./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i -s /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/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 2a51e7d7d3160b4418bb04f01bccc7314d2964c0 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 16:03:49,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 16:03:49,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 16:03:49,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 16:03:49,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 16:03:49,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 16:03:49,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 16:03:49,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 16:03:49,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 16:03:49,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 16:03:49,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 16:03:49,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 16:03:49,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 16:03:49,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 16:03:49,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 16:03:49,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 16:03:49,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 16:03:49,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 16:03:49,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 16:03:49,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 16:03:49,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 16:03:49,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 16:03:49,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 16:03:49,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 16:03:49,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 16:03:49,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 16:03:49,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 16:03:49,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 16:03:49,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 16:03:49,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 16:03:49,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 16:03:49,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 16:03:49,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 16:03:49,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 16:03:49,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 16:03:49,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 16:03:49,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 16:03:49,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 16:03:49,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 16:03:49,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 16:03:49,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 16:03:49,720 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 16:03:49,761 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 16:03:49,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 16:03:49,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 16:03:49,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 16:03:49,768 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 16:03:49,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 16:03:49,769 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 16:03:49,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 16:03:49,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 16:03:49,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 16:03:49,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 16:03:49,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 16:03:49,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 16:03:49,771 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 16:03:49,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 16:03:49,772 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 16:03:49,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 16:03:49,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 16:03:49,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 16:03:49,773 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 16:03:49,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 16:03:49,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 16:03:49,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 16:03:49,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 16:03:49,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 16:03:49,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 16:03:49,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 16:03:49,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 16:03:49,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 16:03:49,775 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_73d91407-74fb-4ecb-b134-721bcf47aa47/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a51e7d7d3160b4418bb04f01bccc7314d2964c0 [2020-12-01 16:03:50,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 16:03:50,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 16:03:50,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 16:03:50,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 16:03:50,125 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 16:03:50,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2020-12-01 16:03:50,208 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/bin/uautomizer/data/3cebbb5fa/59f1596fb608475b8b9f116d16bfc203/FLAG23d34dded [2020-12-01 16:03:50,686 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 16:03:50,687 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2020-12-01 16:03:50,693 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/bin/uautomizer/data/3cebbb5fa/59f1596fb608475b8b9f116d16bfc203/FLAG23d34dded [2020-12-01 16:03:51,086 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/bin/uautomizer/data/3cebbb5fa/59f1596fb608475b8b9f116d16bfc203 [2020-12-01 16:03:51,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 16:03:51,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 16:03:51,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 16:03:51,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 16:03:51,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 16:03:51,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:03:51" (1/1) ... [2020-12-01 16:03:51,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@516905fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:51, skipping insertion in model container [2020-12-01 16:03:51,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:03:51" (1/1) ... [2020-12-01 16:03:51,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 16:03:51,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 16:03:51,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:03:51,353 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 16:03:51,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:03:51,385 INFO L208 MainTranslator]: Completed translation [2020-12-01 16:03:51,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:51 WrapperNode [2020-12-01 16:03:51,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 16:03:51,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 16:03:51,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 16:03:51,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 16:03:51,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:51" (1/1) ... [2020-12-01 16:03:51,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:51" (1/1) ... [2020-12-01 16:03:51,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 16:03:51,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 16:03:51,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 16:03:51,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 16:03:51,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:51" (1/1) ... [2020-12-01 16:03:51,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:51" (1/1) ... [2020-12-01 16:03:51,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:51" (1/1) ... [2020-12-01 16:03:51,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:51" (1/1) ... [2020-12-01 16:03:51,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:51" (1/1) ... [2020-12-01 16:03:51,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:51" (1/1) ... [2020-12-01 16:03:51,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:51" (1/1) ... [2020-12-01 