./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark26_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_19049cdc-e7c5-4766-91b2-c44b56d5c8b8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_19049cdc-e7c5-4766-91b2-c44b56d5c8b8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_19049cdc-e7c5-4766-91b2-c44b56d5c8b8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_19049cdc-e7c5-4766-91b2-c44b56d5c8b8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark26_linear.i -s /tmp/vcloud-vcloud-master/worker/run_dir_19049cdc-e7c5-4766-91b2-c44b56d5c8b8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_19049cdc-e7c5-4766-91b2-c44b56d5c8b8/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 7a6eaea59c0b35225373a459ea8360d703e45820 ................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 18:57:48,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:57:48,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:57:48,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:57:48,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:57:48,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:57:48,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:57:48,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:57:48,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:57:48,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:57:48,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:57:48,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:57:48,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:57:48,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:57:48,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:57:48,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:57:48,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:57:48,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:57:48,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:57:48,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:57:48,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:57:48,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:57:48,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:57:48,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:57:48,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:57:48,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:57:48,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:57:48,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:57:48,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:57:48,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:57:48,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:57:48,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:57:48,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:57:48,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:57:48,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:57:48,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:57:48,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:57:48,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:57:48,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:57:48,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:57:48,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:57:48,156 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_19049cdc-e7c5-4766-91b2-c44b56d5c8b8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 18:57:48,180 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:57:48,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:57:48,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:57:48,185 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:57:48,186 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:57:48,186 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:57:48,186 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 18:57:48,186 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:57:48,186 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:57:48,186 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 18:57:48,186 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 18:57:48,186 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:57:48,187 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 18:57:48,187 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 18:57:48,187 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 18:57:48,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:57:48,187 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:57:48,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:57:48,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:57:48,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:57:48,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:57:48,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:57:48,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:57:48,188 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:57:48,188 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:57:48,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:57:48,188 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:57:48,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:57:48,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:57:48,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:57:48,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:57:48,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:57:48,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:57:48,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:57:48,189 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 18:57:48,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 18:57:48,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:57:48,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:57:48,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:57:48,190 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_19049cdc-e7c5-4766-91b2-c44b56d5c8b8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_19049cdc-e7c5-4766-91b2-c44b56d5c8b8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a6eaea59c0b35225373a459ea8360d703e45820 [2020-12-09 18:57:48,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:57:48,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:57:48,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:57:48,372 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:57:48,373 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:57:48,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_19049cdc-e7c5-4766-91b2-c44b56d5c8b8/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark26_linear.i [2020-12-09 18:57:48,413 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_19049cdc-e7c5-4766-91b2-c44b56d5c8b8/bin/utaipan/data/85dfe8d91/4316861703a449199edb6b5f6228ac26/FLAGc7b37e32c [2020-12-09 18:57:48,768 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:57:48,769 