./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark26_linear.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_0a22a68f-fb1e-4d23-b258-a88bd5209d44/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0a22a68f-fb1e-4d23-b258-a88bd5209d44/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0a22a68f-fb1e-4d23-b258-a88bd5209d44/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0a22a68f-fb1e-4d23-b258-a88bd5209d44/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark26_linear.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0a22a68f-fb1e-4d23-b258-a88bd5209d44/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0a22a68f-fb1e-4d23-b258-a88bd5209d44/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 7a6eaea59c0b35225373a459ea8360d703e45820 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:02:52,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:02:52,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:02:52,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:02:52,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:02:52,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:02:52,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:02:52,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:02:52,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:02:52,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:02:52,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:02:52,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:02:52,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:02:52,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:02:52,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:02:52,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:02:52,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:02:52,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:02:52,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:02:52,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:02:52,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:02:52,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:02:52,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:02:52,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:02:52,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:02:52,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:02:52,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:02:52,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:02:52,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:02:52,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:02:52,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:02:52,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:02:52,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:02:52,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:02:52,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:02:52,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:02:52,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:02:52,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:02:52,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:02:52,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:02:52,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:02:52,147 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0a22a68f-fb1e-4d23-b258-a88bd5209d44/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:02:52,184 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:02:52,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:02:52,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:02:52,185 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:02:52,185 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:02:52,185 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:02:52,185 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:02:52,186 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:02:52,186 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:02:52,186 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:02:52,186 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:02:52,186 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:02:52,186 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:02:52,187 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:02:52,187 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:02:52,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:02:52,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:02:52,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:02:52,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:02:52,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:02:52,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:02:52,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:02:52,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:02:52,189 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:02:52,189 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:02:52,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:02:52,189 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:02:52,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:02:52,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:02:52,190 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:02:52,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:02:52,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:02:52,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:02:52,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:02:52,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:02:52,192 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:02:52,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:02:52,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:02:52,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:02:52,193 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:02:52,193 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_0a22a68f-fb1e-4d23-b258-a88bd5209d44/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0a22a68f-fb1e-4d23-b258-a88bd5209d44/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a6eaea59c0b35225373a459ea8360d703e45820 [2020-11-22 13:02:52,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:02:52,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:02:52,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:02:52,517 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:02:52,518 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:02:52,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0a22a68f-fb1e-4d23-b258-a88bd5209d44/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark26_linear.i [2020-11-22 13:02:52,589 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0a22a68f-fb1e-4d23-b258-a88bd5209d44/bin/utaipan/data/3a7769133/0c1c34f8d5164860b0870ffb1093ef12/FLAG2c6bb1125 [2020-11-22 13:02:53,058 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:02:53,058 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0a22a68f-fb1e-4d23-b258-a88bd5209d44/sv-benchmarks/c/loop-zilu/benchmark26_linear.i [2020-11-22 13:02:53,063 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0a22a68f-fb1e-4d23-b258-a88bd5209d44/bin/utaipan/data/3a7769133/0c1c34f8d5164860b0870ffb1093ef12/FLAG2c6bb1125 [2020-11-22 13:02:53,422 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0a22a68f-fb1e-4d23-b258-a88bd5209d44/bin/utaipan/data/3a7769133/0c1c34f8d5164860b0870ffb1093ef12 [2020-11-22 13:02:53,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:02:53,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:02:53,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:02:53,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:02:53,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:02:53,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:02:53" (1/1) ... [2020-11-22 13:02:53,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ddf846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:53, skipping insertion in model