16:03:51,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 16:03:51,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 16:03:51,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 16:03:51,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 16:03:51,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/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 [2020-12-01 16:03:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 16:03:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 16:03:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 16:03:51,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 16:03:51,937 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 16:03:51,938 INFO L298 CfgBuilder]: Removed 37 assume(true) statements. [2020-12-01 16:03:51,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:03:51 BoogieIcfgContainer [2020-12-01 16:03:51,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 16:03:51,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 16:03:51,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 16:03:51,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 16:03:51,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 04:03:51" (1/3) ... [2020-12-01 16:03:51,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@293ebba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:03:51, skipping insertion in model container [2020-12-01 16:03:51,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:51" (2/3) ... [2020-12-01 16:03:51,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@293ebba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:03:51, skipping insertion in model container [2020-12-01 16:03:51,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:03:51" (3/3) ... [2020-12-01 16:03:51,950 INFO L111 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2020-12-01 16:03:51,965 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 16:03:51,968 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-01 16:03:51,993 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-01 16:03:52,040 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 16:03:52,041 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 16:03:52,041 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 16:03:52,041 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 16:03:52,041 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 16:03:52,042 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 16:03:52,043 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 16:03:52,043 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 16:03:52,071 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-12-01 16:03:52,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 16:03:52,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:52,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:52,080 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:52,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:52,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1147777426, now seen corresponding path program 1 times [2020-12-01 16:03:52,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:52,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922380076] [2020-12-01 16:03:52,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:52,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:52,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922380076] [2020-12-01 16:03:52,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:52,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 16:03:52,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412971233] [2020-12-01 16:03:52,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 16:03:52,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:52,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 16:03:52,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 16:03:52,311 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 2 states. [2020-12-01 16:03:52,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:52,347 INFO L93 Difference]: Finished difference Result 126 states and 165 transitions. [2020-12-01 16:03:52,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 16:03:52,348 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-01 16:03:52,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:52,360 INFO L225 Difference]: With dead ends: 126 [2020-12-01 16:03:52,360 INFO L226 Difference]: Without dead ends: 57 [2020-12-01 16:03:52,372 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 [2020-12-01 16:03:52,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-01 16:03:52,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-12-01 16:03:52,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-01 16:03:52,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-12-01 16:03:52,418 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 12 [2020-12-01 16:03:52,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:52,418 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-12-01 16:03:52,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 16:03:52,419 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-12-01 16:03:52,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 16:03:52,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:52,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:52,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 16:03:52,421 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:52,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:52,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1315712712, now seen corresponding path program 1 times [2020-12-01 16:03:52,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:52,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642850761] [2020-12-01 16:03:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:52,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:52,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642850761] [2020-12-01 16:03:52,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:52,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:03:52,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098499326] [2020-12-01 16:03:52,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:03:52,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:52,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:03:52,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:03:52,547 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 4 states. [2020-12-01 16:03:52,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:52,629 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2020-12-01 16:03:52,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:03:52,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-01 16:03:52,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:52,631 INFO L225 Difference]: With dead ends: 61 [2020-12-01 16:03:52,634 INFO L226 Difference]: Without dead ends: 49 [2020-12-01 16:03:52,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:03:52,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-01 16:03:52,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-12-01 16:03:52,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-01 16:03:52,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-12-01 16:03:52,650 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 13 [2020-12-01 16:03:52,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:52,650 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-12-01 16:03:52,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:03:52,651 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-12-01 16:03:52,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 16:03:52,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:52,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:52,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 16:03:52,654 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:52,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:52,656 INFO L82 PathProgramCache]: Analyzing trace with hash 2065014123, now seen corresponding path program 1 times [2020-12-01 16:03:52,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:52,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313039319] [2020-12-01 16:03:52,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:52,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:52,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313039319] [2020-12-01 