./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.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_926d8386-9210-4b54-a321-bb9b66158c35/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_926d8386-9210-4b54-a321-bb9b66158c35/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_926d8386-9210-4b54-a321-bb9b66158c35/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_926d8386-9210-4b54-a321-bb9b66158c35/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_926d8386-9210-4b54-a321-bb9b66158c35/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_926d8386-9210-4b54-a321-bb9b66158c35/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 6ce961dac043765dba705431aaca591312528e9c ......................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:37:31,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:37:31,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:37:31,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:37:31,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:37:31,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:37:31,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:37:31,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:37:31,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:37:31,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:37:31,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:37:31,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:37:31,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:37:31,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:37:31,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:37:31,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:37:31,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:37:31,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:37:31,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:37:31,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:37:31,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:37:31,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:37:31,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:37:31,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:37:32,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:37:32,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:37:32,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:37:32,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:37:32,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:37:32,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:37:32,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:37:32,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:37:32,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:37:32,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:37:32,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:37:32,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:37:32,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:37:32,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:37:32,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:37:32,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:37:32,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:37:32,013 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_926d8386-9210-4b54-a321-bb9b66158c35/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:37:32,037 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:37:32,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:37:32,039 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:37:32,039 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:37:32,039 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:37:32,039 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:37:32,040 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:37:32,040 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:37:32,040 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:37:32,040 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:37:32,040 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:37:32,041 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:37:32,041 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:37:32,041 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:37:32,042 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:37:32,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:37:32,042 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:37:32,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:37:32,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:37:32,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:37:32,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:37:32,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:37:32,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:37:32,044 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:37:32,044 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:37:32,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:37:32,045 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:37:32,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:37:32,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:37:32,046 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:37:32,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:37:32,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:32,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:37:32,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:37:32,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:37:32,047 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:37:32,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:37:32,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:37:32,048 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:37:32,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:37:32,048 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_926d8386-9210-4b54-a321-bb9b66158c35/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_926d8386-9210-4b54-a321-bb9b66158c35/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ce961dac043765dba705431aaca591312528e9c [2020-11-28 07:37:32,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:37:32,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:37:32,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:37:32,303 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:37:32,308 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:37:32,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_926d8386-9210-4b54-a321-bb9b66158c35/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c [2020-11-28 07:37:32,417 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_926d8386-9210-4b54-a321-bb9b66158c35/bin/utaipan/data/9bf3be79d/dacddd56875c4a3894f89bc35f35aaed/FLAGb7e240443 [2020-11-28 07:37:32,917 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:37:32,918 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_926d8386-9210-4b54-a321-bb9b66158c35/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c [2020-11-28 07:37:32,924 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_926d8386-9210-4b54-a321-bb9b66158c35/bin/utaipan/data/9bf3be79d/dacddd56875c4a3894f89bc35f35aaed/FLAGb7e240443 [2020-11-28 07:37:33,296 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_926d8386-9210-4b54-a321-bb9b66158c35/bin/utaipan/data/9bf3be79d/dacddd56875c4a3894f89bc35f35aaed [2020-11-28 07:37:33,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:37:33,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:37:33,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:33,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:37:33,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:37:33,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:33" (1/1) ... [2020-11-28 07:37:33,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d854e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:33, skipping insertion in model container [2020-11-28 07:37:33,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:33" (1/1) ... [2020-11-28 07:37:33,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:37:33,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:37:33,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:33,515 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:37:33,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:33,545 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:37:33,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:33 WrapperNode [2020-11-28 