./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_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer --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 Automizer --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_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer --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 Automizer --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 03:11:06,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:11:06,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:11:06,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:11:06,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:11:06,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:11:06,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:11:06,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:11:06,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:11:06,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:11:06,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:11:06,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:11:06,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:11:06,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:11:06,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:11:06,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:11:06,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:11:06,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:11:06,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:11:06,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:11:06,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:11:06,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:11:06,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:11:06,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:11:06,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:11:06,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:11:06,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:11:06,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:11:06,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:11:06,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:11:06,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:11:06,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:11:06,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:11:06,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:11:06,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:11:06,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:11:06,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:11:06,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:11:06,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:11:06,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:11:06,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:11:06,533 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:11:06,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:11:06,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:11:06,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:11:06,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:11:06,600 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:11:06,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:11:06,600 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:11:06,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:11:06,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:11:06,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:11:06,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:11:06,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:11:06,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:11:06,604 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:11:06,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:11:06,604 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:11:06,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:11:06,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:11:06,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:11:06,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:11:06,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:11:06,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:11:06,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:11:06,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:11:06,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:11:06,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:11:06,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:11:06,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:11:06,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:11:06,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22f8891fc10bb8c305de18eb9540699e7b8a01ce [2020-11-28 03:11:06,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:11:06,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:11:06,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:11:06,965 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:11:06,966 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:11:06,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2020-11-28 03:11:07,049 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/data/98d7599dd/02f13fd8cde74b80b3c4cdfb4be16e33/FLAGcd8fd6236 [2020-11-28 03:11:07,580 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:11:07,581 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/sv-benchmarks/c/bitvector/num_conversion_1.c [2020-11-28 03:11:07,594 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/data/98d7599dd/02f13fd8cde74b80b3c4cdfb4be16e33/FLAGcd8fd6236 [2020-11-28 03:11:07,924 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/data/98d7599dd/02f13fd8cde74b80b3c4cdfb4be16e33 [2020-11-28 03:11:07,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:11:07,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:11:07,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:07,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:11:07,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:11:07,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:07" (1/1) ... [2020-11-28 03:11:07,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46ddbc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:07, skipping insertion in model container [2020-11-28 03:11:07,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:07" (1/1) ... [2020-11-28 03:11:07,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:11:07,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:11:08,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:08,202 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:11:08,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:08,245 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:11:08,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:08 WrapperNode [2020-11-28 03:11:08,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:08,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:11:08,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:11:08,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:11:08,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:08" (1/1) ... [2020-11-28 03:11:08,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:08" (1/1) ... [2020-11-28 03:11:08,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:11:08,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:11:08,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:11:08,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:11:08,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:08" (1/1) ... [2020-11-28 03:11:08,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:08" (1/1) ... [2020-11-28 03:11:08,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:08" (1/1) ... [2020-11-28 03:11:08,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:08" (1/1) ... [2020-11-28 03:11:08,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:08" (1/1) ... [2020-11-28 03:11:08,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:08" (1/1) ... [2020-11-28 03:11:08,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:08" (1/1) ... [2020-11-28 03:11:08,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:11:08,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:11:08,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:11:08,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:11:08,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/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 03:11:08,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:11:08,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:11:08,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:11:08,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:11:08,637 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:11:08,638 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 03:11:08,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:08 BoogieIcfgContainer [2020-11-28 03:11:08,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:11:08,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:11:08,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:11:08,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:11:08,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:11:07" (1/3) ... [2020-11-28 03:11:08,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7449ccda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:08, skipping insertion in model container [2020-11-28 03:11:08,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:08" (2/3) ... [2020-11-28 03:11:08,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7449ccda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:08, skipping insertion in model container [2020-11-28 03:11:08,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:08" (3/3) ... [2020-11-28 03:11:08,656 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2020-11-28 03:11:08,690 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:11:08,704 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:11:08,737 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:11:08,800 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:11:08,800 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:11:08,800 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:11:08,800 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:11:08,801 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:11:08,801 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:11:08,801 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:11:08,801 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:11:08,833 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-28 03:11:08,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:11:08,853 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:08,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:11:08,854 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:08,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:08,864 INFO L82 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2020-11-28 03:11:08,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:08,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653303230] [2020-11-28 03:11:08,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:09,060 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 03:11:09,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653303230] [2020-11-28 03:11:09,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:09,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:11:09,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939374848] [2020-11-28 03:11:09,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:11:09,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:09,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:11:09,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:11:09,099 