16:03:52,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:52,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 16:03:52,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569291963] [2020-12-01 16:03:52,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 16:03:52,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:52,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 16:03:52,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:03:52,830 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 5 states. [2020-12-01 16:03:52,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:52,987 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-12-01 16:03:52,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 16:03:52,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-01 16:03:52,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:52,989 INFO L225 Difference]: With dead ends: 65 [2020-12-01 16:03:52,989 INFO L226 Difference]: Without dead ends: 57 [2020-12-01 16:03:52,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 16:03:52,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-01 16:03:52,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-12-01 16:03:52,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-01 16:03:52,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-12-01 16:03:52,999 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 15 [2020-12-01 16:03:52,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:52,999 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-12-01 16:03:52,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 16:03:52,999 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-12-01 16:03:53,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 16:03:53,000 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:53,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:53,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 16:03:53,001 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:53,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:53,001 INFO L82 PathProgramCache]: Analyzing trace with hash 193701111, now seen corresponding path program 1 times [2020-12-01 16:03:53,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:53,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030549120] [2020-12-01 16:03:53,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:53,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:53,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030549120] [2020-12-01 16:03:53,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:53,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:03:53,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241047784] [2020-12-01 16:03:53,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:03:53,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:53,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:03:53,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:03:53,085 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 4 states. [2020-12-01 16:03:53,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:53,155 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-12-01 16:03:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 16:03:53,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-01 16:03:53,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:53,158 INFO L225 Difference]: With dead ends: 70 [2020-12-01 16:03:53,158 INFO L226 Difference]: Without dead ends: 66 [2020-12-01 16:03:53,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:03:53,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-01 16:03:53,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2020-12-01 16:03:53,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-01 16:03:53,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-12-01 16:03:53,176 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 18 [2020-12-01 16:03:53,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:53,178 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-12-01 16:03:53,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:03:53,178 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-12-01 16:03:53,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 16:03:53,179 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:53,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:53,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 16:03:53,180 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:53,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:53,181 INFO L82 PathProgramCache]: Analyzing trace with hash -362658927, now seen corresponding path program 1 times [2020-12-01 16:03:53,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:53,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899024432] [2020-12-01 16:03:53,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:53,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899024432] [2020-12-01 16:03:53,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:53,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 16:03:53,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726400311] [2020-12-01 16:03:53,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 16:03:53,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:53,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 16:03:53,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 16:03:53,297 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 6 states. [2020-12-01 16:03:53,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:53,484 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2020-12-01 16:03:53,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 16:03:53,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-01 16:03:53,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:53,486 INFO L225 Difference]: With dead ends: 92 [2020-12-01 16:03:53,486 INFO L226 Difference]: Without dead ends: 72 [2020-12-01 16:03:53,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-01 16:03:53,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-01 16:03:53,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2020-12-01 16:03:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-01 16:03:53,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-12-01 16:03:53,497 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 19 [2020-12-01 16:03:53,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:53,498 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-12-01 16:03:53,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 16:03:53,498 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-12-01 16:03:53,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 16:03:53,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:53,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:53,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 16:03:53,500 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:53,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:53,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1848655546, now seen corresponding path program 1 times [2020-12-01 16:03:53,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:53,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490903104] [2020-12-01 16:03:53,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:53,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490903104] [2020-12-01 16:03:53,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:53,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-01 16:03:53,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982734222] [2020-12-01 16:03:53,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 16:03:53,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:53,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 16:03:53,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-01 16:03:53,619 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 7 states. [2020-12-01 16:03:53,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:53,787 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2020-12-01 16:03:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 16:03:53,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-01 16:03:53,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:53,793 INFO L225 Difference]: