./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ec9a6846-7103-46f6-b228-5ddd51e896d4/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ec9a6846-7103-46f6-b228-5ddd51e896d4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ec9a6846-7103-46f6-b228-5ddd51e896d4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ec9a6846-7103-46f6-b228-5ddd51e896d4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ec9a6846-7103-46f6-b228-5ddd51e896d4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ec9a6846-7103-46f6-b228-5ddd51e896d4/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d5e1e94b71e060a77443e2afd511bc50cc1649d .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:31:04,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:31:04,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:31:04,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:31:04,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:31:04,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:31:04,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:31:04,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:31:04,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:31:04,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:31:04,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:31:04,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:31:04,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:31:04,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:31:04,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:31:04,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:31:04,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:31:04,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:31:04,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:31:04,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:31:04,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:31:04,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:31:04,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:31:04,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:31:04,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:31:04,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:31:04,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:31:04,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:31:04,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:31:04,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:31:04,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:31:04,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:31:04,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:31:04,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:31:04,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:31:04,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:31:04,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:31:04,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:31:04,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:31:04,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:31:04,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:31:04,483 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ec9a6846-7103-46f6-b228-5ddd51e896d4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:31:04,541 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:31:04,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:31:04,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:31:04,543 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:31:04,543 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:31:04,543 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:31:04,544 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:31:04,544 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:31:04,544 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:31:04,544 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:31:04,545 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:31:04,546 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:31:04,546 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:31:04,546 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:31:04,546 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:31:04,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:31:04,547 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:31:04,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:31:04,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:31:04,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:31:04,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:31:04,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:31:04,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:31:04,558 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:31:04,558 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:31:04,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:31:04,559 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:31:04,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:31:04,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:31:04,559 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:31:04,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:31:04,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:31:04,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:31:04,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:31:04,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:31:04,560 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:31:04,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:31:04,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:31:04,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:31:04,561 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:31:04,561 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_ec9a6846-7103-46f6-b228-5ddd51e896d4/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ec9a6846-7103-46f6-b228-5ddd51e896d4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d5e1e94b71e060a77443e2afd511bc50cc1649d [2020-11-28 07:31:04,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:31:04,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:31:04,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:31:04,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:31:04,820 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:31:04,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ec9a6846-7103-46f6-b228-5ddd51e896d4/bin/utaipan/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i [2020-11-28 07:31:04,876 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ec9a6846-7103-46f6-b228-5ddd51e896d4/bin/utaipan/data/69869fb6b/a8c5589024794eab9d81c14668e70420/FLAG44dba3449 [2020-11-28 07:31:05,278 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:31:05,278 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ec9a6846-7103-46f6-b228-5ddd51e896d4/sv-benchmarks/c/loop-invgen/apache-get-tag.i [2020-11-28 07:31:05,284 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ec9a6846-7103-46f6-b228-5ddd51e896d4/bin/utaipan/data/69869fb6b/a8c5589024794eab9d81c14668e70420/FLAG44dba3449 [2020-11-28 07:31:05,698 