of bitwiseAnd at line 25. Possible FailurePath: [L16] unsigned char x; [L17] unsigned char y; [L18] unsigned char c; [L20] x = 37 [L21] y = 0 [L22] c = 0 [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND TRUE bit != (unsigned char)0 [L27] y = y + i [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND TRUE bit != (unsigned char)0 [L27] y = y + i [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND TRUE bit != (unsigned char)0 [L27] y = y + i [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND TRUE bit != (unsigned char)0 [L27] y = y + i [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND TRUE bit != (unsigned char)0 [L27] y = y + i [L29] c = c + ((unsigned char)1) [L23] COND FALSE !(c < (unsigned char)8) [L7] COND TRUE !(cond) [L3] __assert_fail("0", "num_conversion_1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.6s, OverallIterations: 4, TraceHistogramMax: 8, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 24 SDs, 0 SdLazy, 51 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=3, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1126 SizeOfPredicates, 2 NumberOfNonLiveVariables, 110 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:43:05,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:43:05,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:43:05,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:43:05,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:43:05,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:43:05,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:43:05,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:43:05,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:43:05,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:43:05,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:43:05,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:43:05,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:43:05,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:43:05,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:43:05,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:43:05,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:43:05,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:43:05,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:43:05,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:43:05,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:43:05,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:43:05,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:43:05,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:43:05,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:43:05,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:43:05,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:43:05,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:43:05,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:43:05,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:43:05,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:43:05,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:43:05,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:43:05,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:43:05,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:43:05,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:43:05,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:43:05,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:43:05,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:43:05,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:43:05,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:43:05,172 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:43:05,216 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:43:05,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:43:05,219 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:43:05,219 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:43:05,219 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:43:05,219 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:43:05,220 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:43:05,220 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:43:05,220 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:43:05,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:43:05,223 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:43:05,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:43:05,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:43:05,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:43:05,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:43:05,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:43:05,224 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:43:05,224 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:43:05,224 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:43:05,225 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:43:05,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:43:05,225 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:43:05,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:43:05,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:43:05,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:43:05,226 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:43:05,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:43:05,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:43:05,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:43:05,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:43:05,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:43:05,227 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:43:05,228 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:43:05,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:43:05,228 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:43:05,229 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:43:05,229 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_2594ff84-3d64-41da-98a5-78be9e98ad3d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22f8891fc10bb8c305de18eb9540699e7b8a01ce [2020-11-28 07:43:05,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:43:05,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:43:05,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:43:05,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:43:05,688 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:43:05,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2020-11-28 07:43:05,770 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/data/9a89ccc93/ac45a6019892434daccb08f74e082f83/FLAG998f81119 [2020-11-28 07:43:06,332 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:43:06,333 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/sv-benchmarks/c/bitvector/num_conversion_1.c [2020-11-28 07:43:06,339 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/data/9a89ccc93/ac45a6019892434daccb08f74e082f83/FLAG998f81119 [2020-11-28 07:43:06,726 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/data/9a89ccc93/ac45a6019892434daccb08f74e082f83 [2020-11-28 07:43:06,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:43:06,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:43:06,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:06,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:43:06,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:43:06,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:06" (1/1) ... [2020-11-28 07:43:06,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1afa90ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:06, skipping insertion in model container [2020-11-28 07:43:06,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:06" (1/1) ... [2020-11-28 