container [2020-11-22 13:02:53,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:02:53" (1/1) ... [2020-11-22 13:02:53,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:02:53,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:02:53,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:02:53,633 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:02:53,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:02:53,661 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:02:53,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:53 WrapperNode [2020-11-22 13:02:53,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:02:53,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:02:53,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:02:53,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:02:53,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:53" (1/1) ... [2020-11-22 13:02:53,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:53" (1/1) ... [2020-11-22 13:02:53,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:02:53,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:02:53,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:02:53,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:02:53,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:53" (1/1) ... [2020-11-22 13:02:53,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:53" (1/1) ... [2020-11-22 13:02:53,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:53" (1/1) ... [2020-11-22 13:02:53,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:53" (1/1) ... [2020-11-22 13:02:53,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:53" (1/1) ... [2020-11-22 13:02:53,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:53" (1/1) ... [2020-11-22 13:02:53,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:53" (1/1) ... [2020-11-22 13:02:53,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:02:53,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:02:53,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:02:53,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:02:53,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a22a68f-fb1e-4d23-b258-a88bd5209d44/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 [2020-11-22 13:02:53,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:02:53,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:02:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:02:53,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:02:54,120 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:02:54,120 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:02:54,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:02:54 BoogieIcfgContainer [2020-11-22 13:02:54,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:02:54,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:02:54,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:02:54,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:02:54,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:02:53" (1/3) ... [2020-11-22 13:02:54,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af0b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:02:54, skipping insertion in model container [2020-11-22 13:02:54,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:53" (2/3) ... [2020-11-22 13:02:54,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af0b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:02:54, skipping insertion in model container [2020-11-22 13:02:54,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:02:54" (3/3) ... [2020-11-22 13:02:54,130 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark26_linear.i [2020-11-22 13:02:54,140 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:02:54,145 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:02:54,168 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:02:54,207 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:02:54,209 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:02:54,209 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:02:54,209 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:02:54,209 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:02:54,209 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:02:54,210 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:02:54,210 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:02:54,227 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-22 13:02:54,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:02:54,232 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:02:54,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:02:54,233 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:02:54,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:02:54,242 INFO L82 PathProgramCache]: Analyzing trace with hash 2011779439, now seen corresponding path program 1 times [2020-11-22 13:02:54,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:02:54,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098163063] [2020-11-22 13:02:54,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:02:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:02:54,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:02:54,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098163063] [2020-11-22 13:02:54,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:02:54,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:02:54,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86320919] [2020-11-22 13:02:54,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:02:54,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:02:54,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:02:54,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:02:54,484 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-11-22 13:02:54,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:02:54,542 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2020-11-22 13:02:54,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:02:54,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-22 13:02:54,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:02:54,560 INFO L225 Difference]: With dead ends: 18 [2020-11-22 13:02:54,563 INFO L226 Difference]: Without dead ends: 8 [2020-11-22 13:02:54,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:02:54,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-22 13:02:54,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-22 13:02:54,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-22 13:02:54,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-22 13:02:54,601 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-11-22 13:02:54,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:02:54,602 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-22 13:02:54,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:02:54,610 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-22 13:02:54,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:02:54,610 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:02:54,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:02:54,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:02:54,611 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:02:54,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:02:54,618 INFO L82 PathProgramCache]: Analyzing trace with hash -2082797155, now seen corresponding path program 1 times [2020-11-22 13:02:54,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:02:54,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068904526] [2020-11-22 13:02:54,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:02:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:02:54,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:02:54,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068904526] [2020-11-22 13:02:54,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018431467] [2020-11-22 