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_19049cdc-e7c5-4766-91b2-c44b56d5c8b8/sv-benchmarks/c/loop-zilu/benchmark26_linear.i [2020-12-09 18:57:48,780 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_19049cdc-e7c5-4766-91b2-c44b56d5c8b8/bin/utaipan/data/85dfe8d91/4316861703a449199edb6b5f6228ac26/FLAGc7b37e32c [2020-12-09 18:57:48,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_19049cdc-e7c5-4766-91b2-c44b56d5c8b8/bin/utaipan/data/85dfe8d91/4316861703a449199edb6b5f6228ac26 [2020-12-09 18:57:48,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:57:48,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:57:48,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:57:48,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:57:48,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:57:48,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:57:48" (1/1) ... [2020-12-09 18:57:48,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7788d506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:48, skipping insertion in model container [2020-12-09 18:57:48,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:57:48" (1/1) ... [2020-12-09 18:57:48,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:57:48,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:57:48,916 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_19049cdc-e7c5-4766-91b2-c44b56d5c8b8/sv-benchmarks/c/loop-zilu/benchmark26_linear.i[868,881] [2020-12-09 18:57:48,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:57:48,929 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:57:48,938 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_19049cdc-e7c5-4766-91b2-c44b56d5c8b8/sv-benchmarks/c/loop-zilu/benchmark26_linear.i[868,881] [2020-12-09 18:57:48,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:57:48,950 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:57:48,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:48 WrapperNode [2020-12-09 18:57:48,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:57:48,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:57:48,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:57:48,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:57:48,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:48" (1/1) ... [2020-12-09 18:57:48,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:48" (1/1) ... [2020-12-09 18:57:48,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:57:48,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:57:48,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:57:48,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:57:48,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:48" (1/1) ... [2020-12-09 18:57:48,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:48" (1/1) ... [2020-12-09 18:57:48,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:48" (1/1) ... [2020-12-09 18:57:48,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:48" (1/1) ... [2020-12-09 18:57:48,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:48" (1/1) ... [2020-12-09 18:57:48,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:48" (1/1) ... [2020-12-09 18:57:48,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:48" (1/1) ... [2020-12-09 18:57:48,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:57:48,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:57:48,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:57:48,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:57:48,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19049cdc-e7c5-4766-91b2-c44b56d5c8b8/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 [2020-12-09 18:57:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 18:57:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:57:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:57:49,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:57:49,200 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:57:49,201 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 18:57:49,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:57:49 BoogieIcfgContainer [2020-12-09 18:57:49,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:57:49,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:57:49,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:57:49,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:57:49,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:57:48" (1/3) ... [2020-12-09 18:57:49,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3149abe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:57:49, skipping insertion in model container [2020-12-09 18:57:49,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:48" (2/3) ... [2020-12-09 18:57:49,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3149abe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:57:49, skipping insertion in model container [2020-12-09 18:57:49,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:57:49" (3/3) ... [2020-12-09 18:57:49,208 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark26_linear.i [2020-12-09 18:57:49,218 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:57:49,222 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 18:57:49,234 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 18:57:49,256 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:57:49,256 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:57:49,256 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:57:49,256 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:57:49,256 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:57:49,256 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:57:49,257 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:57:49,257 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:57:49,266 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-12-09 18:57:49,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 18:57:49,270 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:57:49,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 18:57:49,271 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:57:49,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:57:49,275 INFO L82 PathProgramCache]: Analyzing trace with hash 59349214, now seen corresponding path program 1 times [2020-12-09 18:57:49,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:57:49,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635907482] [2020-12-09 18:57:49,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:57:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:57:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:57:49,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635907482] [2020-12-09 18:57:49,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:57:49,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:57:49,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047038608] [2020-12-09 