With dead ends: 80 [2020-12-01 16:03:53,793 INFO L226 Difference]: Without dead ends: 76 [2020-12-01 16:03:53,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2020-12-01 16:03:53,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-01 16:03:53,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2020-12-01 16:03:53,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-01 16:03:53,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-12-01 16:03:53,803 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 20 [2020-12-01 16:03:53,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:53,804 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-12-01 16:03:53,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 16:03:53,804 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-12-01 16:03:53,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-01 16:03:53,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:53,805 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:53,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 16:03:53,806 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:53,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:53,807 INFO L82 PathProgramCache]: Analyzing trace with hash 2037054178, now seen corresponding path program 1 times [2020-12-01 16:03:53,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:53,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442447881] [2020-12-01 16:03:53,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:53,871 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:53,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442447881] [2020-12-01 16:03:53,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154803773] [2020-12-01 16:03:53,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/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 [2020-12-01 16:03:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:53,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-01 16:03:53,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:03:54,018 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:03:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:54,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 16:03:54,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-12-01 16:03:54,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65597754] [2020-12-01 16:03:54,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 16:03:54,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:54,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 16:03:54,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-01 16:03:54,038 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 7 states. [2020-12-01 16:03:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:54,158 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2020-12-01 16:03:54,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 16:03:54,158 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-01 16:03:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:54,159 INFO L225 Difference]: With dead ends: 66 [2020-12-01 16:03:54,160 INFO L226 Difference]: Without dead ends: 62 [2020-12-01 16:03:54,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-01 16:03:54,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-01 16:03:54,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-12-01 16:03:54,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-01 16:03:54,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-12-01 16:03:54,168 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 29 [2020-12-01 16:03:54,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:54,169 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-12-01 16:03:54,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 16:03:54,169 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-12-01 16:03:54,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-01 16:03:54,170 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:54,170 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:54,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-01 16:03:54,396 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:54,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:54,396 INFO L82 PathProgramCache]: Analyzing trace with hash 946711302, now seen corresponding path program 1 times [2020-12-01 16:03:54,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:54,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470228279] [2020-12-01 16:03:54,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:54,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:54,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470228279] [2020-12-01 16:03:54,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265447882] [2020-12-01 16:03:54,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/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 [2020-12-01 16:03:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:54,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-01 16:03:54,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:03:54,887 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:03:54,893 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:03:54,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:54,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 16:03:54,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2020-12-01 16:03:54,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331925670] [2020-12-01 16:03:54,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-01 16:03:54,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:54,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-01 16:03:54,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-12-01 16:03:54,919 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 13 states. [2020-12-01 16:03:55,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:55,210 INFO L93 Difference]: Finished difference Result 100 states and 104 transitions. [2020-12-01 16:03:55,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-01 16:03:55,211 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-12-01 16:03:55,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:55,241 INFO L225 Difference]: With dead ends: 100 [2020-12-01 16:03:55,242 INFO L226 Difference]: Without dead ends: 80 [2020-12-01 16:03:55,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2020-12-01 16:03:55,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-01 16:03:55,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2020-12-01 16:03:55,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-01 16:03:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-12-01 16:03:55,261 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 30 [2020-12-01 16:03:55,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:55,262 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-12-01 16:03:55,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-01 16:03:55,262 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-12-01 16:03:55,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-01 16:03:55,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:55,266 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:55,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:03:55,480 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:55,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:55,480 INFO L82 PathProgramCache]: Analyzing trace with hash -510540315, now seen corresponding path program 1 times [2020-12-01 16:03:55,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:55,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517874709] [2020-12-01 16:03:55,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:55,610 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:55,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517874709] [2020-12-01 16:03:55,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550454491] [2020-12-01 16:03:55,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/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 [2020-12-01 16:03:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:55,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-01 16:03:55,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:03:55,803 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:03:55,816 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:03:55,832 