./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ebeb71b6-c96e-4bcf-bc26-1bcf288ecccb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ebeb71b6-c96e-4bcf-bc26-1bcf288ecccb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ebeb71b6-c96e-4bcf-bc26-1bcf288ecccb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ebeb71b6-c96e-4bcf-bc26-1bcf288ecccb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ebeb71b6-c96e-4bcf-bc26-1bcf288ecccb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ebeb71b6-c96e-4bcf-bc26-1bcf288ecccb/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 fe54aa6cbf5093caec91497905a5a8a5f126c540 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:40:40,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:40,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:40,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:40,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:40,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:40,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:40,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:40,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:40,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:40,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:40,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:40,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:40,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:40,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:40,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:40,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:40,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:40,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:40,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:40,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:40,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:40,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:40,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:40,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:40,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:40,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:40,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:40,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:40,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:40,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:40,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:40,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:40,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:40,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:40,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:40,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:40,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:40,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:40,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:40,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:40,325 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ebeb71b6-c96e-4bcf-bc26-1bcf288ecccb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:40:40,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:40,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:40,376 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:40,376 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:40,376 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:40,377 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:40,377 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:40:40,377 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:40,377 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:40,377 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:40:40,378 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:40:40,379 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:40,379 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:40:40,379 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:40:40,379 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:40:40,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:40,380 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:40,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:40:40,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:40,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:40,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:40:40,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:40,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:40:40,382 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:40:40,382 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:40,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:40:40,382 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:40,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:40:40,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:40,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:40,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:40,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:40,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:40,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:40,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:40:40,384 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:40:40,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:40:40,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:40:40,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:40,385 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:40,385 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_ebeb71b6-c96e-4bcf-bc26-1bcf288ecccb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ebeb71b6-c96e-4bcf-bc26-1bcf288ecccb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe54aa6cbf5093caec91497905a5a8a5f126c540 [2020-11-28 07:40:40,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:40,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:40,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:40,697 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:40,699 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:40,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ebeb71b6-c96e-4bcf-bc26-1bcf288ecccb/bin/utaipan/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2020-11-28 07:40:40,768 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ebeb71b6-c96e-4bcf-bc26-1bcf288ecccb/bin/utaipan/data/f94496417/e2343edb84dc4c4ba8a691e644492602/FLAG1cf2c9286 [2020-11-28 07:40:41,242 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:41,243 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ebeb71b6-c96e-4bcf-bc26-1bcf288ecccb/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2020-11-28 07:40:41,249 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ebeb71b6-c96e-4bcf-bc26-1bcf288ecccb/bin/utaipan/data/f94496417/e2343edb84dc4c4ba8a691e644492602/FLAG1cf2c9286 [2020-11-28 07:40:41,634 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ebeb71b6-c96e-4bcf-bc26-1bcf288ecccb/bin/utaipan/data/f94496417/e2343edb84dc4c4ba8a691e644492602 [2020-11-28 07:40:41,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:41,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:41,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:41,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:41,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:41,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d71de14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41, skipping insertion in model container [2020-11-28 07:40:41,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:41,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:41,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:41,861 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:41,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:41,892 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:41,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41 WrapperNode [2020-11-28 07:40:41,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:41,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:41,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:41,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:41,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:41,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:40:41,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:40:41,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:40:41,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:40:41,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:40:41,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:40:41,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:40:41,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebeb71b6-c96e-4bcf-bc26-1bcf288ecccb/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 