07:43:06,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:43:06,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:43:06,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:06,967 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:43:06,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:07,006 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:43:07,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:07 WrapperNode [2020-11-28 07:43:07,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:07,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:07,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:43:07,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:43:07,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:07" (1/1) ... [2020-11-28 07:43:07,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:07" (1/1) ... [2020-11-28 07:43:07,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:07,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:43:07,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:43:07,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:43:07,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:07" (1/1) ... [2020-11-28 07:43:07,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:07" (1/1) ... [2020-11-28 07:43:07,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:07" (1/1) ... [2020-11-28 07:43:07,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:07" (1/1) ... [2020-11-28 07:43:07,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:07" (1/1) ... [2020-11-28 07:43:07,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:07" (1/1) ... [2020-11-28 07:43:07,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:07" (1/1) ... [2020-11-28 07:43:07,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:43:07,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:43:07,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:43:07,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:43:07,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:43:07,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:43:07,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:43:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:43:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:43:07,592 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:43:07,593 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:43:07,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:07 BoogieIcfgContainer [2020-11-28 07:43:07,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:43:07,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:43:07,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:43:07,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:43:07,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:43:06" (1/3) ... [2020-11-28 07:43:07,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d090d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:07, skipping insertion in model container [2020-11-28 07:43:07,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:07" (2/3) ... [2020-11-28 07:43:07,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d090d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:07, skipping insertion in model container [2020-11-28 07:43:07,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:07" (3/3) ... [2020-11-28 07:43:07,602 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2020-11-28 07:43:07,628 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:43:07,631 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:43:07,642 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:43:07,684 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:43:07,684 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:43:07,685 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:43:07,685 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:43:07,685 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:43:07,685 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:43:07,685 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:43:07,686 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:43:07,699 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-28 07:43:07,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:43:07,715 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:07,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:43:07,716 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:07,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:07,721 INFO L82 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2020-11-28 07:43:07,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:07,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59201754] [2020-11-28 07:43:07,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:07,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:43:07,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:07,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:07,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:07,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59201754] [2020-11-28 07:43:07,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:07,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:43:07,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470264399] [2020-11-28 07:43:07,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:43:07,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:07,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:43:07,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:43:07,909 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-28 07:43:07,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:07,934 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-11-28 07:43:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:43:07,935 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-28 07:43:07,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:07,948 INFO L225 Difference]: With dead ends: 22 [2020-11-28 07:43:07,948 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 07:43:07,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:43:07,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 07:43:07,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 07:43:07,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 07:43:07,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-11-28 07:43:07,984 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2020-11-28 07:43:07,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:07,984 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-11-28 07:43:07,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:43:07,985 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-11-28 07:43:07,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:43:07,985 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:07,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:43:08,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:43:08,209 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:08,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:08,210 INFO L82 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2020-11-28 07:43:08,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:08,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903372841] [2020-11-28 07:43:08,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:08,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:43:08,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:08,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:08,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:08,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903372841] [2020-11-28 