07:37:33,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:33,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:33,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:37:33,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:37:33,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:33" (1/1) ... [2020-11-28 07:37:33,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:33" (1/1) ... [2020-11-28 07:37:33,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:33,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:37:33,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:37:33,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:37:33,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:33" (1/1) ... [2020-11-28 07:37:33,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:33" (1/1) ... [2020-11-28 07:37:33,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:33" (1/1) ... [2020-11-28 07:37:33,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:33" (1/1) ... [2020-11-28 07:37:33,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:33" (1/1) ... [2020-11-28 07:37:33,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:33" (1/1) ... [2020-11-28 07:37:33,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:33" (1/1) ... [2020-11-28 07:37:33,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:37:33,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:37:33,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:37:33,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:37:33,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_926d8386-9210-4b54-a321-bb9b66158c35/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:33,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:37:33,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:37:33,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:37:33,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:37:34,204 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:37:34,205 INFO L298 CfgBuilder]: Removed 21 assume(true) statements. [2020-11-28 07:37:34,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:34 BoogieIcfgContainer [2020-11-28 07:37:34,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:37:34,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:37:34,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:37:34,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:37:34,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:37:33" (1/3) ... [2020-11-28 07:37:34,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f18f4ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:34, skipping insertion in model container [2020-11-28 07:37:34,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:33" (2/3) ... [2020-11-28 07:37:34,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f18f4ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:34, skipping insertion in model container [2020-11-28 07:37:34,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:34" (3/3) ... [2020-11-28 07:37:34,215 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound2.c [2020-11-28 07:37:34,225 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:37:34,230 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 07:37:34,249 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 07:37:34,278 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:37:34,279 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:37:34,279 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:37:34,279 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:37:34,279 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:37:34,279 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:37:34,280 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:37:34,280 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:37:34,292 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-11-28 07:37:34,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:37:34,297 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:34,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:37:34,298 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:34,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:34,312 INFO L82 PathProgramCache]: Analyzing trace with hash 3643536, now seen corresponding path program 1 times [2020-11-28 07:37:34,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:34,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404138286] [2020-11-28 07:37:34,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:34,459 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:37:34,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785820871] [2020-11-28 07:37:34,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_926d8386-9210-4b54-a321-bb9b66158c35/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:37:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:34,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:37:34,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:37:34,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:34,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:37:34,654 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:37:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:34,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404138286] [2020-11-28 07:37:34,679 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:37:34,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785820871] [2020-11-28 07:37:34,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:34,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:37:34,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435082975] [2020-11-28 07:37:34,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:37:34,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:34,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:37:34,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:37:34,698 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 5 states. [2020-11-28 07:37:36,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:36,887 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2020-11-28 07:37:36,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:37:36,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2020-11-28 07:37:36,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:36,899 INFO L225 Difference]: With dead ends: 35 [2020-11-28 07:37:36,899 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 07:37:36,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:37:36,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 07:37:36,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-11-28 07:37:36,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 07:37:36,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-28 07:37:36,935 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 4 [2020-11-28 07:37:36,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:36,936 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-28 07:37:36,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:37:36,936 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-28 07:37:36,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:37:36,937 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:36,937 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2020-11-28 07:37:37,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-28 07:37:37,153 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:37,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:37,154 INFO L82 PathProgramCache]: Analyzing trace with hash 706577936, now seen corresponding path program 1 times [2020-11-28 07:37:37,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:37,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119395666] [2020-11-28 07:37:37,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:37,180 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:37:37,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42432750] [2020-11-28 07:37:37,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_926d8386-9210-4b54-a321-bb9b66158c35/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:37:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:37,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:37:37,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:37:37,276 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:37,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:37:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:37,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119395666] [2020-11-28 