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-28 03:11:09,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:09,121 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-11-28 03:11:09,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:11:09,123 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-28 03:11:09,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:09,135 INFO L225 Difference]: With dead ends: 22 [2020-11-28 03:11:09,136 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 03:11:09,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:11:09,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 03:11:09,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 03:11:09,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 03:11:09,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-11-28 03:11:09,200 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2020-11-28 03:11:09,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:09,200 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-11-28 03:11:09,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:11:09,202 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-11-28 03:11:09,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:11:09,202 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:09,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:11:09,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:11:09,204 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:09,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:09,207 INFO L82 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2020-11-28 03:11:09,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:09,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595736782] [2020-11-28 03:11:09,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:09,328 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 03:11:09,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595736782] [2020-11-28 03:11:09,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:09,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:11:09,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142953792] [2020-11-28 03:11:09,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:11:09,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:09,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:11:09,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:11:09,333 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2020-11-28 03:11:09,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:09,388 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-11-28 03:11:09,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:11:09,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 03:11:09,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:09,392 INFO L225 Difference]: With dead ends: 16 [2020-11-28 03:11:09,392 INFO L226 Difference]: Without dead ends: 12 [2020-11-28 03:11:09,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 03:11:09,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-28 03:11:09,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2020-11-28 03:11:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 03:11:09,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-11-28 03:11:09,397 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2020-11-28 03:11:09,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:09,397 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-11-28 03:11:09,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:11:09,398 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-11-28 03:11:09,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:11:09,398 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:09,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:09,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:11:09,399 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:09,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:09,400 INFO L82 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2020-11-28 03:11:09,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:09,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933572079] [2020-11-28 03:11:09,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:09,516 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 03:11:09,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933572079] [2020-11-28 03:11:09,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030585891] [2020-11-28 03:11:09,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/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 03:11:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:09,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:11:09,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:09,623 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 03:11:09,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:11:09,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-11-28 03:11:09,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731687517] [2020-11-28 03:11:09,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:11:09,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:09,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:11:09,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:11:09,627 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 5 states. [2020-11-28 03:11:09,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:09,675 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2020-11-28 03:11:09,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:11:09,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-28 03:11:09,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:09,678 INFO L225 Difference]: With dead ends: 19 [2020-11-28 03:11:09,678 INFO L226 Difference]: Without dead ends: 15 [2020-11-28 03:11:09,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:11:09,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-28 03:11:09,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2020-11-28 03:11:09,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 03:11:09,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-11-28 03:11:09,682 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2020-11-28 03:11:09,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:09,683 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-11-28 03:11:09,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:11:09,683 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-11-28 03:11:09,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:11:09,683 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:09,684 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:09,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 03:11:09,897 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:09,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:09,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1950053902, now seen corresponding path program 2 times [2020-11-28 03:11:09,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:09,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295993661] [2020-11-28 03:11:09,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:10,017 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 03:11:10,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295993661] [2020-11-28 03:11:10,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033135376] [2020-11-28 03:11:10,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/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 03:11:10,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:11:10,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:11:10,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:11:10,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:10,118 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 03:11:10,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:11:10,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-11-28 03:11:10,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644701867] [2020-11-28 03:11:10,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:11:10,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:10,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:11:10,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:11:10,121 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 7 states. [2020-11-28 03:11:10,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:10,172 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2020-11-28 03:11:10,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:11:10,175 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-11-28 03:11:10,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:10,176 INFO L225 Difference]: With dead ends: 22 [2020-11-28 03:11:10,176 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 03:11:10,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:11:10,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 03:11:10,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-11-28 03:11:10,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 03:11:10,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-11-28 03:11:10,186 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 12 [2020-11-28 03:11:10,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:10,188 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-11-28 03:11:10,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:11:10,188 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-11-28 03:11:10,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:11:10,190 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:10,190 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:10,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:11:10,412 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:10,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:10,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1268104729, now seen corresponding path program 3 times [2020-11-28 03:11:10,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:10,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234390919] [2020-11-28 03:11:10,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:10,570 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:10,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234390919] [2020-11-28 03:11:10,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133291340] [2020-11-28 03:11:10,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:11:10,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-28 03:11:10,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:11:10,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:11:10,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:10,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:10,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:11:10,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-11-28 03:11:10,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128710637] [2020-11-28 03:11:10,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:11:10,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:10,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:11:10,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:11:10,690 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 9 states. [2020-11-28 03:11:10,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:10,761 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2020-11-28 03:11:10,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:11:10,762 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-11-28 03:11:10,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:10,763 