07:43:08,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:08,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:43:08,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678215353] [2020-11-28 07:43:08,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:43:08,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:08,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:43:08,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:43:08,303 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2020-11-28 07:43:08,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:08,335 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2020-11-28 07:43:08,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:43:08,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-28 07:43:08,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:08,337 INFO L225 Difference]: With dead ends: 17 [2020-11-28 07:43:08,337 INFO L226 Difference]: Without dead ends: 13 [2020-11-28 07:43:08,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:43:08,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-28 07:43:08,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-28 07:43:08,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 07:43:08,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-11-28 07:43:08,342 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 6 [2020-11-28 07:43:08,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:08,343 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-11-28 07:43:08,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:43:08,343 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-11-28 07:43:08,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:43:08,344 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:08,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:08,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:43:08,564 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:08,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:08,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1950053902, now seen corresponding path program 1 times [2020-11-28 07:43:08,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:08,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256050425] [2020-11-28 07:43:08,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:08,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:43:08,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:08,650 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:43:08,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:43:08,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256050425] [2020-11-28 07:43:08,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:08,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:43:08,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74617488] [2020-11-28 07:43:08,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:43:08,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:08,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:43:08,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:43:08,710 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 6 states. [2020-11-28 07:43:08,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:08,774 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-11-28 07:43:08,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:43:08,777 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-28 07:43:08,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:08,778 INFO L225 Difference]: With dead ends: 28 [2020-11-28 07:43:08,778 INFO L226 Difference]: Without dead ends: 19 [2020-11-28 07:43:08,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:43:08,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-28 07:43:08,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2020-11-28 07:43:08,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 07:43:08,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-11-28 07:43:08,782 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 12 [2020-11-28 07:43:08,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:08,783 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-11-28 07:43:08,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:43:08,783 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-11-28 07:43:08,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:43:08,783 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:08,784 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:08,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:43:08,984 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:08,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:08,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1664855024, now seen corresponding path program 1 times [2020-11-28 07:43:08,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:08,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969767671] [2020-11-28 07:43:08,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:09,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:43:09,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:09,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:09,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:09,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:09,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969767671] [2020-11-28 07:43:09,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1374055402] [2020-11-28 07:43:09,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-28 07:43:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:09,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:43:09,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:09,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:09,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:09,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790934127] [2020-11-28 07:43:09,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:09,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:43:09,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:09,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:09,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:09,388 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:09,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-28 07:43:09,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 6] total 10 [2020-11-28 07:43:09,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322935120] [2020-11-28 07:43:09,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:43:09,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:09,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:43:09,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:43:09,391 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 10 states. [2020-11-28 07:43:09,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:09,567 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2020-11-28 07:43:09,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 07:43:09,568 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-11-28 07:43:09,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:09,569 INFO L225 Difference]: With dead ends: 29 [2020-11-28 07:43:09,569 INFO L226 Difference]: Without dead ends: 25 [2020-11-28 07:43:09,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:43:09,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-28 07:43:09,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-28 07:43:09,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 07:43:09,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-11-28 07:43:09,576 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 12 [2020-11-28 