07:37:37,301 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:37:37,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42432750] [2020-11-28 07:37:37,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:37,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-28 07:37:37,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263712127] [2020-11-28 07:37:37,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:37:37,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:37,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:37:37,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:37:37,305 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2020-11-28 07:37:37,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:37,322 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-28 07:37:37,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:37:37,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-28 07:37:37,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:37,324 INFO L225 Difference]: With dead ends: 16 [2020-11-28 07:37:37,324 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:37:37,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:37:37,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:37:37,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:37:37,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:37:37,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:37:37,325 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-28 07:37:37,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:37,326 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:37:37,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:37:37,326 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:37:37,326 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:37:37,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:37:37,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:37:37,686 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-11-28 07:37:37,741 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-28 07:37:37,742 INFO L270 CegarLoopResult]: At program point L36-2(lines 36 46) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~k~0)) (.cse1 (<= ULTIMATE.start_main_~k~0 2))) (or (and (<= 2 ULTIMATE.start_main_~c~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1) (+ ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0)) .cse0 .cse1) (and (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~c~0) .cse0 .cse1))) [2020-11-28 07:37:37,742 INFO L274 CegarLoopResult]: For program point L36-3(lines 36 46) no Hoare annotation was computed. [2020-11-28 07:37:37,742 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:37:37,742 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-28 07:37:37,742 INFO L274 CegarLoopResult]: For program point L16(lines 16 19) no Hoare annotation was computed. [2020-11-28 07:37:37,742 INFO L270 CegarLoopResult]: At program point L16-1(lines 39 40) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= 0 ULTIMATE.start_main_~k~0)) (.cse2 (<= ULTIMATE.start_main_~k~0 2))) (or (and (<= 2 ULTIMATE.start_main_~c~0) .cse0 (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1) (+ ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0)) .cse1 .cse2) (and (= ULTIMATE.start_main_~x~0 1) .cse0 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~c~0) .cse1 .cse2))) [2020-11-28 07:37:37,743 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 19) no Hoare annotation was computed. [2020-11-28 07:37:37,743 INFO L277 CegarLoopResult]: At program point L16-3(lines 15 21) the Hoare annotation is: true [2020-11-28 07:37:37,743 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:37:37,743 INFO L274 CegarLoopResult]: For program point L17(lines 17 18) no Hoare annotation was computed. [2020-11-28 07:37:37,743 INFO L274 CegarLoopResult]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2020-11-28 07:37:37,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:37:37 BoogieIcfgContainer [2020-11-28 07:37:37,769 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:37:37,771 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:37:37,771 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:37:37,771 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:37:37,772 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:34" (3/4) ... [2020-11-28 07:37:37,774 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:37:37,783 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-28 07:37:37,783 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 07:37:37,784 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 07:37:37,784 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:37:37,823 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_926d8386-9210-4b54-a321-bb9b66158c35/bin/utaipan/witness.graphml [2020-11-28 07:37:37,823 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:37:37,824 INFO L168 Benchmark]: Toolchain (without parser) took 4523.19 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 58.4 MB in the beginning and 76.6 MB in the end (delta: -18.1 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:37,825 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory was 47.0 MB in the beginning and 47.0 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:37,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.24 ms. Allocated memory is still 88.1 MB. Free memory was 58.1 MB in the beginning and 66.2 MB in the end (delta: -8.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:37,826 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.48 ms. Allocated memory is still 88.1 MB. Free memory was 66.2 MB in the beginning and 64.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:37,826 INFO L168 Benchmark]: Boogie Preprocessor took 21.01 ms. Allocated memory is still 88.1 MB. Free memory was 64.9 MB in the beginning and 63.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:37,827 INFO L168 Benchmark]: RCFGBuilder took 605.17 ms. Allocated memory is still 88.1 MB. Free memory was 63.7 MB in the beginning and 40.7 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:37,828 INFO L168 Benchmark]: TraceAbstraction took 3561.19 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 40.3 MB in the beginning and 79.3 MB in the end (delta: -39.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:37,828 INFO L168 Benchmark]: Witness Printer took 52.39 ms. Allocated memory is still 109.1 MB. Free memory was 79.3 MB in the beginning and 76.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:37,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory was 47.0 MB in the beginning and 47.0 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 244.24 ms. Allocated memory is still 88.1 MB. Free memory was 58.1 MB in the beginning and 66.2 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 32.48 ms. Allocated memory is still 88.1 MB. Free memory was 66.2 MB in the beginning and 64.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.01 ms. Allocated memory is still 88.1 MB. Free memory was 64.9 MB in the beginning and 63.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 605.17 ms. Allocated memory is still 88.1 MB. Free memory was 63.7 MB in the beginning and 40.7 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3561.19 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 40.3 MB in the beginning and 79.3 MB in the end (delta: -39.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * Witness Printer took 52.39 ms. Allocated memory is still 109.1 MB. Free memory was 79.3 MB in the beginning and 76.6 MB in the end (delta: 2.8 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: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((2 <= c && 1 <= cond) && z * x + 1 == y + x) && 0 <= k) && k <= 2) || (((((x == 1 && 1 <= cond) && z == y) && 1 <= c) && 0 <= k) && k <= 2) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((2 <= c && 1 <= cond) && z * x + 1 == y + x) && 0 <= k) && k <= 2) || ((((x == 1 && z == y) && 1 <= c) && 0 <= k) && k <= 2) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 2, TraceHistogramMax: 3, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 11 SDslu, 21 SDs, 0 SdLazy, 23 SolverSat, 8 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 9 NumberOfFragments, 82 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 882 SizeOfPredicates, 6 NumberOfNonLiveVariables, 136 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 14/14 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...