./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/scopes4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-ext3/scopes4-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87dcbb1d4539995e5aba39e6053775ca0fac811e ....................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:17:08,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:17:08,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:17:08,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:17:08,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:17:08,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:17:08,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:17:08,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:17:08,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:17:08,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:17:08,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:17:08,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:17:08,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:17:08,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:17:08,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:17:08,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:17:08,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:17:08,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:17:08,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:17:08,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:17:08,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:17:08,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:17:08,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:17:08,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:17:08,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:17:08,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:17:08,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:17:08,189 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:17:08,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:17:08,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:17:08,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:17:08,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:17:08,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:17:08,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:17:08,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:17:08,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:17:08,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:17:08,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:17:08,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:17:08,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:17:08,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:17:08,197 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 06:17:08,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:17:08,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:17:08,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:17:08,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:17:08,228 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:17:08,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:17:08,228 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:17:08,228 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:17:08,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:17:08,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:17:08,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:17:08,229 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:17:08,229 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:17:08,229 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:17:08,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:17:08,230 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:17:08,230 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:17:08,230 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:17:08,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:17:08,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:17:08,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:17:08,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:17:08,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:17:08,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:17:08,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:17:08,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:17:08,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:17:08,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:17:08,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer 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 -> 87dcbb1d4539995e5aba39e6053775ca0fac811e [2020-10-20 06:17:08,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:17:08,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:17:08,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:17:08,453 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:17:08,454 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:17:08,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/scopes4-1.c [2020-10-20 06:17:08,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2fd7c65/2c4fd6fb0bb04a7e9dc6968708e43815/FLAGf347cbe8d [2020-10-20 06:17:08,890 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:17:08,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/scopes4-1.c [2020-10-20 06:17:08,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2fd7c65/2c4fd6fb0bb04a7e9dc6968708e43815/FLAGf347cbe8d [2020-10-20 06:17:09,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2fd7c65/2c4fd6fb0bb04a7e9dc6968708e43815 [2020-10-20 06:17:09,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:17:09,277 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:17:09,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:17:09,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:17:09,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:17:09,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:17:09" (1/1) ... [2020-10-20 06:17:09,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fd502d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:09, skipping insertion in model container [2020-10-20 06:17:09,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:17:09" (1/1) ... [2020-10-20 06:17:09,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:17:09,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:17:09,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:17:09,603 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:17:09,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:17:09,638 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:17:09,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:09 WrapperNode [2020-10-20 06:17:09,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:17:09,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:17:09,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:17:09,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:17:09,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:09" (1/1) ... [2020-10-20 06:17:09,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:09" (1/1) ... [2020-10-20 06:17:09,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:09" (1/1) ... [2020-10-20 06:17:09,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:09" (1/1) ... [2020-10-20 06:17:09,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:09" (1/1) ... [2020-10-20 06:17:09,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:09" (1/1) ... [2020-10-20 06:17:09,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:09" (1/1) ... [2020-10-20 06:17:09,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:17:09,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:17:09,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:17:09,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:17:09,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 06:17:09,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:17:09,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:17:09,771 INFO L138 BoogieDeclarations]: Found implementation of procedure foo2 [2020-10-20 06:17:09,771 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-20 06:17:09,772 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:17:09,772 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-20 06:17:09,773 INFO L130 BoogieDeclarations]: Found specification of procedure foo2 [2020-10-20 06:17:09,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:17:09,773 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-20 06:17:09,773 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:17:09,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:17:09,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:17:09,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:17:09,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:17:09,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:17:09,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:17:10,013 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:17:10,013 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-20 06:17:10,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:17:10 BoogieIcfgContainer [2020-10-20 06:17:10,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:17:10,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:17:10,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:17:10,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:17:10,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:17:09" (1/3) ... [2020-10-20 06:17:10,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6938ef7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:17:10, skipping insertion in model container [2020-10-20 06:17:10,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:09" (2/3) ... [2020-10-20 06:17:10,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6938ef7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:17:10, skipping insertion in model container [2020-10-20 06:17:10,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:17:10" (3/3) ... [2020-10-20 06:17:10,027 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes4-1.c [2020-10-20 06:17:10,041 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:17:10,051 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-20 06:17:10,075 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-20 06:17:10,104 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:17:10,107 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:17:10,110 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:17:10,110 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:17:10,111 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:17:10,111 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:17:10,111 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:17:10,111 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:17:10,149 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-20 06:17:10,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 06:17:10,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:10,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:10,178 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, foo2Err0REQUIRES_VIOLATION, foo2Err1REQUIRES_VIOLATION]=== [2020-10-20 06:17:10,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:10,194 INFO L82 PathProgramCache]: Analyzing trace with hash -325957377, now seen corresponding path program 1 times [2020-10-20 06:17:10,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:10,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166101559] [2020-10-20 06:17:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:10,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:10,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:10,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166101559] [2020-10-20 06:17:10,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:17:10,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:17:10,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879381766] [2020-10-20 