07:43:09,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:09,577 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-11-28 07:43:09,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:43:09,577 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-11-28 07:43:09,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 07:43:09,578 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:09,578 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:10,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,6 cvc4 --incremental --print-success --lang smt --rewrite-divk,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:10,195 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:10,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:10,196 INFO L82 PathProgramCache]: Analyzing trace with hash 2085526576, now seen corresponding path program 2 times [2020-11-28 07:43:10,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:10,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682717317] [2020-11-28 07:43:10,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:10,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 07:43:10,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 07:43:10,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:43:10,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:10,341 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 07:43:10,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:10,439 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 07:43:10,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682717317] [2020-11-28 07:43:10,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1329852734] [2020-11-28 07:43:10,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-28 07:43:10,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 07:43:10,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 07:43:10,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:43:10,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 07:43:10,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 07:43:10,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965457668] [2020-11-28 07:43:10,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:10,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 07:43:10,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 07:43:10,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 07:43:10,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 07:43:10,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 07:43:10,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-28 07:43:10,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 13 [2020-11-28 07:43:10,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523609145] [2020-11-28 07:43:10,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 07:43:10,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:10,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 07:43:10,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:43:10,789 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 13 states. [2020-11-28 07:43:11,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:11,197 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2020-11-28 07:43:11,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-28 07:43:11,199 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2020-11-28 07:43:11,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:11,200 INFO L225 Difference]: With dead ends: 54 [2020-11-28 07:43:11,200 INFO L226 Difference]: Without dead ends: 39 [2020-11-28 07:43:11,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2020-11-28 07:43:11,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-28 07:43:11,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2020-11-28 07:43:11,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-28 07:43:11,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-11-28 07:43:11,206 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 24 [2020-11-28 07:43:11,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:11,210 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-11-28 07:43:11,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 07:43:11,210 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-11-28 07:43:11,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 07:43:11,211 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:11,212 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:11,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk,8 mathsat -unsat_core_generation=3,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:11,816 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:11,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:11,816 INFO L82 PathProgramCache]: Analyzing trace with hash -986835344, now seen corresponding path program 3 times [2020-11-28 07:43:11,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:11,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75130573] [2020-11-28 07:43:11,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/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 [2020-11-28 07:43:11,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-28 07:43:11,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 07:43:11,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:43:11,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:11,953 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-11-28 07:43:11,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:12,109 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-11-28 07:43:12,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75130573] [2020-11-28 07:43:12,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1176260047] [2020-11-28 07:43:12,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-28 07:43:12,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-28 07:43:12,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 07:43:12,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:43:12,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-11-28 07:43:12,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:12,304 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-11-28 07:43:12,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16801541] [2020-11-28 07:43:12,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:12,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-28 07:43:12,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 07:43:12,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:43:12,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:12,396 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-11-28 07:43:12,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:12,435 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-11-28 07:43:12,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-28 07:43:12,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2020-11-28 07:43:12,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299038006] [2020-11-28 07:43:12,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:43:12,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:12,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:43:12,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:43:12,438 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 10 states. [2020-11-28 07:43:12,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:12,744 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2020-11-28 07:43:12,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 07:43:12,744 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-11-28 07:43:12,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:12,745 INFO L225 Difference]: With dead ends: 53 [2020-11-28 