./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound20.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_5ea54a12-f867-4471-8004-89638b88996f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5ea54a12-f867-4471-8004-89638b88996f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5ea54a12-f867-4471-8004-89638b88996f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5ea54a12-f867-4471-8004-89638b88996f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5ea54a12-f867-4471-8004-89638b88996f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5ea54a12-f867-4471-8004-89638b88996f/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 fc25a9583bea8eba5f1bd463a5f55404bde18f6a ........................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:08:34,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:08:34,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:08:34,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:08:34,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:08:34,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:08:34,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:08:34,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:08:34,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:08:34,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:08:34,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:08:34,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:08:34,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:08:34,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:08:34,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:08:34,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:08:34,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:08:34,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:08:34,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:08:34,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:08:34,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:08:34,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:08:34,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:08:34,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:08:34,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:08:34,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:08:34,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:08:34,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:08:34,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:08:34,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:08:34,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:08:34,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:08:34,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:08:34,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:08:34,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:08:34,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:08:34,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:08:34,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:08:34,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:08:34,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:08:34,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:08:34,425 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5ea54a12-f867-4471-8004-89638b88996f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:08:34,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:08:34,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:08:34,460 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:08:34,460 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:08:34,461 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:08:34,461 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:08:34,461 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:08:34,462 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:08:34,462 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:08:34,462 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:08:34,462 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:08:34,463 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:08:34,463 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:08:34,463 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:08:34,464 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:08:34,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:08:34,465 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:08:34,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:08:34,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:08:34,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:08:34,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:08:34,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:08:34,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:08:34,467 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:08:34,468 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:08:34,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:08:34,468 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:08:34,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:08:34,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:08:34,469 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:08:34,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:08:34,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:08:34,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:08:34,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:08:34,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:08:34,471 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:08:34,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:08:34,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:08:34,472 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:08:34,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:08:34,473 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_5ea54a12-f867-4471-8004-89638b88996f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5ea54a12-f867-4471-8004-89638b88996f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc25a9583bea8eba5f1bd463a5f55404bde18f6a [2020-11-30 02:08:34,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:08:34,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:08:34,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:08:34,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:08:34,844 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:08:34,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5ea54a12-f867-4471-8004-89638b88996f/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound20.c [2020-11-30 02:08:34,940 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ea54a12-f867-4471-8004-89638b88996f/bin/utaipan/data/718e0ecf2/f4aed4f4ef484da4b2bab969292ff99f/FLAG8dd772acd [2020-11-30 02:08:35,480 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:08:35,481 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5ea54a12-f867-4471-8004-89638b88996f/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound20.c [2020-11-30 02:08:35,489 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ea54a12-f867-4471-8004-89638b88996f/bin/utaipan/data/718e0ecf2/f4aed4f4ef484da4b2bab969292ff99f/FLAG8dd772acd [2020-11-30 02:08:35,835 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5ea54a12-f867-4471-8004-89638b88996f/bin/utaipan/data/718e0ecf2/f4aed4f4ef484da4b2bab969292ff99f [2020-11-30 02:08:35,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:08:35,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:08:35,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:08:35,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:08:35,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:08:35,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:08:35" (1/1) ... [2020-11-30 02:08:35,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ecf364c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:08:35, skipping insertion in model container [2020-11-30 02:08:35,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:08:35" (1/1) ... [2020-11-30 02:08:35,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:08:35,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:08:36,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:08:36,165 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:08:36,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:08:36,229 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:08:36,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:08:36 WrapperNode [2020-11-30 02:08:36,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:08:36,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:08:36,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:08:36,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:08:36,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:08:36" (1/1) ... [2020-11-30 02:08:36,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:08:36" (1/1) ... [2020-11-30 02:08:36,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:08:36,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:08:36,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:08:36,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:08:36,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:08:36" (1/1) ... [2020-11-30 02:08:36,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:08:36" (1/1) ... [2020-11-30 02:08:36,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:08:36" (1/1) ... [2020-11-30 02:08:36,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:08:36" (1/1) ... [2020-11-30 02:08:36,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:08:36" (1/1) ... [2020-11-30 02:08:36,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:08:36" (1/1) ... [2020-11-30 02:08:36,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:08:36" (1/1) ... [2020-11-30 