INFO L225 Difference]: With dead ends: 25 [2020-11-28 03:11:10,763 INFO L226 Difference]: Without dead ends: 21 [2020-11-28 03:11:10,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:11:10,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-28 03:11:10,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-11-28 03:11:10,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 03:11:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-11-28 03:11:10,768 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 15 [2020-11-28 03:11:10,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:10,769 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-11-28 03:11:10,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:11:10,769 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-11-28 03:11:10,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:11:10,770 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:10,770 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:10,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:11:10,971 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:10,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:10,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 4 times [2020-11-28 03:11:10,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:10,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725074859] [2020-11-28 03:11:10,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:11,139 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:11,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725074859] [2020-11-28 03:11:11,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548475137] [2020-11-28 03:11:11,140 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:11:11,196 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:11:11,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:11:11,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:11:11,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:11,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:11:11,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-11-28 03:11:11,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513531886] [2020-11-28 03:11:11,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:11:11,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:11,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:11:11,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:11:11,273 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 11 states. [2020-11-28 03:11:11,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:11,376 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2020-11-28 03:11:11,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:11:11,377 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-11-28 03:11:11,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:11,378 INFO L225 Difference]: With dead ends: 28 [2020-11-28 03:11:11,378 INFO L226 Difference]: Without dead ends: 24 [2020-11-28 03:11:11,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:11:11,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-28 03:11:11,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-11-28 03:11:11,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 03:11:11,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-11-28 03:11:11,385 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 18 [2020-11-28 03:11:11,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:11,385 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-11-28 03:11:11,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:11:11,386 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-11-28 03:11:11,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:11:11,387 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:11,387 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:11,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:11:11,608 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:11,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:11,609 INFO L82 PathProgramCache]: Analyzing trace with hash -133759111, now seen corresponding path program 5 times [2020-11-28 03:11:11,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:11,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431109454] [2020-11-28 03:11:11,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:11,819 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:11,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431109454] [2020-11-28 03:11:11,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407486494] [2020-11-28 03:11:11,820 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:11:11,878 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-28 03:11:11,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:11:11,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 03:11:11,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:11,953 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:11,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:11:11,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-11-28 03:11:11,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316765702] [2020-11-28 03:11:11,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 03:11:11,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:11,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 03:11:11,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:11:11,956 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 13 states. [2020-11-28 03:11:12,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:12,151 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2020-11-28 03:11:12,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:11:12,152 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2020-11-28 03:11:12,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:12,153 INFO L225 Difference]: With dead ends: 31 [2020-11-28 03:11:12,153 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 03:11:12,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:11:12,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 03:11:12,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-11-28 03:11:12,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 03:11:12,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-11-28 03:11:12,159 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 21 [2020-11-28 03:11:12,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:12,159 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-11-28 03:11:12,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 03:11:12,160 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2020-11-28 03:11:12,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 03:11:12,160 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:12,161 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:12,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-28 03:11:12,361 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:12,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:12,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1786738894, now seen corresponding path program 6 times [2020-11-28 03:11:12,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:12,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031336921] [2020-11-28 03:11:12,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:12,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031336921] [2020-11-28 03:11:12,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172271938] [2020-11-28 03:11:12,556 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/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 03:11:12,612 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-28 03:11:12,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:11:12,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-28 03:11:12,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:12,770 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:12,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:11:12,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2020-11-28 03:11:12,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054605102] [2020-11-28 03:11:12,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-28 03:11:12,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:12,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-28 03:11:12,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:11:12,772 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand 15 states. [2020-11-28 03:11:12,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:12,921 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2020-11-28 03:11:12,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:11:12,922 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2020-11-28 03:11:12,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:12,923 INFO L225 Difference]: With dead ends: 34 [2020-11-28 03:11:12,923 INFO L226 Difference]: Without dead ends: 30 [2020-11-28 03:11:12,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:11:12,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-28 03:11:12,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-11-28 03:11:12,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 03:11:12,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-11-28 03:11:12,929 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 24 [2020-11-28 03:11:12,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:12,930 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-11-28 03:11:12,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-28 03:11:12,930 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-11-28 03:11:12,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:11:12,931 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:12,931 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:13,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:11:13,144 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:13,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:13,145 INFO L82 PathProgramCache]: Analyzing trace with hash 387561689, now seen corresponding path program 7 times [2020-11-28 03:11:13,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:13,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445085084] [2020-11-28 03:11:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:13,355 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:13,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445085084] [2020-11-28 03:11:13,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620176464] [2020-11-28 03:11:13,356 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:11:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:13,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-28 03:11:13,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:13,575 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:13,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:11:13,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2020-11-28 03:11:13,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006973282] [2020-11-28 03:11:13,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-28 03:11:13,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:13,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-28 03:11:13,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-11-28 03:11:13,577 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 17 states. [2020-11-28 03:11:13,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:13,817 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2020-11-28 03:11:13,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 03:11:13,817 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 27 [2020-11-28 