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ec9a6846-7103-46f6-b228-5ddd51e896d4/bin/utaipan/data/69869fb6b/a8c5589024794eab9d81c14668e70420 [2020-11-28 07:31:05,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:31:05,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:31:05,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:31:05,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:31:05,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:31:05,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:31:05" (1/1) ... [2020-11-28 07:31:05,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2984632b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:05, skipping insertion in model container [2020-11-28 07:31:05,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:31:05" (1/1) ... [2020-11-28 07:31:05,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:31:05,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:31:05,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:31:05,934 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:31:05,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:31:05,969 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:31:05,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:05 WrapperNode [2020-11-28 07:31:05,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:31:05,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:31:05,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:31:05,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:31:05,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:05" (1/1) ... [2020-11-28 07:31:05,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:05" (1/1) ... [2020-11-28 07:31:06,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:31:06,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:31:06,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:31:06,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:31:06,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:05" (1/1) ... [2020-11-28 07:31:06,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:05" (1/1) ... [2020-11-28 07:31:06,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:05" (1/1) ... [2020-11-28 07:31:06,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:05" (1/1) ... [2020-11-28 07:31:06,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:05" (1/1) ... [2020-11-28 07:31:06,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:05" (1/1) ... [2020-11-28 07:31:06,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:05" (1/1) ... [2020-11-28 07:31:06,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:31:06,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:31:06,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:31:06,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:31:06,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec9a6846-7103-46f6-b228-5ddd51e896d4/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:31:06,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:31:06,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:31:06,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:31:06,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:31:06,769 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:31:06,769 INFO L298 CfgBuilder]: Removed 70 assume(true) statements. [2020-11-28 07:31:06,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:31:06 BoogieIcfgContainer [2020-11-28 07:31:06,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:31:06,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:31:06,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:31:06,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:31:06,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:31:05" (1/3) ... [2020-11-28 07:31:06,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466a01bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:31:06, skipping insertion in model container [2020-11-28 07:31:06,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:05" (2/3) ... [2020-11-28 07:31:06,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466a01bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:31:06, skipping insertion in model container [2020-11-28 07:31:06,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:31:06" (3/3) ... [2020-11-28 07:31:06,780 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2020-11-28 07:31:06,789 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:31:06,793 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-11-28 07:31:06,803 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-11-28 07:31:06,824 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:31:06,824 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:31:06,824 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:31:06,824 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:31:06,824 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:31:06,825 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:31:06,825 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:31:06,825 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:31:06,844 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2020-11-28 07:31:06,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:31:06,849 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:31:06,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:31:06,851 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:31:06,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:31:06,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1541448954, now seen corresponding path program 1 times [2020-11-28 07:31:06,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:31:06,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442440087] [2020-11-28 07:31:06,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:31:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:31:06,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:31:06,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442440087] [2020-11-28 07:31:06,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:31:06,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:31:06,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062079762] [2020-11-28 07:31:06,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:31:06,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:31:07,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:31:07,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:31:07,010 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 2 states. [2020-11-28 07:31:07,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:31:07,038 INFO L93 Difference]: Finished difference Result 198 states and 279 transitions. [2020-11-28 07:31:07,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:31:07,040 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-28 07:31:07,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:31:07,049 INFO L225 Difference]: With dead ends: 198 [2020-11-28 07:31:07,049 INFO L226 Difference]: Without dead ends: 90 [2020-11-28 07:31:07,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:31:07,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-11-28 