./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound5.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_bac5c866-9fe3-49bf-b009-0381c1c8d3cd/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bac5c866-9fe3-49bf-b009-0381c1c8d3cd/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bac5c866-9fe3-49bf-b009-0381c1c8d3cd/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bac5c866-9fe3-49bf-b009-0381c1c8d3cd/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bac5c866-9fe3-49bf-b009-0381c1c8d3cd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bac5c866-9fe3-49bf-b009-0381c1c8d3cd/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 d08716cb17e61760b7d7e95fb6d91ac6831dd2f3 ........................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:49:14,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:49:14,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:49:14,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:49:14,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:49:14,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:49:14,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:49:14,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:49:14,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:49:14,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:49:14,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:49:14,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:49:14,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:49:14,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:49:14,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:49:14,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:49:14,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:49:14,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:49:14,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:49:14,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:49:14,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:49:14,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:49:14,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:49:14,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:49:14,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:49:14,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:49:14,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:49:14,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:49:14,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:49:14,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:49:14,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:49:14,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:49:14,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:49:14,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:49:14,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:49:14,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:49:14,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:49:14,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:49:14,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:49:14,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:49:14,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:49:14,359 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bac5c866-9fe3-49bf-b009-0381c1c8d3cd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:49:14,405 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:49:14,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:49:14,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:49:14,407 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:49:14,407 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:49:14,407 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:49:14,408 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:49:14,408 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:49:14,408 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:49:14,408 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:49:14,409 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:49:14,410 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:49:14,410 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:49:14,410 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:49:14,410 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:49:14,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:49:14,411 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:49:14,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:49:14,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:49:14,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:49:14,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:49:14,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:49:14,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:49:14,413 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:49:14,413 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:49:14,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:49:14,413 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:49:14,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:49:14,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:49:14,414 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:49:14,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:49:14,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:49:14,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:49:14,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:49:14,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:49:14,417 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:49:14,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:49:14,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:49:14,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:49:14,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:49:14,418 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_bac5c866-9fe3-49bf-b009-0381c1c8d3cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bac5c866-9fe3-49bf-b009-0381c1c8d3cd/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d08716cb17e61760b7d7e95fb6d91ac6831dd2f3 [2020-11-22 12:49:14,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:49:14,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:49:14,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:49:14,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:49:14,708 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:49:14,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bac5c866-9fe3-49bf-b009-0381c1c8d3cd/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound5.c [2020-11-22 12:49:14,820 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bac5c866-9fe3-49bf-b009-0381c1c8d3cd/bin/utaipan/data/0efbd1cfc/9ad4b95173934d19bba8bf91a7e8f238/FLAGf1c40b830 [2020-11-22 12:49:15,257 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:49:15,258 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bac5c866-9fe3-49bf-b009-0381c1c8d3cd/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound5.c [2020-11-22 12:49:15,264 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bac5c866-9fe3-49bf-b009-0381c1c8d3cd/bin/utaipan/data/0efbd1cfc/9ad4b95173934d19bba8bf91a7e8f238/FLAGf1c40b830 [2020-11-22 12:49:15,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bac5c866-9fe3-49bf-b009-0381c1c8d3cd/bin/utaipan/data/0efbd1cfc/9ad4b95173934d19bba8bf91a7e8f238 [2020-11-22 12:49:15,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:49:15,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:49:15,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:49:15,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:49:15,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:49:15,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:49:15" (1/1) ... [2020-11-22 12:49:15,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66eb1d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:15, skipping insertion in model container [2020-11-22 12:49:15,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:49:15" (1/1) ... [2020-11-22 12:49:15,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:49:15,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:49:15,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:49:15,871 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:49:15,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:49:15,921 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:49:15,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:15 WrapperNode [2020-11-22 12:49:15,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:49:15,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:49:15,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:49:15,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:49:15,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:15" (1/1) ... [2020-11-22 12:49:15,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:15" (1/1) ... [2020-11-22 12:49:15,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:49:15,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:49:15,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:49:15,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:49:15,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:15" (1/1) ... [2020-11-22 12:49:15,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:15" (1/1) ... [2020-11-22 12:49:16,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:15" (1/1) ... [2020-11-22 12:49:16,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:15" (1/1) ... [2020-11-22 12:49:16,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:15" (1/1) ... [2020-11-22 12:49:16,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:15" (1/1) ... [2020-11-22 