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:55,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 16:03:55,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-12-01 16:03:55,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159352161] [2020-12-01 16:03:55,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 16:03:55,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:55,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 16:03:55,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-01 16:03:55,834 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 12 states. [2020-12-01 16:03:56,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:56,063 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2020-12-01 16:03:56,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-01 16:03:56,064 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-12-01 16:03:56,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:56,065 INFO L225 Difference]: With dead ends: 87 [2020-12-01 16:03:56,065 INFO L226 Difference]: Without dead ends: 83 [2020-12-01 16:03:56,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2020-12-01 16:03:56,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-01 16:03:56,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 73. [2020-12-01 16:03:56,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-01 16:03:56,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-12-01 16:03:56,096 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 31 [2020-12-01 16:03:56,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:56,096 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-12-01 16:03:56,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 16:03:56,097 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-12-01 16:03:56,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-01 16:03:56,098 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:56,098 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:56,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:03:56,299 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:56,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:56,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1128036465, now seen corresponding path program 2 times [2020-12-01 16:03:56,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:56,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125647516] [2020-12-01 16:03:56,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:56,551 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:56,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125647516] [2020-12-01 16:03:56,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877979289] [2020-12-01 16:03:56,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/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 [2020-12-01 16:03:56,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 16:03:56,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 16:03:56,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-01 16:03:56,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:03:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:56,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 16:03:56,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2020-12-01 16:03:56,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368883959] [2020-12-01 16:03:56,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-01 16:03:56,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:56,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-01 16:03:56,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-12-01 16:03:56,841 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 17 states. [2020-12-01 16:03:57,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:57,180 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2020-12-01 16:03:57,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 16:03:57,180 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2020-12-01 16:03:57,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:57,182 INFO L225 Difference]: With dead ends: 73 [2020-12-01 16:03:57,182 INFO L226 Difference]: Without dead ends: 49 [2020-12-01 16:03:57,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2020-12-01 16:03:57,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-01 16:03:57,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-12-01 16:03:57,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-01 16:03:57,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-12-01 16:03:57,198 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2020-12-01 16:03:57,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:57,201 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-12-01 16:03:57,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-01 16:03:57,201 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-12-01 16:03:57,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-01 16:03:57,208 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:57,208 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:57,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:03:57,436 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:57,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:57,436 INFO L82 PathProgramCache]: Analyzing trace with hash 815572442, now seen corresponding path program 2 times [2020-12-01 16:03:57,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:57,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996119728] [2020-12-01 16:03:57,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:57,614 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:57,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996119728] [2020-12-01 16:03:57,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472715775] [2020-12-01 16:03:57,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/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 [2020-12-01 16:03:57,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 16:03:57,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 16:03:57,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-01 16:03:57,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:03:57,905 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:03:57,914 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:03:58,021 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:03:58,024 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:03:58,053 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:58,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 16:03:58,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2020-12-01 16:03:58,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007978758] [2020-12-01 16:03:58,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-01 16:03:58,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:58,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-01 16:03:58,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2020-12-01 16:03:58,056 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2020-12-01 16:03:58,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:58,784 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2020-12-01 16:03:58,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-01 16:03:58,785 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2020-12-01 16:03:58,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:58,786 INFO L225 Difference]: With dead ends: 66 [2020-12-01 16:03:58,786 INFO L226 Difference]: Without dead ends: 62 [2020-12-01 16:03:58,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=254, Invalid=868, Unknown=0, NotChecked=0, Total=1122 [2020-12-01 16:03:58,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-01 16:03:58,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-12-01 16:03:58,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-01 16:03:58,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2020-12-01 16:03:58,806 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 42 [2020-12-01 16:03:58,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:58,806 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2020-12-01 16:03:58,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-01 16:03:58,806 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2020-12-01 16:03:58,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-01 16:03:58,808 