07:40:42,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:40:42,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:40:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:40:42,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:40:42,455 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:40:42,456 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-28 07:40:42,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:42 BoogieIcfgContainer [2020-11-28 07:40:42,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:40:42,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:40:42,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:40:42,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:40:42,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:41" (1/3) ... [2020-11-28 07:40:42,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f28733f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:42, skipping insertion in model container [2020-11-28 07:40:42,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (2/3) ... [2020-11-28 07:40:42,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f28733f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:42, skipping insertion in model container [2020-11-28 07:40:42,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:42" (3/3) ... [2020-11-28 07:40:42,467 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2020-11-28 07:40:42,478 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:40:42,483 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:40:42,496 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:40:42,520 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:40:42,521 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:40:42,521 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:40:42,521 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:40:42,521 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:40:42,521 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:40:42,521 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:40:42,522 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:40:42,533 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-28 07:40:42,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:40:42,538 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:42,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:40:42,539 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:42,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:42,545 INFO L82 PathProgramCache]: Analyzing trace with hash 4122263, now seen corresponding path program 1 times [2020-11-28 07:40:42,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:42,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293210438] [2020-11-28 07:40:42,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:42,700 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 07:40:42,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293210438] [2020-11-28 07:40:42,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:42,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:40:42,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689508941] [2020-11-28 07:40:42,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:42,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:42,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:42,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:42,734 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-11-28 07:40:42,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:42,823 INFO L93 Difference]: Finished difference Result 44 states and 71 transitions. [2020-11-28 07:40:42,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:42,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-28 07:40:42,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:42,833 INFO L225 Difference]: With dead ends: 44 [2020-11-28 07:40:42,833 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 07:40:42,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:42,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 07:40:42,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-28 07:40:42,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 07:40:42,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-11-28 07:40:42,906 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 4 [2020-11-28 07:40:42,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:42,907 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-11-28 07:40:42,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:42,907 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-11-28 07:40:42,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:40:42,908 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:42,908 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-11-28 07:40:42,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:40:42,909 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:42,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:42,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1745349957, now seen corresponding path program 1 times [2020-11-28 07:40:42,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:42,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618249750] [2020-11-28 07:40:42,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:42,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:42,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618249750] [2020-11-28 07:40:42,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723044599] [2020-11-28 07:40:42,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebeb71b6-c96e-4bcf-bc26-1bcf288ecccb/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 07:40:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:43,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:40:43,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:43,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:43,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:43,075 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-28 07:40:43,075 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:40:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:40:43,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-28 07:40:43,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 3] total 4 [2020-11-28 07:40:43,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099057251] [2020-11-28 07:40:43,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:43,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:43,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:43,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:43,092 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 3 states. [2020-11-28 07:40:43,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:43,133 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2020-11-28 07:40:43,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:43,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-28 07:40:43,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:43,135 INFO L225 Difference]: With dead ends: 39 [2020-11-28 07:40:43,135 INFO L226 Difference]: Without dead ends: 37 [2020-11-28 07:40:43,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:43,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-28 07:40:43,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-11-28 07:40:43,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 07:40:43,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 49 transitions. [2020-11-28 07:40:43,144 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 49 transitions. Word has length 7 [2020-11-28 07:40:43,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:43,144 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 49 transitions. [2020-11-28 07:40:43,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:43,144 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 49 transitions. [2020-11-28 07:40:43,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:40:43,145 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:43,145 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:43,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:40:43,346 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:43,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:43,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1028718455, now seen corresponding path program 1 times [2020-11-28 07:40:43,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:43,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992140044] [2020-11-28 07:40:43,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:43,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992140044] [2020-11-28 