12:49:16,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:15" (1/1) ... [2020-11-22 12:49:16,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:49:16,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:49:16,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:49:16,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:49:16,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bac5c866-9fe3-49bf-b009-0381c1c8d3cd/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:49:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:49:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:49:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:49:16,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:49:16,791 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:49:16,791 INFO L298 CfgBuilder]: Removed 37 assume(true) statements. [2020-11-22 12:49:16,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:49:16 BoogieIcfgContainer [2020-11-22 12:49:16,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:49:16,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:49:16,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:49:16,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:49:16,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:49:15" (1/3) ... [2020-11-22 12:49:16,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d72f6c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:49:16, skipping insertion in model container [2020-11-22 12:49:16,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:15" (2/3) ... [2020-11-22 12:49:16,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d72f6c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:49:16, skipping insertion in model container [2020-11-22 12:49:16,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:49:16" (3/3) ... [2020-11-22 12:49:16,806 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound5.c [2020-11-22 12:49:16,814 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:49:16,818 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-22 12:49:16,828 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-22 12:49:16,848 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:49:16,849 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:49:16,849 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:49:16,849 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:49:16,849 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:49:16,849 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:49:16,849 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:49:16,849 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:49:16,863 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-22 12:49:16,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 12:49:16,868 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:49:16,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 12:49:16,869 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]=== [2020-11-22 12:49:16,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:49:16,875 INFO L82 PathProgramCache]: Analyzing trace with hash 156726576, now seen corresponding path program 1 times [2020-11-22 12:49:16,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:49:16,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750932982] [2020-11-22 12:49:16,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:49:16,981 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:49:16,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [557700726] [2020-11-22 12:49:16,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bac5c866-9fe3-49bf-b009-0381c1c8d3cd/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:49:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:49:17,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-22 12:49:17,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:49:17,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:49:17,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:49:17,144 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:49:17,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:49:17,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750932982] [2020-11-22 12:49:17,232 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:49:17,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557700726] [2020-11-22 12:49:17,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:49:17,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 12:49:17,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546263663] [2020-11-22 12:49:17,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:49:17,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:49:17,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:49:17,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:49:17,258 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-11-22 12:49:19,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:49:19,738 INFO L93 Difference]: Finished difference Result 121 states and 157 transitions. [2020-11-22 12:49:19,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:49:19,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-22 12:49:19,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:49:19,753 INFO L225 Difference]: With dead ends: 121 [2020-11-22 12:49:19,753 INFO L226 Difference]: Without dead ends: 83 [2020-11-22 12:49:19,756 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 [2020-11-22 12:49:19,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-22 12:49:19,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 53. [2020-11-22 12:49:19,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-22 12:49:19,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2020-11-22 12:49:19,795 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 5 [2020-11-22 12:49:19,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:49:19,795 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2020-11-22 12:49:19,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:49:19,795 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2020-11-22 12:49:19,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 12:49:19,796 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:49:19,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 12:49:20,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-22 12:49:20,023 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]=== [2020-11-22 12:49:20,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:49:20,024 INFO L82 PathProgramCache]: Analyzing trace with hash 563543714, now seen corresponding path program 1 times [2020-11-22 12:49:20,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:49:20,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953089247] [2020-11-22 12:49:20,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:49:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:49:20,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:49:20,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953089247] [2020-11-22 12:49:20,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:49:20,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:49:20,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093186947] [2020-11-22 12:49:20,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:49:20,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:49:20,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:49:20,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:49:20,110 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand 4 states. [2020-11-22 12:49:20,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:49:20,133 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-11-22 12:49:20,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:49:20,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-22 12:49:20,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:49:20,136 INFO L225 Difference]: With dead ends: 67 [2020-11-22 12:49:20,137 INFO L226 Difference]: Without dead ends: 53 [2020-11-22 12:49:20,137 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 [2020-11-22 12:49:20,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-22 12:49:20,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-11-22 12:49:20,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-22 12:49:20,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2020-11-22 12:49:20,150 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 6 [2020-11-22 12:49:20,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:49:20,151 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2020-11-22 12:49:20,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:49:20,151 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2020-11-22 12:49:20,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 12:49:20,151 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:49:20,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:49:20,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:49:20,152 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]=== [2020-11-22 12:49:20,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:49:20,152 INFO L82 PathProgramCache]: Analyzing trace with hash 290570963, now seen corresponding path program 1 times [2020-11-22 12:49:20,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:49:20,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614977969] [2020-11-22 12:49:20,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:49:20,165 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:49:20,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339808874] [2020-11-22 