18:57:49,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:57:49,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:57:49,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:57:49,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:57:49,411 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-12-09 18:57:49,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:57:49,447 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2020-12-09 18:57:49,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:57:49,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 18:57:49,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:57:49,457 INFO L225 Difference]: With dead ends: 16 [2020-12-09 18:57:49,457 INFO L226 Difference]: Without dead ends: 7 [2020-12-09 18:57:49,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:57:49,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-12-09 18:57:49,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-12-09 18:57:49,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-12-09 18:57:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-12-09 18:57:49,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2020-12-09 18:57:49,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:57:49,487 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-12-09 18:57:49,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:57:49,487 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-12-09 18:57:49,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 18:57:49,488 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:57:49,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 18:57:49,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 18:57:49,488 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:57:49,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:57:49,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1839242300, now seen corresponding path program 1 times [2020-12-09 18:57:49,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:57:49,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401663169] [2020-12-09 18:57:49,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:57:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:57:49,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:57:49,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401663169] [2020-12-09 18:57:49,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515358983] [2020-12-09 18:57:49,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19049cdc-e7c5-4766-91b2-c44b56d5c8b8/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 [2020-12-09 18:57:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:57:49,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 18:57:49,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:57:49,656 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:57:49,661 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 18:57:49,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:57:49,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:57:49,689 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 18:57:49,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:57:49,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1228397167] [2020-12-09 18:57:49,722 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-12-09 18:57:49,722 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 18:57:49,725 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 18:57:49,729 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 18:57:49,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 18:57:49,915 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 18:57:50,202 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2020-12-09 18:57:50,363 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2020-12-09 18:57:50,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 18:57:50,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5] total 9 [2020-12-09 18:57:50,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465139219] [2020-12-09 18:57:50,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 18:57:50,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:57:50,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 18:57:50,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-09 18:57:50,367 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2020-12-09 18:57:50,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:57:50,386 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2020-12-09 18:57:50,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 18:57:50,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-12-09 18:57:50,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:57:50,388 INFO L225 Difference]: With dead ends: 7 [2020-12-09 18:57:50,388 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 18:57:50,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-09 18:57:50,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 18:57:50,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 18:57:50,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 18:57:50,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 18:57:50,390 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-12-09 18:57:50,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:57:50,390 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 18:57:50,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 18:57:50,390 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 18:57:50,390 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 18:57:50,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 18:57:50,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 18:57:50,756 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-12-09 18:57:50,760 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 18:57:50,760 INFO L265 CegarLoopResult]: At program point L27(lines 19 28) the Hoare annotation is: true [2020-12-09 18:57:50,761 INFO L258 CegarLoopResult]: At program point L23-2(lines 23 25) the Hoare annotation is: (and (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648)) (let ((.cse15 (select |#memory_int| |#t~string0.base|))) (let ((.cse0 (= |#t~string1.offset| 0)) (.cse1 (= |#NULL.base| 0)) (.cse2 (= (select .cse15 |#t~string0.offset|) 48)) (.cse3 (= (select .cse15 (+ |#t~string0.offset| 1)) 0)) (.cse4 (= (select |#valid| 0) 0)) (.cse5 (= 2 (select |#length| |#t~string0.base|))) (.cse6 (<= ULTIMATE.start_main_~y~0 2147483647)) (.cse7 (= (select |#length| |#t~string1.base|) 21)) (.cse8 (< |#StackHeapBarrier| |#t~string0.base|)) (.cse9 (= (select |#valid| |#t~string0.base|) 1)) (.cse10 (< 0 |#StackHeapBarrier|)) (.cse11 (< |#StackHeapBarrier| |#t~string1.base|)) (.cse12 (= |#NULL.offset| 0)) (.cse13 (= (select |#valid| |#t~string1.base|) 1)) (.cse14 (= |#t~string0.offset| 0))) (or (and .cse0 .cse1 (<= 0 (+ ULTIMATE.start_main_~x~0 2147483647)) .cse2 .cse3 .cse4 (< ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~y~0 