./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invariants/odd.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_05701881-05dd-4ab9-8d71-c1303e65c991/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_05701881-05dd-4ab9-8d71-c1303e65c991/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_05701881-05dd-4ab9-8d71-c1303e65c991/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_05701881-05dd-4ab9-8d71-c1303e65c991/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invariants/odd.c -s /tmp/vcloud-vcloud-master/worker/run_dir_05701881-05dd-4ab9-8d71-c1303e65c991/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_05701881-05dd-4ab9-8d71-c1303e65c991/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 0150d0ee9b9ae3758be926b566349c1f8c8a0ebd .......................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:06:45,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:45,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:45,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:45,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:45,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:45,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:45,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:45,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:45,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:45,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:45,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:45,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:45,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:45,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:45,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:45,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:45,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:45,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:45,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:45,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:45,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:45,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:45,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:45,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:45,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:45,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:45,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:45,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:45,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:45,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:45,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:45,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:45,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:45,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:45,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:45,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:45,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:45,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:45,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:45,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:45,830 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_05701881-05dd-4ab9-8d71-c1303e65c991/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:06:45,867 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:45,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:45,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:45,869 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:45,869 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:45,870 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:45,870 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:06:45,870 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:45,870 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:45,871 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:06:45,872 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:06:45,872 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:45,872 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:06:45,873 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:06:45,873 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:06:45,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:45,874 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:45,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:06:45,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:45,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:45,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:06:45,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:45,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:06:45,875 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:06:45,875 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:45,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:06:45,876 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:45,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:06:45,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:45,877 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:45,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:45,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:45,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:45,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:45,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:06:45,879 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:06:45,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:06:45,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:06:45,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:45,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:45,880 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_05701881-05dd-4ab9-8d71-c1303e65c991/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_05701881-05dd-4ab9-8d71-c1303e65c991/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0150d0ee9b9ae3758be926b566349c1f8c8a0ebd [2020-11-22 13:06:46,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:46,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:46,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:46,242 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:46,243 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:46,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_05701881-05dd-4ab9-8d71-c1303e65c991/bin/utaipan/../../sv-benchmarks/c/loop-invariants/odd.c [2020-11-22 13:06:46,311 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_05701881-05dd-4ab9-8d71-c1303e65c991/bin/utaipan/data/e44274057/2f674b0871194890aef7288315750728/FLAG8b7062e5b [2020-11-22 13:06:46,765 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:46,765 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_05701881-05dd-4ab9-8d71-c1303e65c991/sv-benchmarks/c/loop-invariants/odd.c [2020-11-22 13:06:46,774 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_05701881-05dd-4ab9-8d71-c1303e65c991/bin/utaipan/data/e44274057/2f674b0871194890aef7288315750728/FLAG8b7062e5b [2020-11-22 13:06:47,154 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_05701881-05dd-4ab9-8d71-c1303e65c991/bin/utaipan/data/e44274057/2f674b0871194890aef7288315750728 [2020-11-22 13:06:47,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:47,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:47,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:47,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:47,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:47,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:47" (1/1) ... [2020-11-22 13:06:47,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61facf0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:47, skipping insertion in model container [2020-11-22 13:06:47,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:47" (1/1) ... [2020-11-22 13:06:47,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:47,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:47,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:47,365 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:06:47,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:47,403 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:06:47,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:47 WrapperNode [2020-11-22 