07:31:07,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-11-28 07:31:07,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-11-28 07:31:07,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2020-11-28 07:31:07,093 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 7 [2020-11-28 07:31:07,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:31:07,094 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2020-11-28 07:31:07,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:31:07,094 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2020-11-28 07:31:07,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:31:07,095 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:31:07,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:31:07,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:31:07,096 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:31:07,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:31:07,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1896790105, now seen corresponding path program 1 times [2020-11-28 07:31:07,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:31:07,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968046762] [2020-11-28 07:31:07,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:31:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:31:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:31:07,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968046762] [2020-11-28 07:31:07,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:31:07,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:31:07,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407315198] [2020-11-28 07:31:07,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:31:07,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:31:07,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:31:07,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:31:07,208 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand 4 states. [2020-11-28 07:31:07,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:31:07,534 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2020-11-28 07:31:07,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:31:07,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 07:31:07,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:31:07,535 INFO L225 Difference]: With dead ends: 94 [2020-11-28 07:31:07,536 INFO L226 Difference]: Without dead ends: 70 [2020-11-28 07:31:07,537 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 [2020-11-28 07:31:07,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-28 07:31:07,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2020-11-28 07:31:07,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-28 07:31:07,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-11-28 07:31:07,547 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 7 [2020-11-28 07:31:07,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:31:07,547 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-11-28 07:31:07,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:31:07,547 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-11-28 07:31:07,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:31:07,548 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:31:07,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:31:07,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:31:07,549 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:31:07,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:31:07,549 INFO L82 PathProgramCache]: Analyzing trace with hash -2072703358, now seen corresponding path program 1 times [2020-11-28 07:31:07,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:31:07,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194639255] [2020-11-28 07:31:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:31:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:31:07,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:31:07,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194639255] [2020-11-28 07:31:07,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:31:07,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:31:07,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268683452] [2020-11-28 07:31:07,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:31:07,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:31:07,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:31:07,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:31:07,646 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 5 states. [2020-11-28 07:31:07,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:31:07,877 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2020-11-28 07:31:07,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:31:07,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-28 07:31:07,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:31:07,879 INFO L225 Difference]: With dead ends: 87 [2020-11-28 07:31:07,879 INFO L226 Difference]: Without dead ends: 60 [2020-11-28 07:31:07,880 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 [2020-11-28 07:31:07,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-28 07:31:07,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-11-28 07:31:07,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-28 07:31:07,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-11-28 07:31:07,897 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 9 [2020-11-28 07:31:07,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:31:07,898 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-11-28 07:31:07,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:31:07,898 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-11-28 07:31:07,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:31:07,899 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:31:07,900 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:31:07,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:31:07,900 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:31:07,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:31:07,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1487169254, now seen corresponding path program 1 times [2020-11-28 07:31:07,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:31:07,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244397398] [2020-11-28 07:31:07,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:31:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:31:08,152 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:31:08,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244397398] [2020-11-28 07:31:08,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085453987] [2020-11-28 07:31:08,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec9a6846-7103-46f6-b228-5ddd51e896d4/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:31:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:31:08,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 07:31:08,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:31:08,537 