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:58,808 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:59,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-01 16:03:59,036 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:59,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:59,036 INFO L82 PathProgramCache]: Analyzing trace with hash 325298885, now seen corresponding path program 3 times [2020-12-01 16:03:59,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:59,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635677474] [2020-12-01 16:03:59,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:59,342 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:59,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635677474] [2020-12-01 16:03:59,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851879980] [2020-12-01 16:03:59,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/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 [2020-12-01 16:03:59,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-01 16:03:59,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 16:03:59,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-01 16:03:59,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:03:59,865 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 16:03:59,870 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:03:59,960 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:03:59,962 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:04:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:04:00,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 16:04:00,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 29 [2020-12-01 16:04:00,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593464613] [2020-12-01 16:04:00,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-01 16:04:00,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:04:00,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-01 16:04:00,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2020-12-01 16:04:00,009 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 29 states. [2020-12-01 16:04:01,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:04:01,741 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2020-12-01 16:04:01,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-01 16:04:01,749 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 53 [2020-12-01 16:04:01,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:04:01,750 INFO L225 Difference]: With dead ends: 99 [2020-12-01 16:04:01,750 INFO L226 Difference]: Without dead ends: 95 [2020-12-01 16:04:01,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=604, Invalid=2588, Unknown=0, NotChecked=0, Total=3192 [2020-12-01 16:04:01,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-01 16:04:01,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 87. [2020-12-01 16:04:01,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-01 16:04:01,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2020-12-01 16:04:01,761 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 53 [2020-12-01 16:04:01,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:04:01,762 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2020-12-01 16:04:01,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-12-01 16:04:01,762 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2020-12-01 16:04:01,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-01 16:04:01,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:04:01,763 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:04:01,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:04:01,980 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:04:01,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:04:01,980 INFO L82 PathProgramCache]: Analyzing trace with hash 665529370, now seen corresponding path program 4 times [2020-12-01 16:04:01,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:04:01,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292880188] [2020-12-01 16:04:01,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:04:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:04:02,701 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-01 16:04:02,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292880188] [2020-12-01 16:04:02,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638085524] [2020-12-01 16:04:02,701 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/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 [2020-12-01 16:04:02,775 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-01 16:04:02,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 16:04:02,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-01 16:04:02,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:04:03,362 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:04:03,364 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:04:03,474 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:04:03,488 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:04:03,525 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:04:03,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 16:04:03,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 41 [2020-12-01 16:04:03,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266097982] [2020-12-01 16:04:03,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-12-01 16:04:03,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:04:03,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-12-01 16:04:03,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1429, Unknown=0, NotChecked=0, Total=1640 [2020-12-01 16:04:03,527 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 41 states. [2020-12-01 16:04:06,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:04:06,457 INFO L93 Difference]: Finished difference Result 106 states and 107 transitions. [2020-12-01 16:04:06,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-12-01 16:04:06,458 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 86 [2020-12-01 16:04:06,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:04:06,458 INFO L225 Difference]: With dead ends: 106 [2020-12-01 16:04:06,458 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 16:04:06,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2432 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1177, Invalid=7195, Unknown=0, NotChecked=0, Total=8372 [2020-12-01 16:04:06,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 16:04:06,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 16:04:06,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 16:04:06,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 16:04:06,462 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 86 [2020-12-01 16:04:06,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:04:06,462 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 16:04:06,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-12-01 16:04:06,462 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 16:04:06,462 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 16:04:06,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:04:06,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 16:04:07,092 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 30 [2020-12-01 16:04:07,363 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 32 [2020-12-01 16:04:07,498 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 30 [2020-12-01 16:04:07,607 INFO L258 CegarLoopResult]: At program point L18-17(lines 17 22) the Hoare annotation is: (let ((.cse0 (<= 3 ULTIMATE.start_main_~inlen~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~in~0)) (.cse3 (<= 0 ULTIMATE.start_main_~buf~0))) (or (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~buf~0 0) (<= 2 ULTIMATE.start_main_~bufferlen~0)) (and .cse0 (<= 3 ULTIMATE.start_main_~bufferlen~0) .cse1 (<= ULTIMATE.start_main_~buf~0 1) .cse2 .cse3) (and .cse0 .cse1 (<= (+ ULTIMATE.start_main_~buf~0 2) ULTIMATE.start_main_~bufferlen~0) (= ULTIMATE.start_main_~bufferlen~0 (+ ULTIMATE.start_main_~buflim~0 2)) .cse2 .cse3))) [2020-12-01 16:04:07,607 INFO L262 CegarLoopResult]: For program point L18-18(lines 18 20) no Hoare annotation was computed. [2020-12-01 16:04:07,607 INFO L258 CegarLoopResult]: At program point L18-20(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= (+ ULTIMATE.start_main_~buf~0 1) ULTIMATE.start_main_~bufferlen~0) (<= 2 ULTIMATE.start_main_~bufferlen~0) (<= 0 ULTIMATE.start_main_~buf~0)) [2020-12-01 16:04:07,607 INFO L262 CegarLoopResult]: For program point L18-21(lines 18 20) no Hoare annotation was computed. [2020-12-01 16:04:07,607 INFO L265 CegarLoopResult]: At program point L18-23(lines 17 22) the Hoare annotation is: true [2020-12-01 16:04:07,607 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,608 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-12-01 16:04:07,608 INFO L262 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-12-01 16:04:07,608 INFO L262 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-12-01 16:04:07,608 INFO L262 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2020-12-01 16:04:07,608 INFO L262 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-12-01 16:04:07,608 INFO L262 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2020-12-01 16:04:07,608 INFO L262 CegarLoopResult]: For program point L19-6(line 19) no Hoare annotation was computed. [2020-12-01 16:04:07,608 INFO L262 CegarLoopResult]: For program point L44(lines 44 45) no Hoare annotation was computed. [2020-12-01 16:04:07,608 INFO L262 CegarLoopResult]: For program point L19-7(line 19) no Hoare annotation was computed. [2020-12-01 16:04:07,608 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,608 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 16:04:07,609 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 16:04:07,609 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,609 INFO L262 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,609 INFO L262 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,609 INFO L262 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,609 INFO L262 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,609 INFO L262 CegarLoopResult]: For program point L12-7(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,609 INFO L262 CegarLoopResult]: For program point L37-1(lines 37 48) no Hoare annotation was computed. [2020-12-01 16:04:07,609 INFO L262 CegarLoopResult]: For program point L12-8(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,609 INFO L262 CegarLoopResult]: For program point L12-10(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,609 INFO L262 CegarLoopResult]: For program point L37-3(lines 37 48) no Hoare annotation was computed. [2020-12-01 16:04:07,609 INFO L262 CegarLoopResult]: For program point L12-11(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,610 INFO L262 CegarLoopResult]: For program point L12-12(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,610 INFO L262 CegarLoopResult]: For program point L12-14(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,610 INFO L262 CegarLoopResult]: For program point L12-15(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,610 INFO L262 CegarLoopResult]: For program point L12-16(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,610 INFO L262 CegarLoopResult]: For program point L12-18(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,610 INFO L262 CegarLoopResult]: For program point L12-19(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,610 INFO L262 CegarLoopResult]: For program point L12-20(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,610 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,610 INFO L262 CegarLoopResult]: For program point L12-22(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,610 INFO L262 CegarLoopResult]: For program point L12-23(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,610 INFO L262 CegarLoopResult]: For program point L12-24(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,610 INFO L262 CegarLoopResult]: For program point L12-26(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,610 INFO L262 CegarLoopResult]: For program point L12-27(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,611 INFO L262 CegarLoopResult]: For program point L12-28(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,611 INFO L262 CegarLoopResult]: For program point L12-30(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,611 INFO L262 CegarLoopResult]: For program point L12-31(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,611 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,611 INFO L265 CegarLoopResult]: At program point L55(lines 25 56) the Hoare annotation is: true [2020-12-01 16:04:07,611 INFO L265 CegarLoopResult]: At program point L55-1(lines 24 56) the Hoare annotation is: true [2020-12-01 16:04:07,611 INFO L262 CegarLoopResult]: For program point L39(lines 39 40) no Hoare annotation was computed. [2020-12-01 16:04:07,611 INFO L262 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-12-01 16:04:07,611 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,611 INFO L262 CegarLoopResult]: For program point L31-1(lines 25 56) no Hoare annotation was computed. [2020-12-01 16:04:07,611 INFO L262 CegarLoopResult]: For program point L32(lines 25 56) no Hoare annotation was computed. [2020-12-01 16:04:07,611 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 16:04:07,611 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,611 INFO L262 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-12-01 16:04:07,611 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 16:04:07,611 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,612 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-01 16:04:07,612 INFO L262 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-12-01 16:04:07,612 INFO L258 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (< ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~buflim~0)) (.cse1 (+ ULTIMATE.start_main_~buflim~0 2))) (or (and (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) .cse0 (= ULTIMATE.start_main_~bufferlen~0 .cse1) (<= (+ ULTIMATE.start_main_~buflim~0 ULTIMATE.start_main_~in~0 3) (+ ULTIMATE.start_main_~inlen~0 ULTIMATE.start_main_~buf~0)) (<= 1 ULTIMATE.start_main_~in~0) .cse2 (<= 0 ULTIMATE.start_main_~buf~0)) (and (<= .cse1 ULTIMATE.start_main_~bufferlen~0) (= ULTIMATE.start_main_~buf~0 0) .cse0 (< ULTIMATE.start_main_~bufferlen~0 ULTIMATE.start_main_~inlen~0) .cse2 (= ULTIMATE.start_main_~in~0 0) (<= ULTIMATE.start_main_~bufferlen~0 .cse1)))) [2020-12-01 16:04:07,612 INFO L262 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2020-12-01 16:04:07,612 INFO L258 CegarLoopResult]: At program point L18-5(lines 17 22) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (< ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~buflim~0)) (.cse1 (+ ULTIMATE.start_main_~buflim~0 2))) (or (and (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) .cse0 (<= (+ ULTIMATE.start_main_~buflim~0 ULTIMATE.start_main_~in~0 3) (+ ULTIMATE.start_main_~inlen~0 ULTIMATE.start_main_~buf~0)) (= ULTIMATE.start_main_~bufferlen~0 .cse1) (<= 1 ULTIMATE.start_main_~in~0) .cse2 (<= 0 ULTIMATE.start_main_~buf~0)) (and (<= .cse1 ULTIMATE.start_main_~bufferlen~0) (= ULTIMATE.start_main_~buf~0 0) .cse0 (< ULTIMATE.start_main_~bufferlen~0 ULTIMATE.start_main_~inlen~0) .cse2 (= ULTIMATE.start_main_~in~0 0) (<= ULTIMATE.start_main_~bufferlen~0 .cse1)))) [2020-12-01 16:04:07,612 INFO L262 CegarLoopResult]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2020-12-01 16:04:07,613 INFO L258 CegarLoopResult]: At program point L18-8(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= (+ ULTIMATE.start_main_~buf~0 2) ULTIMATE.start_main_~bufferlen~0) (<= (+ ULTIMATE.start_main_~buflim~0 ULTIMATE.start_main_~in~0 3) (+ ULTIMATE.start_main_~inlen~0 ULTIMATE.start_main_~buf~0)) (= ULTIMATE.start_main_~bufferlen~0 (+ ULTIMATE.start_main_~buflim~0 2)) (<= 1 ULTIMATE.start_main_~in~0) (<= 0 ULTIMATE.start_main_~buf~0)) [2020-12-01 16:04:07,613 INFO L262 CegarLoopResult]: For program point L18-9(lines 18 20) no Hoare annotation was computed. [2020-12-01 16:04:07,613 INFO L258 CegarLoopResult]: At program point L18-11(lines 17 48) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~buflim~0 2))) (or (and (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= (+ ULTIMATE.start_main_~buf~0 2) ULTIMATE.start_main_~bufferlen~0) (<= (+ ULTIMATE.start_main_~buflim~0 ULTIMATE.start_main_~in~0 3) (+ ULTIMATE.start_main_~inlen~0 ULTIMATE.start_main_~buf~0)) (= ULTIMATE.start_main_~bufferlen~0 .cse0) (<= 1 ULTIMATE.start_main_~in~0) (<= 0 