./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/count_by_1_variant.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d7619614-7076-4330-b918-99785e900b01/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d7619614-7076-4330-b918-99785e900b01/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d7619614-7076-4330-b918-99785e900b01/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d7619614-7076-4330-b918-99785e900b01/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-new/count_by_1_variant.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d7619614-7076-4330-b918-99785e900b01/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d7619614-7076-4330-b918-99785e900b01/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 1a2ad7e0b5490d38497860251c3047d8de1153f2 ................................................................................................................................................................................................................................................................................................................................................ 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 12:50:02,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:50:02,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:50:02,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:50:02,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:50:02,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:50:02,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:50:02,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:50:02,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:50:02,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:50:02,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:50:02,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:50:02,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:50:02,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:50:02,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:50:02,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:50:02,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:50:02,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:50:02,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:50:02,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:50:02,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:50:02,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:50:02,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:50:02,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:50:02,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:50:02,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:50:02,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:50:02,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:50:02,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:50:02,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:50:02,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:50:02,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:50:02,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:50:02,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:50:02,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:50:02,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:50:02,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:50:02,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:50:02,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:50:02,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:50:02,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:50:02,249 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d7619614-7076-4330-b918-99785e900b01/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:50:02,293 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:50:02,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:50:02,294 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:50:02,295 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:50:02,295 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:50:02,295 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:50:02,296 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:50:02,296 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:50:02,296 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:50:02,296 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:50:02,297 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:50:02,298 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:50:02,298 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:50:02,298 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:50:02,299 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:50:02,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:50:02,300 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:50:02,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:50:02,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:50:02,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:50:02,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:50:02,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:50:02,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:50:02,301 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:50:02,301 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:50:02,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:50:02,302 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:50:02,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:50:02,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:50:02,303 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:50:02,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:50:02,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:50:02,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:50:02,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:50:02,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:50:02,305 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:50:02,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:50:02,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:50:02,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:50:02,305 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:50:02,306 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_d7619614-7076-4330-b918-99785e900b01/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d7619614-7076-4330-b918-99785e900b01/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a2ad7e0b5490d38497860251c3047d8de1153f2 [2020-11-22 12:50:02,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:50:02,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:50:02,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:50:02,664 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:50:02,665 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:50:02,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d7619614-7076-4330-b918-99785e900b01/bin/utaipan/../../sv-benchmarks/c/loop-new/count_by_1_variant.i [2020-11-22 12:50:02,750 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d7619614-7076-4330-b918-99785e900b01/bin/utaipan/data/37ff763b7/13c1907b5de44b4bb55fa2e6899030a1/FLAG06fe047d0 [2020-11-22 12:50:03,253 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:50:03,253 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d7619614-7076-4330-b918-99785e900b01/sv-benchmarks/c/loop-new/count_by_1_variant.i [2020-11-22 12:50:03,259 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d7619614-7076-4330-b918-99785e900b01/bin/utaipan/data/37ff763b7/13c1907b5de44b4bb55fa2e6899030a1/FLAG06fe047d0 [2020-11-22 12:50:03,601 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d7619614-7076-4330-b918-99785e900b01/bin/utaipan/data/37ff763b7/13c1907b5de44b4bb55fa2e6899030a1 [2020-11-22 12:50:03,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:50:03,605 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:50:03,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:50:03,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:50:03,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:50:03,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:50:03" (1/1) ... [2020-11-22 12:50:03,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14066370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:50:03, skipping insertion in model container [2020-11-22 