13:02:54,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a22a68f-fb1e-4d23-b258-a88bd5209d44/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 [2020-11-22 13:02:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:02:54,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-22 13:02:54,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:02:54,918 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:02:54,923 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-22 13:02:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:02:54,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:02:54,971 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:02:55,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:02:55,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2026982035] [2020-11-22 13:02:55,020 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-22 13:02:55,021 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:02:55,024 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:02:55,029 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:02:55,030 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:02:55,432 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:02:55,639 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-22 13:02:56,156 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2020-11-22 13:02:56,427 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2020-11-22 13:02:56,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-22 13:02:56,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5] total 9 [2020-11-22 13:02:56,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787019565] [2020-11-22 13:02:56,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:02:56,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:02:56,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:02:56,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-22 13:02:56,432 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2020-11-22 13:02:56,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:02:56,455 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2020-11-22 13:02:56,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:02:56,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-22 13:02:56,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:02:56,458 INFO L225 Difference]: With dead ends: 8 [2020-11-22 13:02:56,458 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:02:56,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-22 13:02:56,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:02:56,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:02:56,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:02:56,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:02:56,460 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-11-22 13:02:56,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:02:56,460 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:02:56,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:02:56,461 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:02:56,461 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:02:56,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-22 13:02:56,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:02:56,837 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-11-22 13:02:56,841 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:02:56,841 INFO L277 CegarLoopResult]: At program point L27(lines 19 28) the Hoare annotation is: true [2020-11-22 13:02:56,842 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 25) the Hoare annotation is: (and (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648)) (let ((.cse15 (select |#memory_int| |#t~string0.base|))) (let ((.cse0 (= |#t~string1.offset| 0)) (.cse1 (= |#NULL.base| 0)) (.cse2 (= (select .cse15 |#t~string0.offset|) 48)) (.cse3 (= (select .cse15 (+ |#t~string0.offset| 1)) 0)) (.cse4 (= (select |#valid| 0) 0)) (.cse5 (= 2 (select |#length| |#t~string0.base|))) (.cse6 (<= ULTIMATE.start_main_~y~0 2147483647)) (.cse7 (= (select |#length| |#t~string1.base|) 21)) (.cse8 (< |#StackHeapBarrier| |#t~string0.base|)) (.cse9 (= (select |#valid| |#t~string0.base|) 1)) (.cse10 (< 0 |#StackHeapBarrier|)) (.cse11 (< |#StackHeapBarrier| |#t~string1.base|)) (.cse12 (= |#NULL.offset| 0)) (.cse13 (= (select |#valid| |#t~string1.base|) 1)) (.cse14 (= |#t~string0.offset| 0))) (or (and .cse0 .cse1 (<= 0 (+ ULTIMATE.start_main_~x~0 2147483647)) .cse2 .cse3 .cse4 (< ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~y~0 1)) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)))))) [2020-11-22 13:02:56,842 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-22 13:02:56,842 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-22 13:02:56,842 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-11-22 13:02:56,842 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:02:56,842 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-11-22 13:02:56,843 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-11-22 13:02:56,843 INFO L274 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-11-22 13:02:56,859 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:02:56,860 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:02:56,861 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:02:56,861 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:02:56,861 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:02:56,862 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:56,862 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:56,862 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:56,862 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:02:56,863 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:02:56,863 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:02:56,863 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:02:56,864 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:02:56,864 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:02:56,864 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:56,864 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:56,865 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:56,865 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:02:56,879 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:02:56,879 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:02:56,880 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:02:56,880 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:02:56,880 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:02:56,881 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:56,882 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:56,882 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:56,882 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:02:56,883 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:02:56,883 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:02:56,883 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:02:56,884 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:02:56,884 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:02:56,884 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:56,885 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:56,885 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:56,885 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:02:56,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:02:56 BoogieIcfgContainer [2020-11-22 13:02:56,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:02:56,897 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:02:56,897 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:02:56,897 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:02:56,898 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:02:54" (3/4) ... [2020-11-22 13:02:56,904 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:02:56,912 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 13:02:56,912 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-22 13:02:56,913 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:02:56,913 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:02:56,959 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0a22a68f-fb1e-4d23-b258-a88bd5209d44/bin/utaipan/witness.graphml [2020-11-22 13:02:56,960 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:02:56,961 INFO L168 Benchmark]: Toolchain (without parser) took 3534.99 ms. Allocated memory was 107.0 MB in the beginning and 136.3 MB in the end (delta: 29.4 MB). Free memory was 78.8 MB in the beginning and 84.