02:08:36,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:08:36,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:08:36,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:08:36,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:08:36,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:08:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ea54a12-f867-4471-8004-89638b88996f/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 [2020-11-30 02:08:36,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:08:36,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:08:36,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:08:36,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:08:37,069 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:08:37,070 INFO L298 CfgBuilder]: Removed 37 assume(true) statements. [2020-11-30 02:08:37,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:08:37 BoogieIcfgContainer [2020-11-30 02:08:37,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:08:37,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:08:37,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:08:37,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:08:37,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:08:35" (1/3) ... [2020-11-30 02:08:37,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140c5bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:08:37, skipping insertion in model container [2020-11-30 02:08:37,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:08:36" (2/3) ... [2020-11-30 02:08:37,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140c5bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:08:37, skipping insertion in model container [2020-11-30 02:08:37,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:08:37" (3/3) ... [2020-11-30 02:08:37,084 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound20.c [2020-11-30 02:08:37,098 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:08:37,104 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-30 02:08:37,119 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-30 02:08:37,171 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:08:37,171 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:08:37,171 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:08:37,172 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:08:37,173 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:08:37,173 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:08:37,173 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:08:37,174 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:08:37,223 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-30 02:08:37,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:08:37,229 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:08:37,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:08:37,231 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:08:37,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:08:37,247 INFO L82 PathProgramCache]: Analyzing trace with hash 156726576, now seen corresponding path program 1 times [2020-11-30 02:08:37,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:08:37,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765142040] [2020-11-30 02:08:37,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:08:37,389 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:08:37,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [101477820] [2020-11-30 02:08:37,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ea54a12-f867-4471-8004-89638b88996f/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 [2020-11-30 02:08:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:08:37,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 02:08:37,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:08:37,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:08:37,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:08:37,612 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:08:37,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:08:37,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765142040] [2020-11-30 02:08:37,668 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:08:37,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101477820] [2020-11-30 02:08:37,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:08:37,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 02:08:37,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532519821] [2020-11-30 02:08:37,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:08:37,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:08:37,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:08:37,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:08:37,696 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-11-30 02:08:40,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:08:40,107 INFO L93 Difference]: Finished difference Result 121 states and 157 transitions. [2020-11-30 02:08:40,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:08:40,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-30 02:08:40,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:08:40,133 INFO L225 Difference]: With dead ends: 121 [2020-11-30 02:08:40,134 INFO L226 Difference]: Without dead ends: 83 [2020-11-30 02:08:40,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:08:40,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-30 02:08:40,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 53. [2020-11-30 02:08:40,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-30 02:08:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2020-11-30 02:08:40,188 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 5 [2020-11-30 02:08:40,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:08:40,188 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2020-11-30 02:08:40,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:08:40,189 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2020-11-30 02:08:40,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 02:08:40,190 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:08:40,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 02:08:40,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-30 02:08:40,409 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:08:40,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:08:40,410 INFO L82 PathProgramCache]: Analyzing trace with hash 563543714, now seen corresponding path program 1 times [2020-11-30 02:08:40,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:08:40,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273958331] [2020-11-30 02:08:40,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:08:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:08:40,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:08:40,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273958331] [2020-11-30 02:08:40,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:08:40,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:08:40,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699576003] [2020-11-30 02:08:40,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:08:40,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:08:40,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:08:40,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:08:40,552 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand 4 states. [2020-11-30 02:08:40,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:08:40,630 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-11-30 02:08:40,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:08:40,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-30 02:08:40,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:08:40,632 INFO L225 Difference]: With dead ends: 67 [2020-11-30 02:08:40,632 INFO L226 Difference]: Without dead ends: 53 [2020-11-30 02:08:40,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:08:40,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-30 02:08:40,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-11-30 02:08:40,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-30 02:08:40,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2020-11-30 02:08:40,646 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 6 [2020-11-30 02:08:40,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:08:40,647 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2020-11-30 02:08:40,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:08:40,647 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2020-11-30 02:08:40,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:08:40,648 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:08:40,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:08:40,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:08:40,649 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:08:40,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:08:40,650 INFO L82 PathProgramCache]: Analyzing trace with hash 290570963, now seen corresponding path program 1 times [2020-11-30 02:08:40,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:08:40,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565567814] [2020-11-30 02:08:40,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:08:40,673 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:08:40,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823866137] [2020-11-30 02:08:40,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ea54a12-f867-4471-8004-89638b88996f/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 [2020-11-30 02:08:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:08:40,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 