12:50:03,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:50:03" (1/1) ... [2020-11-22 12:50:03,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:50:03,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:50:03,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:50:03,870 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:50:03,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:50:03,896 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:50:03,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:50:03 WrapperNode [2020-11-22 12:50:03,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:50:03,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:50:03,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:50:03,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:50:03,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:50:03" (1/1) ... [2020-11-22 12:50:03,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:50:03" (1/1) ... [2020-11-22 12:50:03,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:50:03,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:50:03,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:50:03,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:50:03,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:50:03" (1/1) ... [2020-11-22 12:50:03,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:50:03" (1/1) ... [2020-11-22 12:50:03,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:50:03" (1/1) ... [2020-11-22 12:50:03,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:50:03" (1/1) ... [2020-11-22 12:50:03,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:50:03" (1/1) ... [2020-11-22 12:50:03,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:50:03" (1/1) ... [2020-11-22 12:50:04,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:50:03" (1/1) ... [2020-11-22 12:50:04,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:50:04,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:50:04,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:50:04,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:50:04,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:50:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7619614-7076-4330-b918-99785e900b01/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 12:50:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:50:04,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:50:04,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:50:04,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:50:04,471 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:50:04,471 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 12:50:04,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:50:04 BoogieIcfgContainer [2020-11-22 12:50:04,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:50:04,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:50:04,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:50:04,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:50:04,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:50:03" (1/3) ... [2020-11-22 12:50:04,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304472f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:50:04, skipping insertion in model container [2020-11-22 12:50:04,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:50:03" (2/3) ... [2020-11-22 12:50:04,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304472f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:50:04, skipping insertion in model container [2020-11-22 12:50:04,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:50:04" (3/3) ... [2020-11-22 12:50:04,509 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2020-11-22 12:50:04,530 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:50:04,534 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:50:04,560 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:50:04,607 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:50:04,607 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:50:04,607 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:50:04,608 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:50:04,608 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:50:04,608 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:50:04,608 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:50:04,609 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:50:04,631 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-11-22 12:50:04,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 12:50:04,640 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:50:04,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 12:50:04,642 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:50:04,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:50:04,652 INFO L82 PathProgramCache]: Analyzing trace with hash 64059940, now seen corresponding path program 1 times [2020-11-22 12:50:04,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:50:04,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767930719] [2020-11-22 12:50:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:50:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:50:04,956 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 12:50:04,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767930719] [2020-11-22 12:50:04,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:50:04,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:50:04,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666857156] [2020-11-22 12:50:04,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:50:04,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:50:04,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:50:04,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:50:04,987 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2020-11-22 12:50:05,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:50:05,060 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2020-11-22 12:50:05,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:50:05,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-22 12:50:05,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:50:05,079 INFO L225 Difference]: With dead ends: 20 [2020-11-22 12:50:05,079 INFO L226 Difference]: Without dead ends: 10 [2020-11-22 12:50:05,082 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 12:50:05,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-22 12:50:05,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-11-22 12:50:05,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-22 12:50:05,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-22 12:50:05,122 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2020-11-22 12:50:05,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:50:05,123 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-22 12:50:05,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:50:05,123 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-22 12:50:05,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:50:05,124 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:50:05,124 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-11-22 12:50:05,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:50:05,125 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:50:05,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:50:05,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1052331592, now seen corresponding path program 1 times [2020-11-22 12:50:05,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:50:05,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027234130] [2020-11-22 12:50:05,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:50:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:50:05,214 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 12:50:05,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027234130] [2020-11-22 12:50:05,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592955831] [2020-11-22 12:50:05,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7619614-7076-4330-b918-99785e900b01/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 12:50:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:50:05,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 12:50:05,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:50:05,377 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 