03:11:13,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:13,818 INFO L225 Difference]: With dead ends: 37 [2020-11-28 03:11:13,818 INFO L226 Difference]: Without dead ends: 33 [2020-11-28 03:11:13,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-11-28 03:11:13,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-28 03:11:13,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-11-28 03:11:13,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:11:13,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2020-11-28 03:11:13,824 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 27 [2020-11-28 03:11:13,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:13,824 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2020-11-28 03:11:13,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-28 03:11:13,825 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2020-11-28 03:11:13,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 03:11:13,825 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:13,826 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:14,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:11:14,054 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:14,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:14,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1720528430, now seen corresponding path program 8 times [2020-11-28 03:11:14,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:14,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387852127] [2020-11-28 03:11:14,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:14,085 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:14,112 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:14,147 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:11:14,147 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:11:14,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:11:14,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:11:14 BoogieIcfgContainer [2020-11-28 03:11:14,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:11:14,199 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:11:14,200 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:11:14,200 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:11:14,200 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:08" (3/4) ... [2020-11-28 03:11:14,204 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:11:14,204 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:11:14,207 INFO L168 Benchmark]: Toolchain (without parser) took 6276.97 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 82.4 MB in the beginning and 97.2 MB in the end (delta: -14.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:14,208 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 81.8 MB. Free memory was 40.5 MB in the beginning and 40.5 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:14,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.03 ms. Allocated memory is still 111.1 MB. Free memory was 82.2 MB in the beginning and 89.0 MB in the end (delta: -6.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:14,209 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.05 ms. Allocated memory is still 111.1 MB. Free memory was 89.0 MB in the beginning and 87.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:14,210 INFO L168 Benchmark]: Boogie Preprocessor took 56.05 ms. Allocated memory is still 111.1 MB. Free memory was 87.4 MB in the beginning and 86.7 MB in the end (delta: 776.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:14,211 INFO L168 Benchmark]: RCFGBuilder took 287.98 ms. Allocated memory is still 111.1 MB. Free memory was 86.7 MB in the beginning and 75.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:14,212 INFO L168 Benchmark]: TraceAbstraction took 5557.17 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 75.3 MB in the beginning and 97.2 MB in the end (delta: -21.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:14,213 INFO L168 Benchmark]: Witness Printer took 5.05 ms. Allocated memory is still 134.2 MB. Free memory is still 97.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:14,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 81.8 MB. Free memory was 40.5 MB in the beginning and 40.5 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.03 ms. Allocated memory is still 111.1 MB. Free memory was 82.2 MB in the beginning and 89.0 MB in the end (delta: -6.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.05 ms. Allocated memory is still 111.1 MB. Free memory was 89.0 MB in the beginning and 87.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.05 ms. Allocated memory is still 111.1 MB. Free memory was 87.4 MB in the beginning and 86.7 MB in the end (delta: 776.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 287.98 ms. Allocated memory is still 111.1 MB. Free memory was 86.7 MB in the beginning and 75.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5557.17 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 75.3 MB in the beginning and 97.2 MB in the end (delta: -21.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.05 ms. Allocated memory is still 134.2 MB. Free memory is still 97.2 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 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 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 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 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, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.3s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 134 SDtfs, 142 SDslu, 636 SDs, 0 SdLazy, 619 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 16 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 248 ConstructedInterpolants, 0 QuantifiedInterpolants, 25750 SizeOfPredicates, 7 NumberOfNonLiveVariables, 455 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 0/392 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 03:11:17,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:11:17,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:11:17,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:11:17,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:11:17,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:11:17,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:11:17,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:11:17,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:11:17,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:11:17,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:11:17,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:11:17,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:11:17,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:11:17,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:11:17,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:11:17,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:11:17,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:11:17,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:11:17,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:11:17,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:11:17,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:11:17,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:11:17,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:11:17,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:11:17,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:11:17,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:11:17,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:11:17,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:11:17,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:11:17,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:11:17,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:11:17,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:11:17,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:11:17,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:11:17,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:11:17,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:11:17,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:11:17,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:11:17,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:11:17,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:11:17,493 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 03:11:17,561 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:11:17,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:11:17,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:11:17,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:11:17,566 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:11:17,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:11:17,567 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:11:17,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:11:17,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:11:17,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:11:17,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:11:17,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:11:17,572 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:11:17,573 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:11:17,573 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:11:17,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:11:17,573 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:11:17,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:11:17,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:11:17,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:11:17,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:11:17,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:11:17,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:11:17,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:11:17,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:11:17,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:11:17,576 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:11:17,576 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:11:17,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:11:17,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:11:17,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:11:17,577 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_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22f8891fc10bb8c305de18eb9540699e7b8a01ce [2020-11-28 03:11:18,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:11:18,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:11:18,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:11:18,144 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:11:18,145 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:11:18,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2020-11-28 03:11:18,248 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/data/94320899c/1d266355f30c4e94aef829843d8afa68/FLAG40107348d [2020-11-28 03:11:18,955 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:11:18,955 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/sv-benchmarks/c/bitvector/num_conversion_1.c [2020-11-28 03:11:18,963 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/data/94320899c/1d266355f30c4e94aef829843d8afa68/FLAG40107348d [2020-11-28 03:11:19,345 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/data/94320899c/1d266355f30c4e94aef829843d8afa68 [2020-11-28 03:11:19,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:11:19,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:11:19,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:19,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:11:19,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:11:19,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:19" (1/1) ... [2020-11-28 