07:43:12,745 INFO L226 Difference]: Without dead ends: 31 [2020-11-28 07:43:12,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-11-28 07:43:12,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-28 07:43:12,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-28 07:43:12,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 07:43:12,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-11-28 07:43:12,752 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 24 [2020-11-28 07:43:12,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:12,752 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-11-28 07:43:12,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:43:12,752 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-11-28 07:43:12,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 07:43:12,753 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:12,753 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:13,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 mathsat -unsat_core_generation=3 [2020-11-28 07:43:13,367 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:13,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:13,367 INFO L82 PathProgramCache]: Analyzing trace with hash -29656432, now seen corresponding path program 4 times [2020-11-28 07:43:13,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:13,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227925930] [2020-11-28 07:43:13,368 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/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 [2020-11-28 07:43:13,412 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 07:43:13,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 07:43:13,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-28 07:43:13,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-28 07:43:13,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:14,469 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-28 07:43:14,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227925930] [2020-11-28 07:43:14,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [861853733] [2020-11-28 07:43:14,470 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-28 07:43:14,617 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 07:43:14,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 07:43:14,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-28 07:43:14,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:14,638 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-28 07:43:14,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-28 07:43:14,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190304268] [2020-11-28 07:43:14,708 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:14,760 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 07:43:14,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 07:43:14,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-28 07:43:14,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:15,126 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:15,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:17,080 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:17,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-28 07:43:17,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15, 15, 19, 20] total 49 [2020-11-28 07:43:17,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377105427] [2020-11-28 07:43:17,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-11-28 07:43:17,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:17,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-11-28 07:43:17,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=1939, Unknown=0, NotChecked=0, Total=2352 [2020-11-28 07:43:17,086 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 49 states. [2020-11-28 07:43:18,180 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 124 [2020-11-28 07:43:18,473 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-11-28 07:43:19,291 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2020-11-28 07:43:19,896 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-28 07:43:21,205 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 21 [2020-11-28 07:43:22,325 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 125 [2020-11-28 07:43:23,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:23,268 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-11-28 07:43:23,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-28 07:43:23,273 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 30 [2020-11-28 07:43:23,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:23,275 INFO L225 Difference]: With dead ends: 80 [2020-11-28 07:43:23,275 INFO L226 Difference]: Without dead ends: 62 [2020-11-28 07:43:23,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1018, Invalid=4094, Unknown=0, NotChecked=0, Total=5112 [2020-11-28 07:43:23,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-28 07:43:23,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2020-11-28 07:43:23,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-28 07:43:23,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-11-28 07:43:23,288 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 30 [2020-11-28 07:43:23,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:23,289 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-11-28 07:43:23,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-11-28 07:43:23,289 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-11-28 07:43:23,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-28 07:43:23,290 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:23,291 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 7, 4, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:23,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 mathsat -unsat_core_generation=3,15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-28 07:43:23,915 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:23,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:23,916 INFO L82 PathProgramCache]: Analyzing trace with hash -704967655, now seen corresponding path program 5 times [2020-11-28 07:43:23,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:23,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15133697] [2020-11-28 07:43:23,917 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:23,963 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-28 07:43:23,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 07:43:23,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-28 07:43:23,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 103 proven. 