1)) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)))))) [2020-12-09 18:57:50,761 INFO L262 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-12-09 18:57:50,761 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 18:57:50,761 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-12-09 18:57:50,761 INFO L262 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-12-09 18:57:50,761 INFO L262 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-12-09 18:57:50,761 INFO L262 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-12-09 18:57:50,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:57:50 BoogieIcfgContainer [2020-12-09 18:57:50,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:57:50,783 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:57:50,783 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:57:50,783 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:57:50,783 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:57:49" (3/4) ... [2020-12-09 18:57:50,785 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 18:57:50,791 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 18:57:50,791 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-09 18:57:50,791 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 18:57:50,791 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 18:57:50,815 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_19049cdc-e7c5-4766-91b2-c44b56d5c8b8/bin/utaipan/witness.graphml [2020-12-09 18:57:50,815 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:57:50,816 INFO L168 Benchmark]: Toolchain (without parser) took 2018.50 ms. Allocated memory was 109.1 MB in the beginning and 144.7 MB in the end (delta: 35.7 MB). Free memory was 88.8 MB in the beginning and 117.4 MB in the end (delta: -28.6 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-12-09 18:57:50,816 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 71.3 MB. Free memory was 43.0 MB in the beginning and 43.0 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:57:50,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.86 ms. Allocated memory is still 109.1 MB. Free memory was 88.6 MB in the beginning and 79.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 18:57:50,817 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.33 ms. Allocated memory is still 109.1 MB. Free memory was 79.1 MB in the beginning and 77.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:57:50,817 INFO L168 Benchmark]: Boogie Preprocessor took 13.59 ms. Allocated memory is still 109.1 MB. Free memory was 77.7 MB in the beginning and 76.8 MB in the end (delta: 976.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:57:50,818 INFO L168 Benchmark]: RCFGBuilder took 214.17 ms. Allocated memory is still 109.1 MB. Free memory was 76.8 MB in the beginning and 63.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 18:57:50,818 INFO L168 Benchmark]: TraceAbstraction took 1578.86 ms. Allocated memory was 109.1 MB in the beginning and 144.7 MB in the end (delta: 35.7 MB). Free memory was 63.2 MB in the beginning and 119.5 MB in the end (delta: -56.3 MB). Peak memory consumption was 44.9 MB. Max. memory is 16.1 GB. [2020-12-09 18:57:50,819 INFO L168 Benchmark]: Witness Printer took 32.32 ms. Allocated memory is still 144.7 MB. Free memory was 119.5 MB in the beginning and 117.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:57:50,821 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 71.3 MB. Free memory was 43.0 MB in the beginning and 43.0 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 152.86 ms. Allocated memory is still 109.1 MB. Free memory was 88.6 MB in the beginning and 79.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.33 ms. Allocated memory is still 109.1 MB. Free memory was 79.1 MB in the beginning and 77.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.59 ms. Allocated memory is still 109.1 MB. Free memory was 77.7 MB in the beginning and 76.8 MB in the end (delta: 976.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 214.17 ms. Allocated memory is still 109.1 MB. Free memory was 76.8 MB in the beginning and 63.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1578.86 ms. Allocated memory was 109.1 MB in the beginning and 144.7 MB in the end (delta: 35.7 MB). Free memory was 63.2 MB in the beginning and 119.5 MB in the end (delta: -56.3 MB). Peak memory consumption was 44.9 MB. Max. memory is 16.1 GB. * Witness Printer took 32.32 ms. Allocated memory is still 144.7 MB. Free memory was 119.5 MB in the beginning and 117.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 <= x + 2147483648 && ((((((((((((((((("benchmark26_linear.c" == 0 && #NULL == 0) && 0 <= x + 2147483647) && unknown-#memory_int-unknown["0"]["0"] == 48) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && x < y + 1) && 2 == unknown-#length-unknown["0"]) && y <= 2147483647) && unknown-#length-unknown["benchmark26_linear.c"] == 21) && unknown-#StackHeapBarrier-unknown < "0") && \valid["0"] == 1) && 0 < unknown-#StackHeapBarrier-unknown) && unknown-#StackHeapBarrier-unknown < "benchmark26_linear.c") && #NULL == 0) && \valid["benchmark26_linear.c"] == 1) && "0" == 0) || ((((((((((((((("benchmark26_linear.c" == 0 && #NULL == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && 2 == unknown-#length-unknown["0"]) && y <= 2147483647) && unknown-#length-unknown["benchmark26_linear.c"] == 21) && unknown-#StackHeapBarrier-unknown < "0") && \valid["0"] == 1) && 0 < unknown-#StackHeapBarrier-unknown) && unknown-#StackHeapBarrier-unknown < "benchmark26_linear.c") && #NULL == 0) && \valid["benchmark26_linear.c"] == 1) && "0" == 0) && x < y)) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 3 SDslu, 5 SDs, 0 SdLazy, 11 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 153 HoareAnnotationTreeSize, 2 FomulaSimplifications, 156 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 254 SizeOfPredicates, 5 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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: OVERALL_TIME[ms]: 194, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 5, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 6, TOOLS_POST_TIME[ms]: 90, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 6, TOOLS_QUANTIFIERELIM_TIME[ms]: 88, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 78, FLUID_QUERY_TIME[ms]: 2, FLUID_QUERIES: 16, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 63, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 4, DOMAIN_ISBOTTOM_APPLICATIONS: 5, DOMAIN_ISBOTTOM_TIME[ms]: 9, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 79, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 79, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 1, PATH_EXPR_TIME[ms]: 2, REGEX_TO_DAG_TIME[ms]: 2, DAG_COMPRESSION_TIME[ms]: 4, DAG_COMPRESSION_PROCESSED_NODES: 33, DAG_COMPRESSION_RETAINED_NODES: 18, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...