03:11:19,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@101cda7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:19, skipping insertion in model container [2020-11-28 03:11:19,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:19" (1/1) ... [2020-11-28 03:11:19,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:11:19,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:11:19,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:19,570 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:11:19,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:19,610 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:11:19,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:19 WrapperNode [2020-11-28 03:11:19,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:19,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:11:19,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:11:19,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:11:19,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:19" (1/1) ... [2020-11-28 03:11:19,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:19" (1/1) ... [2020-11-28 03:11:19,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:11:19,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:11:19,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:11:19,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:11:19,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:19" (1/1) ... [2020-11-28 03:11:19,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:19" (1/1) ... [2020-11-28 03:11:19,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:19" (1/1) ... [2020-11-28 03:11:19,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:19" (1/1) ... [2020-11-28 03:11:19,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:19" (1/1) ... [2020-11-28 03:11:19,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:19" (1/1) ... [2020-11-28 03:11:19,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:19" (1/1) ... [2020-11-28 03:11:19,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:11:19,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:11:19,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:11:19,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:11:19,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/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 03:11:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:11:19,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:11:19,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:11:19,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:11:20,339 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:11:20,343 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 03:11:20,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:20 BoogieIcfgContainer [2020-11-28 03:11:20,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:11:20,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:11:20,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:11:20,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:11:20,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:11:19" (1/3) ... [2020-11-28 03:11:20,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175b9d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:20, skipping insertion in model container [2020-11-28 03:11:20,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:19" (2/3) ... [2020-11-28 03:11:20,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175b9d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:20, skipping insertion in model container [2020-11-28 03:11:20,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:20" (3/3) ... [2020-11-28 03:11:20,357 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2020-11-28 03:11:20,372 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:11:20,377 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:11:20,392 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:11:20,438 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:11:20,438 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:11:20,439 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:11:20,439 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:11:20,439 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:11:20,439 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:11:20,439 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:11:20,440 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:11:20,457 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-28 03:11:20,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:11:20,483 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:20,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:11:20,484 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:20,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:20,491 INFO L82 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2020-11-28 03:11:20,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:11:20,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131422824] [2020-11-28 03:11:20,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/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 03:11:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:20,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 03:11:20,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:20,663 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 03:11:20,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:11:20,666 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 03:11:20,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131422824] [2020-11-28 03:11:20,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:20,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:11:20,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830544227] [2020-11-28 03:11:20,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:11:20,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:11:20,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:11:20,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:11:20,688 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-28 03:11:20,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:20,703 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-11-28 03:11:20,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:11:20,704 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-28 03:11:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:20,713 INFO L225 Difference]: With dead ends: 22 [2020-11-28 03:11:20,713 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 03:11:20,716 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 03:11:20,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 03:11:20,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 03:11:20,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 03:11:20,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-11-28 03:11:20,747 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2020-11-28 03:11:20,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:20,747 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-11-28 03:11:20,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:11:20,747 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-11-28 03:11:20,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:11:20,748 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:20,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:11:20,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:11:20,965 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:20,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:20,967 INFO L82 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2020-11-28 03:11:20,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:11:20,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449372748] [2020-11-28 03:11:20,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/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 03:11:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:21,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:11:21,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:21,059 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 03:11:21,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:11:21,075 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 03:11:21,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449372748] [2020-11-28 03:11:21,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:21,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 03:11:21,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873396834] [2020-11-28 03:11:21,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:11:21,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:11:21,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:11:21,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:11:21,079 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2020-11-28 03:11:21,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:21,134 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2020-11-28 03:11:21,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:11:21,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-28 03:11:21,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:21,149 INFO L225 Difference]: With dead ends: 17 [2020-11-28 03:11:21,149 INFO L226 Difference]: Without dead ends: 13 [2020-11-28 03:11:21,150 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 03:11:21,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-28 03:11:21,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-28 03:11:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 03:11:21,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-11-28 03:11:21,164 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 6 [2020-11-28 03:11:21,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:21,165 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-11-28 03:11:21,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:11:21,166 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-11-28 03:11:21,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:11:21,167 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:21,167 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:21,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:11:21,384 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:21,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:21,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1950053902, now seen corresponding path program 1 times [2020-11-28 03:11:21,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:11:21,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124715679] [2020-11-28 03:11:21,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/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 03:11:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:21,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:11:21,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:21,534 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 03:11:21,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:11:21,618 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 03:11:21,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124715679] [2020-11-28 03:11:21,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:21,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 03:11:21,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304245037] [2020-11-28 03:11:21,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:11:21,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:11:21,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:11:21,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:11:21,622 