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:31:08,555 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 07:31:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:31:08,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:31:08,621 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:31:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:31:08,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1217952948] [2020-11-28 07:31:08,724 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2020-11-28 07:31:08,724 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:31:08,730 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:31:08,747 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:31:08,750 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:31:09,380 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:31:09,498 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-11-28 07:31:09,635 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-11-28 07:31:10,031 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-11-28 07:31:10,450 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2020-11-28 07:31:10,879 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2020-11-28 07:31:11,208 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:31:11,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:31:11,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2020-11-28 07:31:11,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592204717] [2020-11-28 07:31:11,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 07:31:11,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:31:11,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 07:31:11,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-11-28 07:31:11,218 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 12 states. [2020-11-28 07:31:11,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:31:11,640 INFO L93 Difference]: Finished difference Result 90 states and 102 transitions. [2020-11-28 07:31:11,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 07:31:11,640 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-11-28 07:31:11,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:31:11,641 INFO L225 Difference]: With dead ends: 90 [2020-11-28 07:31:11,641 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:31:11,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2020-11-28 07:31:11,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:31:11,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:31:11,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:31:11,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:31:11,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-28 07:31:11,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:31:11,645 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:31:11,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 07:31:11,645 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:31:11,646 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:31:11,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2020-11-28 07:31:11,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:31:12,190 INFO L270 CegarLoopResult]: At program point L18-17(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~t~0 1) ULTIMATE.start_main_~tagbuf_len~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~t~0)) [2020-11-28 07:31:12,190 INFO L274 CegarLoopResult]: For program point L18-18(lines 18 20) no Hoare annotation was computed. [2020-11-28 07:31:12,190 INFO L270 CegarLoopResult]: At program point L18-20(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2020-11-28 07:31:12,190 INFO L274 CegarLoopResult]: For program point L18-21(lines 18 20) no Hoare annotation was computed. [2020-11-28 07:31:12,191 INFO L274 CegarLoopResult]: For program point L18-24(lines 18 20) no Hoare annotation was computed. [2020-11-28 07:31:12,191 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,191 INFO L270 CegarLoopResult]: At program point L18-26(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= (+ ULTIMATE.start_main_~t~0 1) ULTIMATE.start_main_~tagbuf_len~0) (<= 0 ULTIMATE.start_main_~t~0)) [2020-11-28 07:31:12,191 INFO L274 CegarLoopResult]: For program point L18-27(lines 18 20) no Hoare annotation was computed. [2020-11-28 07:31:12,191 INFO L270 CegarLoopResult]: At program point L18-29(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~t~0 1) ULTIMATE.start_main_~tagbuf_len~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~t~0)) [2020-11-28 07:31:12,191 INFO L274 CegarLoopResult]: For program point L18-30(lines 18 20) no Hoare annotation was computed. [2020-11-28 07:31:12,191 INFO L270 CegarLoopResult]: At program point L18-32(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2020-11-28 07:31:12,191 INFO L274 CegarLoopResult]: For program point L18-33(lines 18 20) no Hoare annotation was computed. [2020-11-28 07:31:12,192 INFO L274 CegarLoopResult]: For program point L18-36(lines 18 20) no Hoare annotation was computed. [2020-11-28 07:31:12,192 INFO L270 CegarLoopResult]: At program point L18-38(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= (+ ULTIMATE.start_main_~t~0 1) ULTIMATE.start_main_~tagbuf_len~0) (<= 0 ULTIMATE.start_main_~t~0)) [2020-11-28 07:31:12,192 INFO L274 CegarLoopResult]: For program point L18-39(lines 18 20) no Hoare annotation was computed. [2020-11-28 07:31:12,192 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,192 INFO L270 CegarLoopResult]: At program point L18-41(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~t~0 1) ULTIMATE.start_main_~tagbuf_len~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~t~0)) [2020-11-28 07:31:12,192 INFO L274 CegarLoopResult]: For program point L18-42(lines 18 20) no Hoare annotation was computed. [2020-11-28 07:31:12,192 INFO L270 CegarLoopResult]: At program point L18-44(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= (+ ULTIMATE.start_main_~t~0 1) ULTIMATE.start_main_~tagbuf_len~0) (<= 0 ULTIMATE.start_main_~t~0)) [2020-11-28 07:31:12,193 INFO L274 CegarLoopResult]: For program point L18-45(lines 18 20) no Hoare annotation was computed. [2020-11-28 07:31:12,193 INFO L277 CegarLoopResult]: At program point L18-47(lines 17 22) the Hoare annotation is: true [2020-11-28 07:31:12,193 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:31:12,193 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,193 INFO L274 CegarLoopResult]: For program point L54(lines 54 68) no Hoare annotation was computed. [2020-11-28 07:31:12,193 INFO L274 CegarLoopResult]: For program point L54-1(lines 54 68) no Hoare annotation was computed. [2020-11-28 07:31:12,193 INFO L274 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-11-28 07:31:12,193 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,193 INFO L274 CegarLoopResult]: For program point L55(lines 55 64) no Hoare annotation was computed. [2020-11-28 07:31:12,194 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,194 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:31:12,194 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,194 