12:50:05,384 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 12:50:05,409 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 12:50:05,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:50:05,434 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:50:05,482 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 12:50:05,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1916358259] [2020-11-22 12:50:05,506 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-22 12:50:05,506 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 12:50:05,511 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 12:50:05,517 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 12:50:05,518 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 12:50:05,877 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 12:50:06,126 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 19 [2020-11-22 12:50:06,593 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2020-11-22 12:50:06,597 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:50:06,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 12:50:06,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2020-11-22 12:50:06,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120732131] [2020-11-22 12:50:06,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-22 12:50:06,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:50:06,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-22 12:50:06,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-11-22 12:50:06,601 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 9 states. [2020-11-22 12:50:06,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:50:06,718 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2020-11-22 12:50:06,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 12:50:06,719 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 8 [2020-11-22 12:50:06,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:50:06,720 INFO L225 Difference]: With dead ends: 14 [2020-11-22 12:50:06,720 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:50:06,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-11-22 12:50:06,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:50:06,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:50:06,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:50:06,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:50:06,722 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-11-22 12:50:06,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:50:06,722 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:50:06,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-22 12:50:06,723 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:50:06,723 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:50:06,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-22 12:50:06,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:50:07,042 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:50:07,043 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:50:07,043 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 12:50:07,043 INFO L270 CegarLoopResult]: At program point L26-2(lines 26 28) the Hoare annotation is: (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~i~0 1000000)) (= ULTIMATE.start_main_~i~0 0)) [2020-11-22 12:50:07,043 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-22 12:50:07,044 INFO L270 CegarLoopResult]: At program point L18-2(lines 1 30) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~i~0 999999)) [2020-11-22 12:50:07,044 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-22 12:50:07,044 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-22 12:50:07,044 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-22 12:50:07,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:50:07 BoogieIcfgContainer [2020-11-22 12:50:07,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:50:07,062 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:50:07,062 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:50:07,062 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:50:07,063 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:50:04" (3/4) ... [2020-11-22 12:50:07,066 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:50:07,081 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-22 12:50:07,081 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-22 12:50:07,082 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:50:07,082 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:50:07,132 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d7619614-7076-4330-b918-99785e900b01/bin/utaipan/witness.graphml [2020-11-22 12:50:07,132 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:50:07,134 INFO L168 Benchmark]: Toolchain (without parser) took 3528.50 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 98.1 MB in the beginning and 83.2 MB in the end (delta: 14.9 MB). Peak memory consumption was 41.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:50:07,135 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 39.8 MB in the beginning and 39.8 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:50:07,135 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.99 ms. Allocated memory is still 127.9 MB. Free memory was 98.1 MB in the beginning and 104.6 MB in the end (delta: -6.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:50:07,136 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.34 ms. Allocated memory is still 127.9 MB. Free memory was 104.6 MB in the beginning and 103.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:50:07,136 INFO L168 Benchmark]: Boogie Preprocessor took 60.36 ms. Allocated memory is still 127.9 MB. Free memory was 103.5 MB in the beginning and 102.5 MB in the end (delta: 970.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:50:07,137 INFO L168 Benchmark]: RCFGBuilder took 454.73 ms. Allocated memory is still 127.9 MB. Free memory was 102.0 MB in the beginning and 89.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:50:07,138 INFO L168 Benchmark]: TraceAbstraction took 2585.30 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 89.4 MB in the beginning and 86.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:50:07,139 INFO L168 Benchmark]: Witness Printer took 70.85 ms. Allocated memory is still 155.2 MB. Free memory was 86.3 MB in the beginning and 83.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:50:07,142 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 39.8 MB in the beginning and 39.8 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 290.99 ms. Allocated memory is still 127.9 MB. Free memory was 98.1 MB in the beginning and 104.6 MB in the end (delta: -6.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.34 ms. Allocated memory is still 127.9 MB. Free memory was 104.6 MB in the beginning and 103.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.36 ms. Allocated memory is still 127.9 MB. Free memory was 103.5 MB in the beginning and 102.5 MB in the end (delta: 970.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 454.73 ms. Allocated memory is still 127.9 MB. Free memory was 102.0 MB in the beginning and 89.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2585.30 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 89.4 MB in the beginning and 86.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. * Witness Printer took 70.85 ms. Allocated memory is still 155.2 MB. Free memory was 86.3 MB in the beginning and 83.2 MB in the end (delta: 3.1 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: 12]: 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: 1]: Loop Invariant Derived loop invariant: 1 <= cond && i <= 999999 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (1 <= cond && i <= 1000000) || i == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 SDtfs, 19 SDslu, 8 SDs, 0 SdLazy, 20 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.9s 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 9 NumberOfFragments, 18 HoareAnnotationTreeSize, 2 FomulaSimplifications, 27 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 57 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 SizeOfPredicates, 3 NumberOfNonLiveVariables, 44 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/6 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...