69 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 07:43:25,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:26,726 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 150 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 07:43:26,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15133697] [2020-11-28 07:43:26,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [149971832] [2020-11-28 07:43:26,727 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/cvc4 Starting monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-28 07:43:26,813 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-28 07:43:26,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 07:43:26,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-28 07:43:26,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:27,632 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 07:43:27,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:28,303 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 07:43:28,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2020-11-28 07:43:28,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18, 18] imperfect sequences [20, 20] total 54 [2020-11-28 07:43:28,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747718671] [2020-11-28 07:43:28,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-11-28 07:43:28,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:28,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-11-28 07:43:28,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=2078, Unknown=0, NotChecked=0, Total=2862 [2020-11-28 07:43:28,306 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 34 states. [2020-11-28 07:43:28,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:28,537 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-11-28 07:43:28,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-28 07:43:28,540 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 39 [2020-11-28 07:43:28,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:28,541 INFO L225 Difference]: With dead ends: 58 [2020-11-28 07:43:28,541 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:43:28,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=784, Invalid=2078, Unknown=0, NotChecked=0, Total=2862 [2020-11-28 07:43:28,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:43:28,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:43:28,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:43:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:43:28,543 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2020-11-28 07:43:28,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:28,543 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:43:28,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-11-28 07:43:28,543 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:43:28,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:43:28,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3,18 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-28 07:43:28,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:43:29,121 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 270 [2020-11-28 07:43:30,172 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 267 DAG size of output: 121 [2020-11-28 07:43:30,176 INFO L277 CegarLoopResult]: At program point L33(lines 14 34) the Hoare annotation is: true [2020-11-28 07:43:30,176 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:43:30,176 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 30) the Hoare annotation is: (let ((.cse0 (= (_ bv37 8) ULTIMATE.start_main_~y~0)) (.cse19 (exists ((v_ULTIMATE.start_main_~c~0_56 (_ BitVec 8))) (let ((.cse20 ((_ zero_extend 24) v_ULTIMATE.start_main_~c~0_56))) (and (= ((_ extract 7 0) (bvadd .cse20 (_ bv1 32))) ULTIMATE.start_main_~c~0) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv37 32) ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse20)))))) (_ bv0 32))))))) (.cse10 (= (_ bv5 8) ULTIMATE.start_main_~y~0)) (.cse11 (= (_ bv1 8) ULTIMATE.start_main_~y~0)) (.cse9 (= (_ bv37 8) ULTIMATE.start_main_~x~0))) (or (and .cse0 (exists ((v_ULTIMATE.start_main_~c~0_125 (_ BitVec 8)) (ULTIMATE.start_main_~x~0 (_ BitVec 8))) (let ((.cse6 ((_ zero_extend 24) v_ULTIMATE.start_main_~c~0_125))) (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse6 (_ bv1 32)))))) (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse5 (_ bv1 32)))))) (let ((.cse7 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse1 (_ bv1 32)))))) (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse7 (_ bv1 32)))))) (let ((.cse8 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse3 (_ bv1 32)))))) (let ((.cse4 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse8 (_ bv1 32))))) (.cse2 ((_ zero_extend 24) ULTIMATE.start_main_~x~0))) (and (bvslt .cse1 (_ bv8 32)) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse2 ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse3)))))) (_ bv0 32))) (bvslt .cse4 (_ bv8 32)) (= ((_ extract 7 0) (bvadd .cse4 (_ bv1 32))) ULTIMATE.start_main_~c~0) (bvslt .cse5 (_ bv8 32)) (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse2 ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse6))))))) (bvslt .cse7 (_ bv8 32)) (bvslt .cse8 (_ bv8 32)) (bvslt .cse6 (_ bv8 32))))))))))) (= (_ bv0 32) ((_ zero_extend 24) ULTIMATE.start_main_~bit~0)) .cse9) (and .cse10 (= (_ bv4 8) ULTIMATE.start_main_~c~0) .cse9) (and (= (_ bv2 8) ULTIMATE.start_main_~c~0) .cse9 .cse11) (and .cse0 .cse9 (exists ((ULTIMATE.start_main_~x~0 (_ BitVec 8)) (v_ULTIMATE.start_main_~c~0_125 (_ BitVec 8))) (let ((.cse16 ((_ zero_extend 24) v_ULTIMATE.start_main_~c~0_125))) (let ((.cse15 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse16 (_ bv1 32)))))) (let ((.cse12 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse15 (_ bv1 32)))))) (let ((.cse17 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse12 (_ bv1 32)))))) (let ((.cse14 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse17 (_ bv1 32)))))) (let ((.cse13 ((_ zero_extend 24) ULTIMATE.start_main_~x~0)) (.cse18 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse14 (_ bv1 32)))))) (and (bvslt .cse12 (_ bv8 32)) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse13 ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse14)))))) (_ bv0 32))) (bvslt .cse15 (_ bv8 32)) (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse13 ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse16))))))) (bvslt .cse17 (_ bv8 32)) (= ((_ extract 7 0) (bvadd .cse18 (_ bv1 32))) ULTIMATE.start_main_~c~0) (bvslt .cse18 (_ bv8 32)) (bvslt .cse16 (_ bv8 32)))))))))) .cse19) (and .cse10 (= (_ bv0 8) (bvadd ULTIMATE.start_main_~bit~0 (_ bv252 8))) .cse9 (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ULTIMATE.start_main_~x~0) ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ULTIMATE.start_main_~c~0) (_ bv1 32)))) (_ bv1 32)))))))))) (_ bv0 32))) .cse19) (and .cse10 .cse9 (= (_ bv5 8) ULTIMATE.start_main_~c~0)) (and (= (_ bv0 8) (bvadd ULTIMATE.start_main_~bit~0 (_ bv255 8))) (= (_ bv1 8) ULTIMATE.start_main_~c~0) .cse9 .cse11) (and (= (_ bv0 8) ULTIMATE.start_main_~c~0) .cse9 (= (_ bv0 8) ULTIMATE.start_main_~y~0)))) [2020-11-28 07:43:30,176 INFO L274 CegarLoopResult]: For program point L23-3(lines 23 30) no Hoare annotation was computed. [2020-11-28 07:43:30,177 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-11-28 07:43:30,177 INFO L277 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2020-11-28 07:43:30,177 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 07:43:30,177 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 07:43:30,177 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:43:30,177 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 07:43:30,177 INFO L274 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-11-28 07:43:30,177 INFO L274 CegarLoopResult]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2020-11-28 07:43:30,177 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 07:43:30,177 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-11-28 07:43:30,188 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,189 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-11-28 07:43:30,189 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,189 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,190 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,190 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,191 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-11-28 07:43:30,191 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,192 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,192 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,192 