ULTIMATE.start_main_~buf~0)) (and (<= .cse0 ULTIMATE.start_main_~bufferlen~0) (= ULTIMATE.start_main_~buf~0 0) (< ULTIMATE.start_main_~bufferlen~0 ULTIMATE.start_main_~inlen~0) (<= 0 ULTIMATE.start_main_~buflim~0) (= ULTIMATE.start_main_~in~0 0) (<= ULTIMATE.start_main_~bufferlen~0 .cse0)))) [2020-12-01 16:04:07,613 INFO L262 CegarLoopResult]: For program point L18-12(lines 18 20) no Hoare annotation was computed. [2020-12-01 16:04:07,613 INFO L258 CegarLoopResult]: At program point L18-14(lines 17 22) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (.cse1 (<= 1 ULTIMATE.start_main_~in~0)) (.cse2 (<= 0 ULTIMATE.start_main_~buf~0))) (or (and .cse0 (<= (+ ULTIMATE.start_main_~in~0 2) ULTIMATE.start_main_~inlen~0) (<= 3 ULTIMATE.start_main_~bufferlen~0) (<= ULTIMATE.start_main_~buf~0 1) .cse1 .cse2) (and .cse0 (= ULTIMATE.start_main_~buf~0 0) (<= 2 ULTIMATE.start_main_~bufferlen~0) (= ULTIMATE.start_main_~in~0 0)) (and (<= 3 ULTIMATE.start_main_~inlen~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= (+ ULTIMATE.start_main_~buf~0 2) ULTIMATE.start_main_~bufferlen~0) (= ULTIMATE.start_main_~bufferlen~0 (+ ULTIMATE.start_main_~buflim~0 2)) .cse1 .cse2))) [2020-12-01 16:04:07,614 INFO L262 CegarLoopResult]: For program point L18-15(lines 18 20) no Hoare annotation was computed. [2020-12-01 16:04:07,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 04:04:07 BoogieIcfgContainer [2020-12-01 16:04:07,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 16:04:07,634 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 16:04:07,634 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 16:04:07,635 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 16:04:07,635 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:03:51" (3/4) ... [2020-12-01 16:04:07,638 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 16:04:07,651 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-01 16:04:07,651 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 16:04:07,651 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 16:04:07,652 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 16:04:07,707 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_73d91407-74fb-4ecb-b134-721bcf47aa47/bin/uautomizer/witness.graphml [2020-12-01 16:04:07,707 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 16:04:07,709 INFO L168 Benchmark]: Toolchain (without parser) took 16618.27 ms. Allocated memory was 130.0 MB in the beginning and 272.6 MB in the end (delta: 142.6 MB). Free memory was 105.2 MB in the beginning and 176.3 MB in the end (delta: -71.0 MB). Peak memory consumption was 72.3 MB. Max. memory is 16.1 GB. [2020-12-01 16:04:07,709 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 94.4 MB. Free memory is still 52.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:04:07,709 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.39 ms. Allocated memory is still 130.0 MB. Free memory was 105.0 MB in the beginning and 107.5 MB in the end (delta: -2.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 16:04:07,710 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.06 ms. Allocated memory is still 130.0 MB. Free memory was 107.5 MB in the beginning and 105.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:04:07,710 INFO L168 Benchmark]: Boogie Preprocessor took 25.35 ms. Allocated memory is still 130.0 MB. Free memory was 105.7 MB in the beginning and 104.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:04:07,711 INFO L168 Benchmark]: RCFGBuilder took 488.87 ms. Allocated memory is still 130.0 MB. Free memory was 104.3 MB in the beginning and 85.7 MB in the end (delta: 18.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-01 16:04:07,712 INFO L168 Benchmark]: TraceAbstraction took 15692.01 ms. Allocated memory was 130.0 MB in the beginning and 272.6 MB in the end (delta: 142.6 MB). Free memory was 85.2 MB in the beginning and 180.4 MB in the end (delta: -95.2 MB). Peak memory consumption was 141.2 MB. Max. memory is 16.1 GB. [2020-12-01 16:04:07,712 INFO L168 Benchmark]: Witness Printer took 73.28 ms. Allocated memory is still 272.6 MB. Free memory was 180.4 MB in the beginning and 176.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 16:04:07,715 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 94.4 MB. Free memory is still 52.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 295.39 ms. Allocated memory is still 130.0 MB. Free memory was 105.0 MB in the beginning and 107.5 MB in the end (delta: -2.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.06 ms. Allocated memory is still 130.0 MB. Free memory was 107.5 MB in the beginning and 105.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.35 ms. Allocated memory is still 130.0 MB. Free memory was 105.7 MB in the beginning and 104.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 488.87 ms. Allocated memory is still 130.0 MB. Free memory was 104.3 MB in the beginning and 85.7 MB in the end (delta: 18.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15692.01 ms. Allocated memory was 130.0 MB in the beginning and 272.6 MB in the end (delta: 142.6 MB). Free memory was 85.2 MB in the beginning and 180.4 MB in the end (delta: -95.2 MB). Peak memory consumption was 141.2 MB. Max. memory is 16.1 GB. * Witness Printer took 73.28 ms. Allocated memory is still 272.6 MB. Free memory was 180.4 MB in the beginning and 176.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((bufferlen + 1 <= inlen && 1 == cond) && buf + 2 <= bufferlen) && buflim + in + 3 <= inlen + buf) && bufferlen == buflim + 2) && 1 <= in) && 0 <= buf - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((bufferlen + 1 <= inlen && 1 == cond) && bufferlen == buflim + 2) && buflim + in + 3 <= inlen + buf) && 1 <= in) && buf < buflim) && 0 <= buf) || ((((((buflim + 2 <= bufferlen && buf == 0) && 1 == cond) && bufferlen < inlen) && buf < buflim) && in == 0) && bufferlen <= buflim + 2) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((!(0 == cond) && buf == 0) && 2 <= bufferlen) || (((((3 <= inlen && 3 <= bufferlen) && 1 == cond) && buf <= 1) && 1 <= in) && 0 <= buf)) || (((((3 <= inlen && 1 == cond) && buf + 2 <= bufferlen) && bufferlen == buflim + 2) && 1 <= in) && 0 <= buf) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((bufferlen + 1 <= inlen && 1 == cond) && buf + 2 <= bufferlen) && buflim + in + 3 <= inlen + buf) && bufferlen == buflim + 2) && 1 <= in) && 0 <= buf) || (((((buflim + 2 <= bufferlen && buf == 0) && bufferlen < inlen) && 0 <= buflim) && in == 0) && bufferlen <= buflim + 2) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((bufferlen + 1 <= inlen && 1 == cond) && buflim + in + 3 <= inlen + buf) && bufferlen == buflim + 2) && 1 <= in) && buf < buflim) && 0 <= buf) || ((((((buflim + 2 <= bufferlen && buf == 0) && 1 == cond) && bufferlen < inlen) && buf < buflim) && in == 0) && bufferlen <= buflim + 2) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((!(0 == cond) && buf + 1 <= bufferlen) && 2 <= bufferlen) && 0 <= buf - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((!(0 == cond) && in + 2 <= inlen) && 3 <= bufferlen) && buf <= 1) && 1 <= in) && 0 <= buf) || (((!(0 == cond) && buf == 0) && 2 <= bufferlen) && in == 0)) || (((((3 <= inlen && 1 == cond) && buf + 2 <= bufferlen) && bufferlen == buflim + 2) && 1 <= in) && 0 <= buf) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 70 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.6s, OverallIterations: 13, TraceHistogramMax: 7, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 466 SDtfs, 1449 SDslu, 1937 SDs, 0 SdLazy, 2566 SolverSat, 767 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 545 GetRequests, 263 SyntacticMatches, 6 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3857 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 69 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 58 NumberOfFragments, 339 HoareAnnotationTreeSize, 10 FomulaSimplifications, 21402 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 1879 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 721 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 701 ConstructedInterpolants, 0 QuantifiedInterpolants, 284717 SizeOfPredicates, 51 NumberOfNonLiveVariables, 912 ConjunctsInSsa, 151 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 12/734 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...