12:49:20,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bac5c866-9fe3-49bf-b009-0381c1c8d3cd/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 [2020-11-22 12:49:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:49:20,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-22 12:49:20,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:49:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:49:20,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:49:20,271 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:49:20,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:49:20,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614977969] [2020-11-22 12:49:20,292 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:49:20,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339808874] [2020-11-22 12:49:20,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:49:20,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 3 [2020-11-22 12:49:20,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63555994] [2020-11-22 12:49:20,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:49:20,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:49:20,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:49:20,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:49:20,294 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 4 states. [2020-11-22 12:49:20,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:49:20,296 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2020-11-22 12:49:20,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:49:20,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-22 12:49:20,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:49:20,297 INFO L225 Difference]: With dead ends: 53 [2020-11-22 12:49:20,297 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:49:20,297 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 [2020-11-22 12:49:20,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:49:20,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:49:20,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:49:20,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:49:20,298 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-11-22 12:49:20,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:49:20,298 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:49:20,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:49:20,299 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:49:20,306 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:49:20,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:49:20,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:49:20,550 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:49:20,550 INFO L274 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:49:20,550 INFO L270 CegarLoopResult]: At program point L11-1(lines 10 16) the Hoare annotation is: false [2020-11-22 12:49:20,550 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:49:20,550 INFO L270 CegarLoopResult]: At program point L11-3(lines 10 16) the Hoare annotation is: false [2020-11-22 12:49:20,550 INFO L274 CegarLoopResult]: For program point L11-4(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:49:20,550 INFO L270 CegarLoopResult]: At program point L11-5(lines 39 40) the Hoare annotation is: false [2020-11-22 12:49:20,550 INFO L274 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:49:20,551 INFO L270 CegarLoopResult]: At program point L11-7(lines 10 16) the Hoare annotation is: false [2020-11-22 12:49:20,551 INFO L274 CegarLoopResult]: For program point L11-8(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:49:20,551 INFO L270 CegarLoopResult]: At program point L11-9(lines 10 16) the Hoare annotation is: false [2020-11-22 12:49:20,551 INFO L274 CegarLoopResult]: For program point L11-10(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:49:20,551 INFO L270 CegarLoopResult]: At program point L11-11(lines 10 16) the Hoare annotation is: false [2020-11-22 12:49:20,551 INFO L274 CegarLoopResult]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:49:20,551 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:49:20,551 INFO L277 CegarLoopResult]: At program point L11-13(lines 10 16) the Hoare annotation is: true [2020-11-22 12:49:20,552 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:49:20,552 INFO L274 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:49:20,552 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:49:20,552 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:49:20,552 INFO L274 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:49:20,552 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:49:20,552 INFO L274 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:49:20,552 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:49:20,553 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:49:20,553 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:49:20,553 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:49:20,553 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:49:20,553 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:49:20,553 INFO L270 CegarLoopResult]: At program point L42-2(lines 34 51) the Hoare annotation is: false [2020-11-22 12:49:20,553 INFO L274 CegarLoopResult]: For program point L34-1(lines 34 51) no Hoare annotation was computed. [2020-11-22 12:49:20,554 INFO L274 CegarLoopResult]: For program point L34-3(lines 34 51) no Hoare annotation was computed. [2020-11-22 12:49:20,554 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:49:20,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:49:20 BoogieIcfgContainer [2020-11-22 12:49:20,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:49:20,563 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:49:20,564 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:49:20,564 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:49:20,564 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:49:16" (3/4) ... [2020-11-22 12:49:20,567 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:49:20,577 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-22 12:49:20,577 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-22 12:49:20,578 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:49:20,578 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:49:20,629 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bac5c866-9fe3-49bf-b009-0381c1c8d3cd/bin/utaipan/witness.graphml [2020-11-22 12:49:20,629 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:49:20,630 INFO L168 Benchmark]: Toolchain (without parser) took 5000.31 ms. Allocated memory was 81.8 MB in the beginning and 102.8 MB in the end (delta: 21.0 MB). Free memory was 48.4 MB in the beginning and 70.7 MB in the end (delta: -22.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:49:20,631 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 81.8 MB. Free memory was 54.0 MB in the beginning and 54.0 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:49:20,631 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.53 ms. Allocated memory was 81.8 MB in the beginning and 102.8 MB in the end (delta: 21.0 MB). Free memory was 48.2 MB in the beginning and 79.9 MB in the end (delta: -31.7 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:20,632 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.98 ms. Allocated memory is still 102.8 MB. Free memory was 79.9 MB in the beginning and 78.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:20,632 INFO L168 Benchmark]: Boogie Preprocessor took 49.17 ms. Allocated memory is still 102.8 MB. Free memory was 78.2 MB in the beginning and 76.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:20,633 INFO L168 Benchmark]: RCFGBuilder took 767.19 ms. Allocated memory is still 102.8 MB. Free memory was 76.8 MB in the beginning and 79.9 MB in the end (delta: -3.1 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:20,634 INFO L168 Benchmark]: TraceAbstraction took 3767.90 ms. Allocated memory is still 102.8 MB. Free memory was 79.2 MB in the beginning and 74.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:20,634 INFO L168 Benchmark]: Witness Printer took 65.47 ms. Allocated memory is still 102.8 MB. Free memory was 74.3 MB in the beginning and 70.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:20,637 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 81.8 MB. Free memory was 54.0 MB in the beginning and 54.0 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.53 ms. Allocated memory was 81.8 MB in the beginning and 102.8 MB in the end (delta: 21.0 MB). Free memory was 48.2 MB in the beginning and 79.9 MB in the end (delta: -31.7 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.98 ms. Allocated memory is still 102.8 MB. Free memory was 79.9 MB in the beginning and 78.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.17 ms. Allocated memory is still 102.8 MB. Free memory was 78.2 MB in the beginning and 76.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 767.19 ms. Allocated memory is still 102.8 MB. Free memory was 76.8 MB in the beginning and 79.9 MB in the end (delta: -3.1 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3767.90 ms. Allocated memory is still 102.8 MB. Free memory was 79.2 MB in the beginning and 74.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. * Witness Printer took 65.47 ms. Allocated memory is still 102.8 MB. Free memory was 74.3 MB in the beginning and 70.7 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: 3.6s, 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, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s 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...