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-11-28 07:43:30,196 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,196 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,196 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-11-28 07:43:30,197 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,197 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,197 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,197 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,198 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,198 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] [2020-11-28 07:43:30,198 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] [2020-11-28 07:43:30,198 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] [2020-11-28 07:43:30,199 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] [2020-11-28 07:43:30,216 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,216 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-11-28 07:43:30,216 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,217 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,217 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,218 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,218 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-11-28 07:43:30,218 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,218 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,219 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,219 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,219 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,219 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-11-28 07:43:30,220 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,220 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,220 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-11-28 07:43:30,220 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,223 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,223 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,224 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,224 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,224 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] [2020-11-28 07:43:30,224 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] [2020-11-28 07:43:30,225 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] [2020-11-28 07:43:30,225 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] [2020-11-28 07:43:30,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:43:30 BoogieIcfgContainer [2020-11-28 07:43:30,231 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:43:30,232 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:43:30,232 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:43:30,232 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:43:30,233 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:07" (3/4) ... [2020-11-28 07:43:30,236 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:43:30,245 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-28 07:43:30,246 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:43:30,246 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:43:30,246 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:43:30,275 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((37bv8 == y && (\exists v_ULTIMATE.start_main_~c~0_125 : bv8, ULTIMATE.start_main_~x~0 : bv8 :: (((((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32) && !(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(ULTIMATE.start_main_~x~0), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]) == 0bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0] == c) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 8bv32)) && 0bv32 == ~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(ULTIMATE.start_main_~x~0), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125))[7:0]))[7:0])) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 8bv32))) && 0bv32 == ~zero_extendFrom8To32(bit)) && 37bv8 == x) || ((5bv8 == y && 4bv8 == c) && 37bv8 == x)) || ((2bv8 == c && 37bv8 == x) && 1bv8 == y)) || (((37bv8 == y && 37bv8 == x) && (\exists ULTIMATE.start_main_~x~0 : bv8, v_ULTIMATE.start_main_~c~0_125 : bv8 :: ((((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32) && !(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(ULTIMATE.start_main_~x~0), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]) == 0bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 8bv32)) && 0bv32 == ~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(ULTIMATE.start_main_~x~0), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125))[7:0]))[7:0])) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0] == c) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 8bv32))) && (\exists v_ULTIMATE.start_main_~c~0_56 : bv8 :: ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_56), 1bv32)[7:0] == c && !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_56))[7:0]))[7:0]) == 0bv32)))) || ((((5bv8 == y && 0bv8 == ~bvadd64(bit, 252bv8)) && 37bv8 == x) && !(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(x), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]) == 0bv32)) && (\exists v_ULTIMATE.start_main_~c~0_56 : bv8 :: ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_56), 1bv32)[7:0] == c && !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_56))[7:0]))[7:0]) == 0bv32)))) || ((5bv8 == y && 37bv8 == x) && 5bv8 == c)) || (((0bv8 == ~bvadd64(bit, 255bv8) && 1bv8 == c) && 37bv8 == x) && 1bv8 == y)) || ((0bv8 == c && 37bv8 == x) && 0bv8 == y) [2020-11-28 07:43:30,295 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2594ff84-3d64-41da-98a5-78be9e98ad3d/bin/utaipan/witness.graphml [2020-11-28 07:43:30,295 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:43:30,301 INFO L168 Benchmark]: Toolchain (without parser) took 23565.28 ms. Allocated memory was 56.6 MB in the beginning and 107.0 MB in the end (delta: 50.3 MB). Free memory was 35.9 MB in the beginning and 44.0 MB in the end (delta: -8.1 MB). Peak memory consumption was 40.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:30,302 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 56.6 MB. Free memory is still 38.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:30,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.50 ms. Allocated memory is still 56.6 MB. Free memory was 35.7 MB in the beginning and 26.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:30,303 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.93 ms. Allocated memory is still 56.6 MB. Free memory was 26.0 MB in the beginning and 40.9 MB in the end (delta: -14.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:30,303 INFO L168 Benchmark]: Boogie Preprocessor took 59.05 ms. Allocated memory is still 56.6 MB. Free memory was 40.9 MB in the beginning and 39.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:30,304 INFO L168 Benchmark]: RCFGBuilder took 481.89 ms. Allocated memory is still 56.6 MB. Free memory was 39.8 MB in the beginning and 28.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:30,304 INFO L168 Benchmark]: TraceAbstraction took 22635.42 ms. Allocated memory was 56.6 MB in the beginning and 107.0 MB in the end (delta: 50.3 MB). Free memory was 28.1 MB in the beginning and 46.1 MB in the end (delta: -18.1 MB). Peak memory consumption was 54.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:30,304 INFO L168 Benchmark]: Witness Printer took 63.55 ms. Allocated memory is still 107.0 MB. Free memory was 46.1 MB in the beginning and 44.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:30,307 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 56.6 MB. Free memory is still 38.