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 6 states. [2020-11-28 03:11:21,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:21,868 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-11-28 03:11:21,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:11:21,869 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-28 03:11:21,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:21,870 INFO L225 Difference]: With dead ends: 28 [2020-11-28 03:11:21,870 INFO L226 Difference]: Without dead ends: 19 [2020-11-28 03:11:21,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:11:21,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-28 03:11:21,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2020-11-28 03:11:21,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 03:11:21,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-11-28 03:11:21,878 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 12 [2020-11-28 03:11:21,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:21,878 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-11-28 03:11:21,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:11:21,878 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-11-28 03:11:21,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:11:21,879 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:21,879 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:22,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 03:11:22,080 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:22,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:22,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1664855024, now seen corresponding path program 1 times [2020-11-28 03:11:22,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:11:22,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550841671] [2020-11-28 03:11:22,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/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 03:11:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:22,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:11:22,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:22,181 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 03:11:22,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:11:22,260 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 03:11:22,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550841671] [2020-11-28 03:11:22,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:11:22,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-11-28 03:11:22,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171997675] [2020-11-28 03:11:22,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:11:22,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:11:22,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:11:22,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:11:22,264 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2020-11-28 03:11:22,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:22,488 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2020-11-28 03:11:22,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:11:22,489 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-11-28 03:11:22,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:22,490 INFO L225 Difference]: With dead ends: 29 [2020-11-28 03:11:22,490 INFO L226 Difference]: Without dead ends: 25 [2020-11-28 03:11:22,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:11:22,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-28 03:11:22,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-28 03:11:22,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 03:11:22,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-11-28 03:11:22,499 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 12 [2020-11-28 03:11:22,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:22,500 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-11-28 03:11:22,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:11:22,501 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-11-28 03:11:22,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 03:11:22,502 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:22,502 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:22,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 03:11:22,712 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:22,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:22,713 INFO L82 PathProgramCache]: Analyzing trace with hash 2085526576, now seen corresponding path program 2 times [2020-11-28 03:11:22,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:11:22,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742025993] [2020-11-28 03:11:22,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-28 03:11:22,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:11:22,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:11:22,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:11:22,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:22,871 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 03:11:22,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:11:23,029 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 03:11:23,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742025993] [2020-11-28 03:11:23,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:11:23,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-11-28 03:11:23,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689006309] [2020-11-28 03:11:23,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:11:23,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:11:23,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:11:23,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:11:23,033 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 10 states. [2020-11-28 03:11:23,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:23,491 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2020-11-28 03:11:23,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-28 03:11:23,497 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-11-28 03:11:23,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:23,498 INFO L225 Difference]: With dead ends: 54 [2020-11-28 03:11:23,498 INFO L226 Difference]: Without dead ends: 39 [2020-11-28 03:11:23,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-11-28 03:11:23,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-28 03:11:23,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2020-11-28 03:11:23,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-28 03:11:23,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-11-28 03:11:23,520 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 24 [2020-11-28 03:11:23,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:23,526 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-11-28 03:11:23,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:11:23,527 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-11-28 03:11:23,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 03:11:23,528 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:23,528 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:23,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 03:11:23,747 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:23,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:23,747 INFO L82 PathProgramCache]: Analyzing trace with hash -986835344, now seen corresponding path program 3 times [2020-11-28 03:11:23,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:11:23,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476517708] [2020-11-28 03:11:23,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-28 03:11:23,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-28 03:11:23,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:11:23,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:11:23,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:23,936 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 03:11:23,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:11:24,232 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 03:11:24,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476517708] [2020-11-28 03:11:24,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:11:24,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-11-28 03:11:24,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395260] [2020-11-28 03:11:24,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:11:24,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:11:24,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:11:24,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:11:24,237 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 10 states. [2020-11-28 03:11:24,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:24,581 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2020-11-28 03:11:24,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:11:24,582 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-11-28 03:11:24,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:24,583 INFO L225 Difference]: With dead ends: 53 [2020-11-28 03:11:24,584 INFO L226 Difference]: Without dead ends: 31 [2020-11-28 03:11:24,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-11-28 03:11:24,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-28 03:11:24,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-28 03:11:24,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:11:24,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-11-28 03:11:24,595 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 24 [2020-11-28 03:11:24,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:24,596 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-11-28 03:11:24,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:11:24,596 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-11-28 03:11:24,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 03:11:24,598 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:24,598 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:24,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 03:11:24,817 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:24,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:24,817 INFO L82 PathProgramCache]: Analyzing trace with hash -29656432, now seen corresponding path program 4 times [2020-11-28 03:11:24,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:11:24,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555247431] [2020-11-28 03:11:24,818 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/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 03:11:24,895 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:11:24,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:11:24,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-28 03:11:24,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:25,251 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 03:11:25,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:11:26,186 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 03:11:26,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555247431] [2020-11-28 03:11:26,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:11:26,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2020-11-28 03:11:26,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486069530] [2020-11-28 03:11:26,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-28 03:11:26,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:11:26,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-28 03:11:26,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2020-11-28 