07:40:43,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298860056] [2020-11-28 07:40:43,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebeb71b6-c96e-4bcf-bc26-1bcf288ecccb/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:43,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:40:43,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:43,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:43,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:43,512 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-28 07:40:43,515 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:40:43,534 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-28 07:40:43,537 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:40:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:40:43,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-28 07:40:43,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4] total 6 [2020-11-28 07:40:43,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105420807] [2020-11-28 07:40:43,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:43,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:43,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:43,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:43,552 INFO L87 Difference]: Start difference. First operand 35 states and 49 transitions. Second operand 3 states. [2020-11-28 07:40:43,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:43,617 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2020-11-28 07:40:43,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:43,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-28 07:40:43,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:43,620 INFO L225 Difference]: With dead ends: 49 [2020-11-28 07:40:43,620 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 07:40:43,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:43,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 07:40:43,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-11-28 07:40:43,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 07:40:43,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2020-11-28 07:40:43,641 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 13 [2020-11-28 07:40:43,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:43,642 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2020-11-28 07:40:43,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:43,642 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2020-11-28 07:40:43,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:40:43,645 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:43,645 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:43,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:43,870 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:43,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:43,870 INFO L82 PathProgramCache]: Analyzing trace with hash 754203884, now seen corresponding path program 1 times [2020-11-28 07:40:43,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:43,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694173304] [2020-11-28 07:40:43,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:43,925 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:40:43,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694173304] [2020-11-28 07:40:43,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:43,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:40:43,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411905950] [2020-11-28 07:40:43,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:43,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:43,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:43,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:43,928 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand 3 states. [2020-11-28 07:40:44,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:44,016 INFO L93 Difference]: Finished difference Result 101 states and 145 transitions. [2020-11-28 07:40:44,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:44,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-28 07:40:44,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:44,022 INFO L225 Difference]: With dead ends: 101 [2020-11-28 07:40:44,022 INFO L226 Difference]: Without dead ends: 39 [2020-11-28 07:40:44,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:44,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-28 07:40:44,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2020-11-28 07:40:44,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 07:40:44,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2020-11-28 07:40:44,035 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 15 [2020-11-28 07:40:44,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:44,035 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2020-11-28 07:40:44,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:44,036 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2020-11-28 07:40:44,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 07:40:44,037 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:44,037 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:44,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:40:44,038 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:44,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:44,038 INFO L82 PathProgramCache]: Analyzing trace with hash 186056936, now seen corresponding path program 1 times [2020-11-28 07:40:44,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:44,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129132327] [2020-11-28 07:40:44,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:44,143 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:44,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129132327] [2020-11-28 07:40:44,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405349643] [2020-11-28 07:40:44,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebeb71b6-c96e-4bcf-bc26-1bcf288ecccb/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:44,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:40:44,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:44,203 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:40:44,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:44,225 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:40:44,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:40:44,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2020-11-28 07:40:44,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608765578] [2020-11-28 07:40:44,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:44,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:44,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:44,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:44,228 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand 4 states. [2020-11-28 07:40:44,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:44,290 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2020-11-28 07:40:44,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:44,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-28 07:40:44,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:44,292 INFO L225 Difference]: With dead ends: 69 [2020-11-28 07:40:44,292 INFO L226 Difference]: Without dead ends: 45 [2020-11-28 07:40:44,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:44,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-28 07:40:44,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-28 07:40:44,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 07:40:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-11-28 07:40:44,303 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 21 [2020-11-28 07:40:44,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:44,303 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-11-28 07:40:44,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:44,303 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-11-28 07:40:44,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 07:40:44,305 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:44,305 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:44,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:44,534 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:44,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:44,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1852846827, now seen corresponding path program 1 times [2020-11-28 07:40:44,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:44,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248357848] [2020-11-28 07:40:44,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:44,606 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-28 