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 274.50 ms. Allocated memory is still 56.6 MB. Free memory was 35.7 MB in the beginning and 26.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.93 ms. Allocated memory is still 56.6 MB. Free memory was 26.0 MB in the beginning and 40.9 MB in the end (delta: -14.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.05 ms. Allocated memory is still 56.6 MB. Free memory was 40.9 MB in the beginning and 39.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 481.89 ms. Allocated memory is still 56.6 MB. Free memory was 39.8 MB in the beginning and 28.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22635.42 ms. Allocated memory was 56.6 MB in the beginning and 107.0 MB in the end (delta: 50.3 MB). Free memory was 28.1 MB in the beginning and 46.1 MB in the end (delta: -18.1 MB). Peak memory consumption was 54.5 MB. Max. memory is 16.1 GB. * Witness Printer took 63.55 ms. Allocated memory is still 107.0 MB. Free memory was 46.1 MB in the beginning and 44.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant [2020-11-28 07:43:30,319 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,320 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-11-28 07:43:30,320 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,320 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,320 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,321 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,321 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-11-28 07:43:30,321 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,321 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,322 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,322 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,322 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,323 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-11-28 07:43:30,324 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,325 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,325 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-11-28 07:43:30,325 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,325 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,326 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,326 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,326 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,326 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] [2020-11-28 07:43:30,327 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] [2020-11-28 07:43:30,327 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] [2020-11-28 07:43:30,327 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] [2020-11-28 07:43:30,330 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,331 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-11-28 07:43:30,331 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,331 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,332 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,332 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,333 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-11-28 07:43:30,333 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,333 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,333 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,334 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,334 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,334 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-11-28 07:43:30,334 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,335 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,335 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-11-28 07:43:30,335 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,335 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,335 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,336 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,336 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_125,QUANTIFIED] [2020-11-28 07:43:30,336 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] [2020-11-28 07:43:30,336 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] [2020-11-28 07:43:30,337 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] [2020-11-28 07:43:30,337 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_56,QUANTIFIED] Derived loop invariant: (((((((((37bv8 == y && (\exists v_ULTIMATE.start_main_~c~0_125 : bv8, ULTIMATE.start_main_~x~0 : bv8 :: (((((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32) && !(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(ULTIMATE.start_main_~x~0), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]) == 0bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0] == c) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 8bv32)) && 0bv32 == ~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(ULTIMATE.start_main_~x~0), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125))[7:0]))[7:0])) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 8bv32))) && 0bv32 == ~zero_extendFrom8To32(bit)) && 37bv8 == x) || ((5bv8 == y && 4bv8 == c) && 37bv8 == x)) || ((2bv8 == c && 37bv8 == x) && 1bv8 == y)) || (((37bv8 == y && 37bv8 == x) && (\exists ULTIMATE.start_main_~x~0 : bv8, v_ULTIMATE.start_main_~c~0_125 : bv8 :: ((((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32) && !(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(ULTIMATE.start_main_~x~0), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]) == 0bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 8bv32)) && 0bv32 == ~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(ULTIMATE.start_main_~x~0), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125))[7:0]))[7:0])) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0] == c) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_125), 8bv32))) && (\exists v_ULTIMATE.start_main_~c~0_56 : bv8 :: ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_56), 1bv32)[7:0] == c && !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_56))[7:0]))[7:0]) == 0bv32)))) || ((((5bv8 == y && 0bv8 == ~bvadd64(bit, 252bv8)) && 37bv8 == x) && !(~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(x), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]) == 0bv32)) && (\exists v_ULTIMATE.start_main_~c~0_56 : bv8 :: ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_56), 1bv32)[7:0] == c && !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_56))[7:0]))[7:0]) == 0bv32)))) || ((5bv8 == y && 37bv8 == x) && 5bv8 == c)) || (((0bv8 == ~bvadd64(bit, 255bv8) && 1bv8 == c) && 37bv8 == x) && 1bv8 == y)) || ((0bv8 == c && 37bv8 == x) && 0bv8 == y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.2s, OverallIterations: 8, TraceHistogramMax: 11, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 351 SDslu, 337 SDs, 0 SdLazy, 829 SolverSat, 201 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 753 GetRequests, 570 SyntacticMatches, 8 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2297 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 8 MinimizatonAttempts, 23 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 16 NumberOfFragments, 458 HoareAnnotationTreeSize, 3 FomulaSimplifications, 127 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 1222 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 372 NumberOfCodeBlocks, 312 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 710 ConstructedInterpolants, 95 QuantifiedInterpolants, 398725 SizeOfPredicates, 71 NumberOfNonLiveVariables, 836 ConjunctsInSsa, 165 ConjunctsInUnsatCore, 34 InterpolantComputations, 8 PerfectInterpolantSequences, 1125/1908 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...