03:11:26,190 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 28 states. [2020-11-28 03:11:27,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:27,387 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-11-28 03:11:27,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-28 03:11:27,388 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 30 [2020-11-28 03:11:27,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:27,389 INFO L225 Difference]: With dead ends: 53 [2020-11-28 03:11:27,389 INFO L226 Difference]: Without dead ends: 37 [2020-11-28 03:11:27,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2020-11-28 03:11:27,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-28 03:11:27,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-28 03:11:27,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-28 03:11:27,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-11-28 03:11:27,402 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 30 [2020-11-28 03:11:27,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:27,402 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-11-28 03:11:27,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-28 03:11:27,403 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-11-28 03:11:27,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-28 03:11:27,404 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:27,404 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 6, 4, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:27,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-28 03:11:27,617 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:27,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:27,618 INFO L82 PathProgramCache]: Analyzing trace with hash -166593550, now seen corresponding path program 5 times [2020-11-28 03:11:27,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:11:27,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642335471] [2020-11-28 03:11:27,619 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-28 03:11:27,662 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-28 03:11:27,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:11:27,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-28 03:11:27,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:28,678 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:11:28,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:11:29,521 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:11:29,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642335471] [2020-11-28 03:11:29,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:29,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18, 18] imperfect sequences [] total 34 [2020-11-28 03:11:29,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060289949] [2020-11-28 03:11:29,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-11-28 03:11:29,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:11:29,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-11-28 03:11:29,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=746, Unknown=0, NotChecked=0, Total=1122 [2020-11-28 03:11:29,526 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 34 states. [2020-11-28 03:11:29,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:29,750 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-11-28 03:11:29,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-28 03:11:29,751 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 36 [2020-11-28 03:11:29,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:29,752 INFO L225 Difference]: With dead ends: 39 [2020-11-28 03:11:29,752 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:11:29,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=376, Invalid=746, Unknown=0, NotChecked=0, Total=1122 [2020-11-28 03:11:29,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:11:29,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:11:29,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:11:29,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:11:29,754 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-11-28 03:11:29,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:29,755 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:11:29,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-11-28 03:11:29,755 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:11:29,755 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:11:29,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-28 03:11:29,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:11:30,125 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 188 [2020-11-28 03:11:30,964 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 140 [2020-11-28 03:11:30,971 INFO L277 CegarLoopResult]: At program point L33(lines 14 34) the Hoare annotation is: true [2020-11-28 03:11:30,971 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:11:30,972 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 30) the Hoare annotation is: (let ((.cse14 ((_ zero_extend 24) ULTIMATE.start_main_~c~0))) (let ((.cse17 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse14 (_ bv1 32)))))) (let ((.cse16 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse17 (_ bv1 32)))))) (let ((.cse11 ((_ zero_extend 24) ULTIMATE.start_main_~x~0)) (.cse15 ((_ zero_extend 24) ULTIMATE.start_main_~y~0)) (.cse12 ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse16))))) (let ((.cse2 (exists ((v_ULTIMATE.start_main_~c~0_28 (_ BitVec 8))) (let ((.cse25 ((_ zero_extend 24) v_ULTIMATE.start_main_~c~0_28))) (and (= ((_ extract 7 0) (bvadd .cse25 (_ 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) .cse25)))))) (_ bv0 32))))))) (.cse0 (= (_ bv5 8) ULTIMATE.start_main_~y~0)) (.cse13 (or (bvslt .cse17 (_ bv8 32)) (= (_ bv0 32) ((_ zero_extend 24) ULTIMATE.start_main_~bit~0)))) (.cse3 (= .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse15 .cse12))))) (.cse10 (= (_ bv1 8) ULTIMATE.start_main_~y~0)) (.cse1 (= (_ bv37 8) ULTIMATE.start_main_~x~0))) (or (and .cse0 (= (_ bv4 8) ULTIMATE.start_main_~c~0) .cse1) (and .cse1 .cse2 .cse3 (exists ((v_ULTIMATE.start_main_~c~0_50 (_ BitVec 8))) (let ((.cse9 ((_ zero_extend 24) v_ULTIMATE.start_main_~c~0_50))) (let ((.cse6 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse9 (_ bv1 32)))))) (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse6 (_ bv1 32)))))) (let ((.cse4 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse5 (_ bv1 32)))))) (let ((.cse7 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse4 (_ bv1 32)))))) (let ((.cse8 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse7 (_ bv1 32)))))) (and (bvslt .cse4 (_ bv8 32)) (bvslt .cse5 (_ bv8 32)) (bvslt .cse6 (_ bv8 32)) (bvslt .cse7 (_ bv8 32)) (bvslt .cse8 (_ bv8 32)) (bvslt .cse9 (_ bv8 32)) (= ((_ extract 7 0) (bvadd .cse8 (_ bv1 32))) ULTIMATE.start_main_~c~0)))))))))) (and (= (_ bv2 8) ULTIMATE.start_main_~c~0) .cse1 .cse10) (and .cse0 (= (_ bv0 8) (bvadd ULTIMATE.start_main_~bit~0 (_ bv252 8))) .cse1 (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse11 .cse12))) (_ bv0 32))) .cse2) (and .cse13 (= ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse14))) .cse15))) .cse11) (= .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse16 (_ bv1 32)))) (_ bv1 32))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse15 ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse17)))))))))) .cse1) (and .cse0 .cse1 (= (_ bv5 8) ULTIMATE.start_main_~c~0)) (and .cse13 (exists ((v_ULTIMATE.start_main_~c~0_50 (_ BitVec 8))) (let ((.cse24 ((_ zero_extend 24) v_ULTIMATE.start_main_~c~0_50))) (let ((.cse20 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse24 (_ bv1 32)))))) (let ((.cse19 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse20 (_ bv1 32)))))) (let ((.cse18 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse19 (_ bv1 32)))))) (let ((.cse21 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse18 (_ bv1 32)))))) (let ((.cse22 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse21 (_ bv1 32)))))) (let ((.cse23 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse22 (_ bv1 32)))))) (and (bvslt .cse18 (_ bv8 32)) (bvslt .cse19 (_ bv8 32)) (bvslt .cse20 (_ bv8 32)) (bvslt .cse21 (_ bv8 32)) (bvslt .cse22 (_ bv8 32)) (bvslt .cse23 (_ bv8 32)) (bvslt .cse24 (_ bv8 32)) (= ULTIMATE.start_main_~c~0 ((_ extract 7 0) (bvadd .cse23 (_ bv1 32))))))))))))) .cse1 .cse3) (and (= (_ bv0 8) (bvadd ULTIMATE.start_main_~bit~0 (_ bv255 8))) (= (_ bv1 8) ULTIMATE.start_main_~c~0) .cse1 .cse10) (and (= (_ bv0 8) ULTIMATE.start_main_~c~0) .cse1 (= (_ bv0 8) ULTIMATE.start_main_~y~0)))))))) [2020-11-28 03:11:30,972 INFO L274 CegarLoopResult]: For program point L23-3(lines 23 30) no Hoare annotation was computed. [2020-11-28 03:11:30,972 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-11-28 03:11:30,973 INFO L277 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2020-11-28 03:11:30,973 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 03:11:30,973 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:11:30,973 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:11:30,973 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:11:30,973 INFO L274 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-11-28 03:11:30,974 INFO L274 CegarLoopResult]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2020-11-28 03:11:30,974 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:11:30,974 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-11-28 03:11:30,987 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-11-28 03:11:30,989 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-11-28 03:11:30,989 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:30,990 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:30,993 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:30,994 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:30,995 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:30,996 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:30,997 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:30,997 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-11-28 03:11:31,003 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-11-28 03:11:31,003 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,004 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,004 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,005 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,005 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,005 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,006 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,006 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,033 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-11-28 03:11:31,034 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-11-28 03:11:31,043 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,043 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,044 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,044 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,044 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,045 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,045 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,046 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-11-28 03:11:31,046 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-11-28 03:11:31,046 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,047 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,047 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,047 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,048 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,048 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,049 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,049 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:11:31 BoogieIcfgContainer [2020-11-28 03:11:31,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:11:31,055 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:11:31,056 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:11:31,056 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:11:31,057 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:20" (3/4) ... [2020-11-28 03:11:31,060 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:11:31,072 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-28 03:11:31,073 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:11:31,073 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:11:31,073 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:11:31,104 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((5bv8 == y && 4bv8 == c) && 37bv8 == x) || (((37bv8 == x && (\exists v_ULTIMATE.start_main_~c~0_28 : bv8 :: ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28), 1bv32)[7:0] == c && !