INFO L274 CegarLoopResult]: For program point L59(lines 59 63) no Hoare annotation was computed. [2020-11-28 07:31:12,194 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,194 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,194 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,194 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,195 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,195 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,195 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,195 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,195 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,195 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,195 INFO L274 CegarLoopResult]: For program point L12-7(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,195 INFO L274 CegarLoopResult]: For program point L12-8(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,195 INFO L274 CegarLoopResult]: For program point L12-10(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,195 INFO L274 CegarLoopResult]: For program point L12-11(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,196 INFO L274 CegarLoopResult]: For program point L12-12(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,196 INFO L274 CegarLoopResult]: For program point L12-14(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,196 INFO L274 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-11-28 07:31:12,196 INFO L274 CegarLoopResult]: For program point L12-15(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,196 INFO L274 CegarLoopResult]: For program point L12-16(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,196 INFO L274 CegarLoopResult]: For program point L12-18(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,196 INFO L274 CegarLoopResult]: For program point L12-19(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,196 INFO L274 CegarLoopResult]: For program point L12-20(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,196 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,197 INFO L274 CegarLoopResult]: For program point L12-22(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,197 INFO L274 CegarLoopResult]: For program point L12-23(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,197 INFO L274 CegarLoopResult]: For program point L12-24(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,197 INFO L274 CegarLoopResult]: For program point L12-26(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,197 INFO L274 CegarLoopResult]: For program point L12-27(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,197 INFO L274 CegarLoopResult]: For program point L12-28(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,197 INFO L274 CegarLoopResult]: For program point L12-30(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,201 INFO L274 CegarLoopResult]: For program point L12-31(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,201 INFO L274 CegarLoopResult]: For program point L12-32(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,201 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,201 INFO L274 CegarLoopResult]: For program point L12-34(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,201 INFO L274 CegarLoopResult]: For program point L12-35(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,201 INFO L274 CegarLoopResult]: For program point L12-36(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,201 INFO L274 CegarLoopResult]: For program point L12-38(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,201 INFO L274 CegarLoopResult]: For program point L12-39(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,202 INFO L274 CegarLoopResult]: For program point L12-40(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,202 INFO L274 CegarLoopResult]: For program point L12-42(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,203 INFO L274 CegarLoopResult]: For program point L12-43(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,203 INFO L274 CegarLoopResult]: For program point L12-44(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,203 INFO L274 CegarLoopResult]: For program point L12-46(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,203 INFO L274 CegarLoopResult]: For program point L12-47(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,203 INFO L274 CegarLoopResult]: For program point L12-48(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,203 INFO L274 CegarLoopResult]: For program point L12-50(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,203 INFO L274 CegarLoopResult]: For program point L12-51(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,203 INFO L274 CegarLoopResult]: For program point L12-52(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,204 INFO L274 CegarLoopResult]: For program point L12-54(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,204 INFO L274 CegarLoopResult]: For program point L12-55(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,204 INFO L274 CegarLoopResult]: For program point L12-56(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,204 INFO L274 CegarLoopResult]: For program point L12-58(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,204 INFO L274 CegarLoopResult]: For program point L12-59(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,204 INFO L274 CegarLoopResult]: For program point L12-60(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,204 INFO L274 CegarLoopResult]: For program point L12-62(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,204 INFO L274 CegarLoopResult]: For program point L12-63(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,204 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,205 INFO L270 CegarLoopResult]: At program point L48-2(lines 48 72) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2020-11-28 07:31:12,205 INFO L274 CegarLoopResult]: For program point L48-3(lines 48 72) no Hoare annotation was computed. [2020-11-28 07:31:12,205 INFO L270 CegarLoopResult]: At program point L32-2(lines 32 44) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0))) (or (and (= ULTIMATE.start_main_~t~0 0) .cse0) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~t~0) .cse0))) [2020-11-28 07:31:12,205 INFO L274 CegarLoopResult]: For program point L32-3(lines 32 44) no Hoare annotation was computed. [2020-11-28 07:31:12,205 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,205 INFO L274 CegarLoopResult]: For program point L49(lines 49 53) no Hoare annotation was computed. [2020-11-28 07:31:12,205 INFO L274 CegarLoopResult]: For program point L66(lines 66 68) no Hoare annotation was computed. [2020-11-28 07:31:12,205 INFO L274 CegarLoopResult]: For program point L33(lines 33 37) no Hoare annotation was computed. [2020-11-28 07:31:12,206 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:31:12,206 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-28 07:31:12,206 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2020-11-28 07:31:12,206 INFO L274 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2020-11-28 07:31:12,206 INFO L274 