13:06:47,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:47,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:47,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:06:47,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:06:47,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:47" (1/1) ... [2020-11-22 13:06:47,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:47" (1/1) ... [2020-11-22 13:06:47,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:47,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:06:47,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:06:47,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:06:47,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:47" (1/1) ... [2020-11-22 13:06:47,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:47" (1/1) ... [2020-11-22 13:06:47,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:47" (1/1) ... [2020-11-22 13:06:47,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:47" (1/1) ... [2020-11-22 13:06:47,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:47" (1/1) ... [2020-11-22 13:06:47,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:47" (1/1) ... [2020-11-22 13:06:47,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:47" (1/1) ... [2020-11-22 13:06:47,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:06:47,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:06:47,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:06:47,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:06:47,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_05701881-05dd-4ab9-8d71-c1303e65c991/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:47,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:06:47,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:06:47,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:06:47,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:06:47,713 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:06:47,714 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:06:47,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:47 BoogieIcfgContainer [2020-11-22 13:06:47,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:06:47,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:06:47,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:06:47,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:06:47,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:06:47" (1/3) ... [2020-11-22 13:06:47,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75038c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:47, skipping insertion in model container [2020-11-22 13:06:47,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:47" (2/3) ... [2020-11-22 13:06:47,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75038c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:47, skipping insertion in model container [2020-11-22 13:06:47,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:47" (3/3) ... [2020-11-22 13:06:47,737 INFO L111 eAbstractionObserver]: Analyzing ICFG odd.c [2020-11-22 13:06:47,747 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:06:47,755 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:06:47,766 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:06:47,789 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:06:47,789 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:06:47,789 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:06:47,789 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:06:47,789 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:06:47,790 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:06:47,790 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:06:47,790 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:06:47,842 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-11-22 13:06:47,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:06:47,847 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:47,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:06:47,848 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:47,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:47,853 INFO L82 PathProgramCache]: Analyzing trace with hash 59538404, now seen corresponding path program 1 times [2020-11-22 13:06:47,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:47,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610129601] [2020-11-22 13:06:47,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:47,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:47,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610129601] [2020-11-22 13:06:47,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:47,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:06:47,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464803086] [2020-11-22 13:06:47,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:06:47,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:48,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:06:48,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:06:48,003 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-11-22 13:06:48,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:48,017 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-11-22 13:06:48,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:06:48,018 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-22 13:06:48,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:48,025 INFO L225 Difference]: With dead ends: 15 [2020-11-22 13:06:48,025 INFO L226 Difference]: Without dead ends: 7 [2020-11-22 13:06:48,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:06:48,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-11-22 13:06:48,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-11-22 13:06:48,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-22 13:06:48,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-11-22 13:06:48,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2020-11-22 13:06:48,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:48,063 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-11-22 13:06:48,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:06:48,064 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-11-22 13:06:48,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:06:48,064 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:48,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:06:48,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:06:48,065 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:48,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:48,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1839044207, now seen corresponding path program 1 times [2020-11-22 13:06:48,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:48,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737407421] [2020-11-22 13:06:48,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:48,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:48,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737407421] [2020-11-22 13:06:48,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:48,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:06:48,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532034539] [2020-11-22 13:06:48,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:48,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:48,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:48,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:48,172 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2020-11-22 13:06:48,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:48,203 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-11-22 13:06:48,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:48,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-22 13:06:48,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:48,205 INFO L225 Difference]: With dead ends: 13 [2020-11-22 13:06:48,205 INFO L226 Difference]: Without dead ends: 9 [2020-11-22 13:06:48,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:06:48,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-22 13:06:48,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-22 13:06:48,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-22 13:06:48,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-22 13:06:48,209 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2020-11-22 13:06:48,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:48,209 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-22 13:06:48,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:48,209 