07:40:44,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248357848] [2020-11-28 07:40:44,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981507079] [2020-11-28 07:40:44,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebeb71b6-c96e-4bcf-bc26-1bcf288ecccb/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:44,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:40:44,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:40:44,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:44,679 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:40:44,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:40:44,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-28 07:40:44,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408332405] [2020-11-28 07:40:44,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:44,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:44,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:44,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:44,683 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 3 states. [2020-11-28 07:40:44,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:44,703 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2020-11-28 07:40:44,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:44,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-28 07:40:44,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:44,706 INFO L225 Difference]: With dead ends: 69 [2020-11-28 07:40:44,706 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:40:44,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:44,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:40:44,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:40:44,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:40:44,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:40:44,709 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-11-28 07:40:44,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:44,709 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:40:44,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:44,709 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:40:44,710 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:40:44,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:44,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:40:45,180 INFO L274 CegarLoopResult]: For program point L97(lines 97 99) no Hoare annotation was computed. [2020-11-28 07:40:45,181 INFO L270 CegarLoopResult]: At program point L31(lines 31 126) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2020-11-28 07:40:45,181 INFO L270 CegarLoopResult]: At program point L98(lines 10 142) the Hoare annotation is: false [2020-11-28 07:40:45,181 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:40:45,182 INFO L274 CegarLoopResult]: For program point L94-1(lines 55 108) no Hoare annotation was computed. [2020-11-28 07:40:45,182 INFO L274 CegarLoopResult]: For program point L90-1(lines 55 108) no Hoare annotation was computed. [2020-11-28 07:40:45,182 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 07:40:45,182 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-11-28 07:40:45,182 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:40:45,184 INFO L274 CegarLoopResult]: For program point L79-1(lines 55 108) no Hoare annotation was computed. [2020-11-28 07:40:45,184 INFO L277 CegarLoopResult]: At program point L141(lines 10 142) the Hoare annotation is: true [2020-11-28 07:40:45,185 INFO L270 CegarLoopResult]: At program point L26(lines 26 129) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2020-11-28 07:40:45,185 INFO L270 CegarLoopResult]: At program point L51(lines 51 110) the Hoare annotation is: (or (< ULTIMATE.start_main_~blastFlag~0 5) (and (<= 8640 ULTIMATE.start_main_~s__state~0) (<= ULTIMATE.start_main_~s__state~0 8640))) [2020-11-28 07:40:45,187 INFO L270 CegarLoopResult]: At program point L47(lines 47 112) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2020-11-28 07:40:45,187 INFO L277 CegarLoopResult]: At program point L138(lines 10 142) the Hoare annotation is: true [2020-11-28 07:40:45,187 INFO L270 CegarLoopResult]: At program point L101(lines 19 136) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2020-11-28 07:40:45,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:40:45 BoogieIcfgContainer [2020-11-28 07:40:45,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:40:45,223 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:40:45,223 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:40:45,223 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:40:45,224 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:42" (3/4) ... [2020-11-28 07:40:45,227 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:40:45,241 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 07:40:45,241 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:40:45,242 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:40:45,242 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:40:45,307 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ebeb71b6-c96e-4bcf-bc26-1bcf288ecccb/bin/utaipan/witness.graphml [2020-11-28 07:40:45,307 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:40:45,309 INFO L168 Benchmark]: Toolchain (without parser) took 3670.43 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 93.2 MB in the beginning and 116.6 MB in the end (delta: -23.4 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:45,311 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory was 41.3 MB in the beginning and 41.2 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:45,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.83 ms. Allocated memory is still 123.7 MB. Free memory was 93.0 MB in the beginning and 98.9 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:45,316 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.12 ms. Allocated memory is still 123.7 MB. Free memory was 98.9 MB in the beginning and 97.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:45,317 INFO L168 Benchmark]: Boogie Preprocessor took 22.48 ms. Allocated memory is still 123.7 MB. Free memory was 97.6 MB in the beginning and 96.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:45,317 INFO L168 Benchmark]: RCFGBuilder took 508.36 ms. Allocated memory is still 123.7 MB. Free memory was 96.4 MB in the beginning and 76.1 MB in the end (delta: 20.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:45,318 INFO L168 Benchmark]: TraceAbstraction took 2762.09 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 75.7 MB in the beginning and 119.7 MB in the end (delta: -44.0 MB). Peak memory consumption was 38.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:45,318 INFO L168 Benchmark]: Witness Printer took 84.82 ms. Allocated memory is still 148.9 MB. Free memory was 119.7 MB in the beginning and 116.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:45,321 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory was 41.3 MB in the beginning and 41.2 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 253.83 ms. Allocated memory is still 123.7 MB. Free memory was 93.0 MB in the beginning and 98.9 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.12 ms. Allocated memory is still 123.7 MB. Free memory was 98.9 MB in the beginning and 97.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.48 ms. Allocated memory is still 123.7 MB. Free memory was 97.6 MB in the beginning and 96.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 508.36 ms. Allocated memory is still 123.7 MB. Free memory was 96.4 MB in the beginning and 76.1 MB in the end (delta: 20.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2762.09 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 75.7 MB in the beginning and 119.7 MB in the end (delta: -44.0 MB). Peak memory consumption was 38.0 MB. Max. memory is 16.1 GB. * Witness Printer took 84.82 ms. Allocated memory is still 148.9 MB. Free memory was 119.7 MB in the beginning and 116.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (blastFlag <= 2 || ((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640)) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: blastFlag < 5 || (8640 <= s__state && s__state <= 8640) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 94 SDtfs, 34 SDslu, 53 SDs, 0 SdLazy, 82 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 48 NumberOfFragments, 102 HoareAnnotationTreeSize, 8 FomulaSimplifications, 396 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 209 ConstructedInterpolants, 0 QuantifiedInterpolants, 7349 SizeOfPredicates, 3 NumberOfNonLiveVariables, 253 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 123/139 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...