02:08:40,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:08:40,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:08:40,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:08:40,804 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:08:40,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:08:40,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565567814] [2020-11-30 02:08:40,812 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:08:40,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823866137] [2020-11-30 02:08:40,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:08:40,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 3 [2020-11-30 02:08:40,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261110251] [2020-11-30 02:08:40,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:08:40,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:08:40,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:08:40,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:08:40,815 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 4 states. [2020-11-30 02:08:40,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:08:40,818 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2020-11-30 02:08:40,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:08:40,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 02:08:40,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:08:40,819 INFO L225 Difference]: With dead ends: 53 [2020-11-30 02:08:40,819 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:08:40,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:08:40,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:08:40,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:08:40,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:08:40,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:08:40,826 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-11-30 02:08:40,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:08:40,827 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:08:40,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:08:40,827 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:08:40,827 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:08:41,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:08:41,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:08:41,079 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:08:41,079 INFO L274 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-11-30 02:08:41,079 INFO L270 CegarLoopResult]: At program point L11-1(lines 10 16) the Hoare annotation is: false [2020-11-30 02:08:41,079 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 14) no Hoare annotation was computed. [2020-11-30 02:08:41,079 INFO L270 CegarLoopResult]: At program point L11-3(lines 10 16) the Hoare annotation is: false [2020-11-30 02:08:41,079 INFO L274 CegarLoopResult]: For program point L11-4(lines 11 14) no Hoare annotation was computed. [2020-11-30 02:08:41,080 INFO L270 CegarLoopResult]: At program point L11-5(lines 39 40) the Hoare annotation is: false [2020-11-30 02:08:41,080 INFO L274 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-11-30 02:08:41,080 INFO L270 CegarLoopResult]: At program point L11-7(lines 10 16) the Hoare annotation is: false [2020-11-30 02:08:41,080 INFO L274 CegarLoopResult]: For program point L11-8(lines 11 14) no Hoare annotation was computed. [2020-11-30 02:08:41,080 INFO L270 CegarLoopResult]: At program point L11-9(lines 10 16) the Hoare annotation is: false [2020-11-30 02:08:41,080 INFO L274 CegarLoopResult]: For program point L11-10(lines 11 14) no Hoare annotation was computed. [2020-11-30 02:08:41,080 INFO L270 CegarLoopResult]: At program point L11-11(lines 10 16) the Hoare annotation is: false [2020-11-30 02:08:41,080 INFO L274 CegarLoopResult]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2020-11-30 02:08:41,080 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:08:41,080 INFO L277 CegarLoopResult]: At program point L11-13(lines 10 16) the Hoare annotation is: true [2020-11-30 02:08:41,081 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:08:41,081 INFO L274 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-11-30 02:08:41,081 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-11-30 02:08:41,081 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-11-30 02:08:41,081 INFO L274 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-11-30 02:08:41,081 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-11-30 02:08:41,081 INFO L274 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2020-11-30 02:08:41,081 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 13) no Hoare annotation was computed. [2020-11-30 02:08:41,081 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:08:41,081 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:08:41,082 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:08:41,082 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:08:41,082 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:08:41,082 INFO L270 CegarLoopResult]: At program point L42-2(lines 34 51) the Hoare annotation is: false [2020-11-30 02:08:41,082 INFO L274 CegarLoopResult]: For program point L34-1(lines 34 51) no Hoare annotation was computed. [2020-11-30 02:08:41,082 INFO L274 CegarLoopResult]: For program point L34-3(lines 34 51) no Hoare annotation was computed. [2020-11-30 02:08:41,082 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:08:41,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:08:41 BoogieIcfgContainer [2020-11-30 02:08:41,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:08:41,092 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:08:41,092 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:08:41,092 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:08:41,093 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:08:37" (3/4) ... [2020-11-30 02:08:41,096 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:08:41,107 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-30 02:08:41,108 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-30 02:08:41,108 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 02:08:41,108 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:08:41,182 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5ea54a12-f867-4471-8004-89638b88996f/bin/utaipan/witness.graphml [2020-11-30 02:08:41,183 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:08:41,185 INFO L168 Benchmark]: Toolchain (without parser) took 5343.76 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 52.6 MB in the beginning and 49.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:08:41,185 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory was 58.5 MB in the beginning and 58.4 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:08:41,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.68 ms. Allocated memory is still 83.9 MB. Free memory was 52.4 MB in the beginning and 61.9 MB in the end (delta: -9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:08:41,187 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.11 ms. Allocated memory is still 83.9 MB. Free memory was 61.9 MB in the beginning and 60.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:08:41,188 INFO L168 Benchmark]: Boogie Preprocessor took 30.56 ms. Allocated memory is still 83.9 MB. Free memory was 60.2 MB in the beginning and 59.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:08:41,188 INFO L168 Benchmark]: RCFGBuilder took 756.99 ms. Allocated memory is still 83.9 MB. Free memory was 59.1 MB in the beginning and 34.3 MB in the end (delta: 24.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:08:41,189 INFO L168 Benchmark]: TraceAbstraction took 4016.24 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 34.0 MB in the beginning and 52.9 MB in the end (delta: -18.9 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:08:41,190 INFO L168 Benchmark]: Witness Printer took 91.08 ms. Allocated memory is still 102.8 MB. Free memory was 52.9 MB in the beginning and 49.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:08:41,193 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory was 58.5 MB in the beginning and 58.4 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 388.68 ms. Allocated memory is still 83.9 MB. Free memory was 52.4 MB in the beginning and 61.9 MB in the end (delta: -9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.11 ms. Allocated memory is still 83.9 MB. Free memory was 61.9 MB in the beginning and 60.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.56 ms. Allocated memory is still 83.9 MB. Free memory was 60.2 MB in the beginning and 59.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 756.99 ms. Allocated memory is still 83.9 MB. Free memory was 59.1 MB in the beginning and 34.3 MB in the end (delta: 24.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4016.24 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 34.0 MB in the beginning and 52.9 MB in the end (delta: -18.9 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Witness Printer took 91.08 ms. Allocated memory is still 102.8 MB. Free memory was 52.9 MB in the beginning and 49.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 54 SDslu, 119 SDs, 0 SdLazy, 54 SolverSat, 9 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=1, 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, 3 MinimizatonAttempts, 30 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 11 NumberOfFragments, 8 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 565 SizeOfPredicates, 14 NumberOfNonLiveVariables, 139 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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...