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28))[7:0]))[7:0]) == 0bv32))) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0])) && (\exists v_ULTIMATE.start_main_~c~0_50 : bv8 :: (((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 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_50), 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_50), 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_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0] == c))) || ((2bv8 == c && 37bv8 == x) && 1bv8 == y)) || ((((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_28 : bv8 :: ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28), 1bv32)[7:0] == c && !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28))[7:0]))[7:0]) == 0bv32)))) || ((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 8bv32) || 0bv32 == ~zero_extendFrom8To32(bit)) && ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(c))[7:0]), ~zero_extendFrom8To32(y))[7:0]) == ~zero_extendFrom8To32(x)) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]), ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]))[7:0]))[7:0]))[7:0])) && 37bv8 == x)) || ((5bv8 == y && 37bv8 == x) && 5bv8 == c)) || ((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 8bv32) || 0bv32 == ~zero_extendFrom8To32(bit)) && (\exists v_ULTIMATE.start_main_~c~0_50 : bv8 :: ((((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 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_50), 1bv32)[7:0]), 1bv32)[7:0]), 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(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 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_50), 8bv32)) && c == ~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_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0])) && 37bv8 == x) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]))) || (((0bv8 == ~bvadd64(bit, 255bv8) && 1bv8 == c) && 37bv8 == x) && 1bv8 == y)) || ((0bv8 == c && 37bv8 == x) && 0bv8 == y) [2020-11-28 03:11:31,116 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0cfebf9c-0988-4601-8236-6e9bb263ec76/bin/uautomizer/witness.graphml [2020-11-28 03:11:31,116 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:11:31,118 INFO L168 Benchmark]: Toolchain (without parser) took 11766.27 ms. Allocated memory was 60.8 MB in the beginning and 113.2 MB in the end (delta: 52.4 MB). Free memory was 38.9 MB in the beginning and 89.8 MB in the end (delta: -50.9 MB). Peak memory consumption was 789.5 kB. Max. memory is 16.1 GB. [2020-11-28 03:11:31,119 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 41.5 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:31,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.27 ms. Allocated memory is still 60.8 MB. Free memory was 38.7 MB in the beginning and 29.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:31,120 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.01 ms. Allocated memory is still 60.8 MB. Free memory was 29.1 MB in the beginning and 43.3 MB in the end (delta: -14.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:31,121 INFO L168 Benchmark]: Boogie Preprocessor took 80.81 ms. Allocated memory is still 60.8 MB. Free memory was 43.3 MB in the beginning and 43.3 MB in the end (delta: 3.7 kB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:31,121 INFO L168 Benchmark]: RCFGBuilder took 598.31 ms. Allocated memory is still 60.8 MB. Free memory was 43.3 MB in the beginning and 32.1 MB in the end (delta: 11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:31,122 INFO L168 Benchmark]: TraceAbstraction took 10707.56 ms. Allocated memory was 60.8 MB in the beginning and 113.2 MB in the end (delta: 52.4 MB). Free memory was 31.6 MB in the beginning and 91.9 MB in the end (delta: -60.4 MB). Peak memory consumption was 56.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:31,123 INFO L168 Benchmark]: Witness Printer took 61.00 ms. Allocated memory is still 113.2 MB. Free memory was 91.9 MB in the beginning and 89.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:31,126 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 41.5 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 257.27 ms. Allocated memory is still 60.8 MB. Free memory was 38.7 MB in the beginning and 29.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.01 ms. Allocated memory is still 60.8 MB. Free memory was 29.1 MB in the beginning and 43.3 MB in the end (delta: -14.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.81 ms. Allocated memory is still 60.8 MB. Free memory was 43.3 MB in the beginning and 43.3 MB in the end (delta: 3.7 kB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 598.31 ms. Allocated memory is still 60.8 MB. Free memory was 43.3 MB in the beginning and 32.1 MB in the end (delta: 11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10707.56 ms. Allocated memory was 60.8 MB in the beginning and 113.2 MB in the end (delta: 52.4 MB). Free memory was 31.6 MB in the beginning and 91.9 MB in the end (delta: -60.4 MB). Peak memory consumption was 56.2 MB. Max. memory is 16.1 GB. * Witness Printer took 61.00 ms. Allocated memory is still 113.2 MB. Free memory was 91.9 MB in the beginning and 89.8 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_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,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 03:11:31,140 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-11-28 03:11:31,140 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-11-28 03:11:31,141 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,141 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,141 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,142 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,142 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,142 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,143 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,143 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-11-28 03:11:31,143 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-11-28 03:11:31,144 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,144 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,145 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,145 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,145 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,146 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,146 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,146 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,150 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-11-28 03:11:31,150 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-11-28 03:11:31,151 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,151 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,151 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,152 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,152 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,152 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,153 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,153 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-11-28 03:11:31,154 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2020-11-28 03:11:31,154 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,154 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,155 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,155 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,155 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,156 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,156 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2020-11-28 03:11:31,156 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] Derived loop invariant: (((((((((5bv8 == y && 4bv8 == c) && 37bv8 == x) || (((37bv8 == x && (\exists v_ULTIMATE.start_main_~c~0_28 : bv8 :: ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28), 1bv32)[7:0] == c && !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28))[7:0]))[7:0]) == 0bv32))) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0])) && (\exists v_ULTIMATE.start_main_~c~0_50 : bv8 :: (((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 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_50), 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_50), 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_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0] == c))) || ((2bv8 == c && 37bv8 == x) && 1bv8 == y)) || ((((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_28 : bv8 :: ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28), 1bv32)[7:0] == c && !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28))[7:0]))[7:0]) == 0bv32)))) || ((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 8bv32) || 0bv32 == ~zero_extendFrom8To32(bit)) && ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(c))[7:0]), ~zero_extendFrom8To32(y))[7:0]) == ~zero_extendFrom8To32(x)) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]), ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]))[7:0]))[7:0]))[7:0])) && 37bv8 == x)) || ((5bv8 == y && 37bv8 == x) && 5bv8 == c)) || ((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 8bv32) || 0bv32 == ~zero_extendFrom8To32(bit)) && (\exists v_ULTIMATE.start_main_~c~0_50 : bv8 :: ((((((~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 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_50), 1bv32)[7:0]), 1bv32)[7:0]), 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(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 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_50), 8bv32)) && c == ~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_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0])) && 37bv8 == x) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]))) || (((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: 9.5s, OverallIterations: 8, TraceHistogramMax: 10, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 143 SDslu, 316 SDs, 0 SdLazy, 697 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 310 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 16 NumberOfFragments, 533 HoareAnnotationTreeSize, 3 FomulaSimplifications, 127 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 671 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 150 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 284 ConstructedInterpolants, 39 QuantifiedInterpolants, 129955 SizeOfPredicates, 25 NumberOfNonLiveVariables, 361 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 472/698 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...