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:56,964 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 77.6 MB. Free memory is still 34.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:02:56,966 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.19 ms. Allocated memory is still 107.0 MB. Free memory was 78.6 MB in the beginning and 84.1 MB in the end (delta: -5.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:56,967 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.60 ms. Allocated memory is still 107.0 MB. Free memory was 84.1 MB in the beginning and 82.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:56,968 INFO L168 Benchmark]: Boogie Preprocessor took 42.33 ms. Allocated memory is still 107.0 MB. Free memory was 82.5 MB in the beginning and 81.7 MB in the end (delta: 863.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:02:56,971 INFO L168 Benchmark]: RCFGBuilder took 364.23 ms. Allocated memory is still 107.0 MB. Free memory was 81.7 MB in the beginning and 68.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:56,973 INFO L168 Benchmark]: TraceAbstraction took 2772.21 ms. Allocated memory was 107.0 MB in the beginning and 136.3 MB in the end (delta: 29.4 MB). Free memory was 68.3 MB in the beginning and 86.9 MB in the end (delta: -18.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:56,973 INFO L168 Benchmark]: Witness Printer took 63.24 ms. Allocated memory is still 136.3 MB. Free memory was 86.9 MB in the beginning and 84.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:56,978 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 77.6 MB. Free memory is still 34.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 234.19 ms. Allocated memory is still 107.0 MB. Free memory was 78.6 MB in the beginning and 84.1 MB in the end (delta: -5.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.60 ms. Allocated memory is still 107.0 MB. Free memory was 84.1 MB in the beginning and 82.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.33 ms. Allocated memory is still 107.0 MB. Free memory was 82.5 MB in the beginning and 81.7 MB in the end (delta: 863.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 364.23 ms. Allocated memory is still 107.0 MB. Free memory was 81.7 MB in the beginning and 68.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2772.21 ms. Allocated memory was 107.0 MB in the beginning and 136.3 MB in the end (delta: 29.4 MB). Free memory was 68.3 MB in the beginning and 86.9 MB in the end (delta: -18.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * Witness Printer took 63.24 ms. Allocated memory is still 136.3 MB. Free memory was 86.9 MB in the beginning and 84.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant [2020-11-22 13:02:56,996 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:02:56,996 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:02:56,996 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:02:56,997 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:02:56,997 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:02:56,997 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:56,997 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:56,998 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:56,998 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:02:56,998 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:02:56,998 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:02:56,999 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:02:56,999 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:02:56,999 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:02:56,999 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:57,003 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:57,003 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:57,003 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:02:57,012 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:02:57,015 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:02:57,015 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:02:57,015 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:02:57,016 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:02:57,016 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:57,016 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:57,016 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:57,017 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:02:57,017 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-22 13:02:57,017 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:02:57,017 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:02:57,018 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:02:57,018 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-22 13:02:57,018 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:57,018 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:57,019 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-22 13:02:57,019 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL Derived loop invariant: 0 <= x + 2147483648 && ((((((((((((((((("benchmark26_linear.c" == 0 && #NULL == 0) && 0 <= x + 2147483647) && unknown-#memory_int-unknown["0"]["0"] == 48) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && x < y + 1) && 2 == unknown-#length-unknown["0"]) && y <= 2147483647) && unknown-#length-unknown["benchmark26_linear.c"] == 21) && unknown-#StackHeapBarrier-unknown < "0") && \valid["0"] == 1) && 0 < unknown-#StackHeapBarrier-unknown) && unknown-#StackHeapBarrier-unknown < "benchmark26_linear.c") && #NULL == 0) && \valid["benchmark26_linear.c"] == 1) && "0" == 0) || ((((((((((((((("benchmark26_linear.c" == 0 && #NULL == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && 2 == unknown-#length-unknown["0"]) && y <= 2147483647) && unknown-#length-unknown["benchmark26_linear.c"] == 21) && unknown-#StackHeapBarrier-unknown < "0") && \valid["0"] == 1) && 0 < unknown-#StackHeapBarrier-unknown) && unknown-#StackHeapBarrier-unknown < "benchmark26_linear.c") && #NULL == 0) && \valid["benchmark26_linear.c"] == 1) && "0" == 0) && x < y)) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 3 SDslu, 6 SDs, 0 SdLazy, 11 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 153 HoareAnnotationTreeSize, 2 FomulaSimplifications, 156 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 329 SizeOfPredicates, 6 NumberOfNonLiveVariables, 42 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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: OVERALL_TIME[ms]: 412, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 5, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 6, TOOLS_POST_TIME[ms]: 204, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 6, TOOLS_QUANTIFIERELIM_TIME[ms]: 200, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 175, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 16, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 138, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 10, DOMAIN_ISBOTTOM_APPLICATIONS: 5, DOMAIN_ISBOTTOM_TIME[ms]: 16, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 178, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 178, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 7, DAG_COMPRESSION_PROCESSED_NODES: 41, DAG_COMPRESSION_RETAINED_NODES: 20, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...