CegarLoopResult]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2020-11-28 07:31:12,207 INFO L270 CegarLoopResult]: At program point L18-8(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= (+ ULTIMATE.start_main_~t~0 1) ULTIMATE.start_main_~tagbuf_len~0) (<= 0 ULTIMATE.start_main_~t~0)) [2020-11-28 07:31:12,207 INFO L274 CegarLoopResult]: For program point L18-9(lines 18 20) no Hoare annotation was computed. [2020-11-28 07:31:12,207 INFO L270 CegarLoopResult]: At program point L18-11(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~t~0 1) ULTIMATE.start_main_~tagbuf_len~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~t~0)) [2020-11-28 07:31:12,207 INFO L274 CegarLoopResult]: For program point L18-12(lines 18 20) no Hoare annotation was computed. [2020-11-28 07:31:12,207 INFO L270 CegarLoopResult]: At program point L18-14(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= (+ ULTIMATE.start_main_~t~0 1) ULTIMATE.start_main_~tagbuf_len~0) (<= 0 ULTIMATE.start_main_~t~0)) [2020-11-28 07:31:12,208 INFO L274 CegarLoopResult]: For program point L18-15(lines 18 20) no Hoare annotation was computed. [2020-11-28 07:31:12,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:31:12 BoogieIcfgContainer [2020-11-28 07:31:12,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:31:12,245 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:31:12,245 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:31:12,245 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:31:12,246 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:31:06" (3/4) ... [2020-11-28 07:31:12,249 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:31:12,269 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2020-11-28 07:31:12,269 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:31:12,270 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:31:12,271 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:31:12,370 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ec9a6846-7103-46f6-b228-5ddd51e896d4/bin/utaipan/witness.graphml [2020-11-28 07:31:12,370 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:31:12,371 INFO L168 Benchmark]: Toolchain (without parser) took 6652.57 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 71.9 MB in the beginning and 52.1 MB in the end (delta: 19.8 MB). Peak memory consumption was 39.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:31:12,371 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 73.4 MB. Free memory is still 46.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:31:12,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.39 ms. Allocated memory is still 92.3 MB. Free memory was 71.6 MB in the beginning and 61.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:31:12,372 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.29 ms. Allocated memory is still 92.3 MB. Free memory was 61.6 MB in the beginning and 59.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:31:12,372 INFO L168 Benchmark]: Boogie Preprocessor took 30.24 ms. Allocated memory is still 92.3 MB. Free memory was 59.6 MB in the beginning and 58.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:31:12,373 INFO L168 Benchmark]: RCFGBuilder took 727.10 ms. Allocated memory is still 92.3 MB. Free memory was 58.1 MB in the beginning and 63.2 MB in the end (delta: -5.2 MB). Peak memory consumption was 31.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:31:12,373 INFO L168 Benchmark]: TraceAbstraction took 5470.38 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 62.8 MB in the beginning and 57.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 49.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:31:12,373 INFO L168 Benchmark]: Witness Printer took 125.02 ms. Allocated memory is still 113.2 MB. Free memory was 57.4 MB in the beginning and 52.1 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:31:12,376 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 73.4 MB. Free memory is still 46.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 247.39 ms. Allocated memory is still 92.3 MB. Free memory was 71.6 MB in the beginning and 61.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.29 ms. Allocated memory is still 92.3 MB. Free memory was 61.6 MB in the beginning and 59.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.24 ms. Allocated memory is still 92.3 MB. Free memory was 59.6 MB in the beginning and 58.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 727.10 ms. Allocated memory is still 92.3 MB. Free memory was 58.1 MB in the beginning and 63.2 MB in the end (delta: -5.2 MB). Peak memory consumption was 31.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5470.38 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 62.8 MB in the beginning and 57.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 49.8 MB. Max. memory is 16.1 GB. * Witness Printer took 125.02 ms. Allocated memory is still 113.2 MB. Free memory was 57.4 MB in the beginning and 52.1 MB in the end (delta: 5.2 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 - 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 16 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!(0 == cond) && 0 <= t) && t <= tagbuf_len - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!(0 == cond) && t + 1 <= tagbuf_len) && 0 <= t - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (t + 1 <= tagbuf_len && 1 <= cond) && 0 <= t - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!(0 == cond) && 0 <= t) && t <= tagbuf_len - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!(0 == cond) && 0 <= t) && t <= tagbuf_len - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (t == 0 && t <= tagbuf_len) || ((1 <= cond && 0 <= t) && t <= tagbuf_len) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (t + 1 <= tagbuf_len && 1 <= cond) && 0 <= t - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!(0 == cond) && t + 1 <= tagbuf_len) && 0 <= t - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (t + 1 <= tagbuf_len && 1 <= cond) && 0 <= t - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (t + 1 <= tagbuf_len && 1 <= cond) && 0 <= t - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!(0 == cond) && t + 1 <= tagbuf_len) && 0 <= t - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!(0 == cond) && t + 1 <= tagbuf_len) && 0 <= t - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: (1 <= cond && 0 <= t) && t <= tagbuf_len - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!(0 == cond) && t + 1 <= tagbuf_len) && 0 <= t - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 108 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 204 SDtfs, 230 SDslu, 167 SDs, 0 SdLazy, 266 SolverSat, 177 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 15 PreInvPairs, 47 NumberOfFragments, 175 HoareAnnotationTreeSize, 15 FomulaSimplifications, 362 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 167 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 5354 SizeOfPredicates, 5 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 2/18 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...