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-22 13:06:48,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:06:48,210 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:48,210 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:48,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:06:48,210 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:48,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:48,211 INFO L82 PathProgramCache]: Analyzing trace with hash 2138598570, now seen corresponding path program 1 times [2020-11-22 13:06:48,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:48,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987163317] [2020-11-22 13:06:48,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:48,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:48,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987163317] [2020-11-22 13:06:48,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646640733] [2020-11-22 13:06:48,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_05701881-05dd-4ab9-8d71-c1303e65c991/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:06:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:48,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:06:48,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:48,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:48,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:48,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-22 13:06:48,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-22 13:06:48,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 5 [2020-11-22 13:06:48,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636104345] [2020-11-22 13:06:48,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:48,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:48,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:48,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:06:48,556 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2020-11-22 13:06:48,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:48,573 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-11-22 13:06:48,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:48,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-22 13:06:48,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:48,574 INFO L225 Difference]: With dead ends: 9 [2020-11-22 13:06:48,574 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:06:48,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:06:48,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:06:48,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:06:48,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:06:48,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:06:48,576 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-11-22 13:06:48,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:48,576 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:06:48,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:48,576 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:06:48,576 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:06:48,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-22 13:06:48,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:06:48,812 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:06:48,812 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 15) no Hoare annotation was computed. [2020-11-22 13:06:48,813 INFO L270 CegarLoopResult]: At program point L13-3(lines 13 15) the Hoare annotation is: (<= (+ (* 2 (div ULTIMATE.start_main_~x~0 2)) 1) ULTIMATE.start_main_~x~0) [2020-11-22 13:06:48,813 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 15) no Hoare annotation was computed. [2020-11-22 13:06:48,813 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-11-22 13:06:48,813 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:06:48,813 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 13:06:48,813 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-11-22 13:06:48,813 INFO L277 CegarLoopResult]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2020-11-22 13:06:48,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:06:48 BoogieIcfgContainer [2020-11-22 13:06:48,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:06:48,836 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:06:48,836 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:06:48,836 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:06:48,836 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:47" (3/4) ... [2020-11-22 13:06:48,841 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:06:48,849 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-22 13:06:48,850 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-22 13:06:48,850 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-22 13:06:48,851 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:06:48,851 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:06:48,901 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_05701881-05dd-4ab9-8d71-c1303e65c991/bin/utaipan/witness.graphml [2020-11-22 13:06:48,901 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:06:48,902 INFO L168 Benchmark]: Toolchain (without parser) took 1744.19 ms. Allocated memory is still 136.3 MB. Free memory was 106.6 MB in the beginning and 49.5 MB in the end (delta: 57.1 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:48,903 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 86.0 MB. Free memory is still 46.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:48,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.63 ms. Allocated memory is still 136.3 MB. Free memory was 106.3 MB in the beginning and 114.5 MB in the end (delta: -8.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:48,903 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.97 ms. Allocated memory is still 136.3 MB. Free memory was 114.5 MB in the beginning and 113.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:48,904 INFO L168 Benchmark]: Boogie Preprocessor took 19.34 ms. Allocated memory is still 136.3 MB. Free memory was 113.2 MB in the beginning and 111.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:48,904 INFO L168 Benchmark]: RCFGBuilder took 260.37 ms. Allocated memory is still 136.3 MB. Free memory was 111.5 MB in the beginning and 98.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:48,904 INFO L168 Benchmark]: TraceAbstraction took 1117.84 ms. Allocated memory is still 136.3 MB. Free memory was 98.6 MB in the beginning and 52.4 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:48,905 INFO L168 Benchmark]: Witness Printer took 65.67 ms. Allocated memory is still 136.3 MB. Free memory was 52.4 MB in the beginning and 49.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:48,906 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 86.0 MB. Free memory is still 46.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 243.63 ms. Allocated memory is still 136.3 MB. Free memory was 106.3 MB in the beginning and 114.5 MB in the end (delta: -8.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.97 ms. Allocated memory is still 136.3 MB. Free memory was 114.5 MB in the beginning and 113.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.34 ms. Allocated memory is still 136.3 MB. Free memory was 113.2 MB in the beginning and 111.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 260.37 ms. Allocated memory is still 136.3 MB. Free memory was 111.5 MB in the beginning and 98.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1117.84 ms. Allocated memory is still 136.3 MB. Free memory was 98.6 MB in the beginning and 52.4 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. * Witness Printer took 65.67 ms. Allocated memory is still 136.3 MB. Free memory was 52.4 MB in the beginning and 49.5 MB in the end (delta: 3.0 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: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 2 * (x / 2) + 1 <= x - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 2 SDslu, 11 SDs, 0 SdLazy, 10 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 10 HoareAnnotationTreeSize, 2 FomulaSimplifications, 17 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 1072 SizeOfPredicates, 3 NumberOfNonLiveVariables, 61 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 2/6 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...