06:17:10,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:17:10,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:10,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:17:10,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:17:10,611 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 4 states. [2020-10-20 06:17:10,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:10,748 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-10-20 06:17:10,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:17:10,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-20 06:17:10,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:10,761 INFO L225 Difference]: With dead ends: 24 [2020-10-20 06:17:10,768 INFO L226 Difference]: Without dead ends: 19 [2020-10-20 06:17:10,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:17:10,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-20 06:17:10,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-20 06:17:10,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-20 06:17:10,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2020-10-20 06:17:10,811 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 8 [2020-10-20 06:17:10,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:10,811 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2020-10-20 06:17:10,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:17:10,811 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2020-10-20 06:17:10,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 06:17:10,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:10,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:10,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:17:10,813 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, foo2Err0REQUIRES_VIOLATION, foo2Err1REQUIRES_VIOLATION]=== [2020-10-20 06:17:10,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:10,814 INFO L82 PathProgramCache]: Analyzing trace with hash -325957376, now seen corresponding path program 1 times [2020-10-20 06:17:10,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:10,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897581726] [2020-10-20 06:17:10,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:10,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:10,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897581726] [2020-10-20 06:17:10,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:17:10,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:17:10,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199032097] [2020-10-20 06:17:10,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:17:10,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:10,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:17:10,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:17:10,928 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand 4 states. [2020-10-20 06:17:11,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:11,036 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2020-10-20 06:17:11,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:17:11,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-20 06:17:11,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:11,039 INFO L225 Difference]: With dead ends: 18 [2020-10-20 06:17:11,039 INFO L226 Difference]: Without dead ends: 18 [2020-10-20 06:17:11,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:17:11,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-20 06:17:11,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-20 06:17:11,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 06:17:11,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-10-20 06:17:11,044 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 8 [2020-10-20 06:17:11,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:11,045 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-10-20 06:17:11,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:17:11,045 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-10-20 06:17:11,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 06:17:11,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:11,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:11,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:17:11,047 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, foo2Err0REQUIRES_VIOLATION, foo2Err1REQUIRES_VIOLATION]=== [2020-10-20 06:17:11,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:11,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1826979706, now seen corresponding path program 1 times [2020-10-20 06:17:11,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:11,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150088280] [2020-10-20 06:17:11,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:11,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:11,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:17:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:11,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:11,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:11,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150088280] [2020-10-20 06:17:11,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:17:11,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-20 06:17:11,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087354774] [2020-10-20 06:17:11,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:17:11,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:11,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:17:11,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:17:11,209 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 10 states. [2020-10-20 06:17:11,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:11,395 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2020-10-20 06:17:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:17:11,395 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-10-20 06:17:11,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:11,401 INFO L225 Difference]: With dead ends: 17 [2020-10-20 06:17:11,401 INFO L226 Difference]: Without dead ends: 17 [2020-10-20 06:17:11,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-20 06:17:11,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-20 06:17:11,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-20 06:17:11,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-20 06:17:11,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2020-10-20 06:17:11,406 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 16 [2020-10-20 06:17:11,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:11,406 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2020-10-20 06:17:11,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:17:11,406 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2020-10-20 06:17:11,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 06:17:11,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:11,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:11,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:17:11,408 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, foo2Err0REQUIRES_VIOLATION, foo2Err1REQUIRES_VIOLATION]=== [2020-10-20 06:17:11,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:11,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1826979705, now seen corresponding path program 1 times [2020-10-20 06:17:11,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:11,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628853791] [2020-10-20 06:17:11,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:11,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:11,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:17:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:11,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:11,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:11,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628853791] [2020-10-20 06:17:11,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:17:11,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-20 06:17:11,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607835806] [2020-10-20 06:17:11,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:17:11,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:11,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:17:11,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:17:11,691 INFO L87 Difference]: Start difference. First operand 17 states and 16 transitions. Second operand 10 states. [2020-10-20 06:17:11,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:11,929 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-10-20 06:17:11,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:17:11,929 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-10-20 06:17:11,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:11,930 INFO L225 Difference]: With dead ends: 16 [2020-10-20 06:17:11,930 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:17:11,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-20 06:17:11,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:17:11,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:17:11,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:17:11,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:17:11,933 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-20 06:17:11,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:11,934 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:17:11,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:17:11,935 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:17:11,935 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:17:11,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:17:11,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:17:11 BoogieIcfgContainer [2020-10-20 06:17:11,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:17:11,943 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:17:11,943 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:17:11,944 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:17:11,944 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:17:10" (3/4) ... [2020-10-20 06:17:11,948 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:17:11,956 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-20 06:17:11,956 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2020-10-20 06:17:11,957 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-20 06:17:11,957 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo2 [2020-10-20 06:17:11,963 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 06:17:11,964 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-20 06:17:11,964 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:17:11,964 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:17:12,011 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:17:12,011 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:17:12,014 INFO L168 Benchmark]: Toolchain (without parser) took 2741.84 ms. Allocated memory was 36.2 MB in the beginning and 54.0 MB in the end (delta: 17.8 MB). Free memory was 11.4 MB in the beginning and 30.5 MB in the end (delta: -19.1 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:17:12,015 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 35.7 MB. Free memory was 14.7 MB in the beginning and 14.7 MB in the end (delta: 49.0 kB). Peak memory consumption was 49.0 kB. Max. memory is 14.3 GB. [2020-10-20 06:17:12,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.41 ms. Allocated memory was 36.2 MB in the beginning and 44.6 MB in the end (delta: 8.4 MB). Free memory was 10.5 MB in the beginning and 28.1 MB in the end (delta: -17.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:12,016 INFO L168 Benchmark]: Boogie Preprocessor took 47.26 ms. Allocated memory is still 44.6 MB. Free memory was 28.1 MB in the beginning and 26.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:12,017 INFO L168 Benchmark]: RCFGBuilder took 328.47 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 26.3 MB in the beginning and 26.0 MB in the end (delta: 253.0 kB). Peak memory consumption was 14.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:12,018 INFO L168 Benchmark]: TraceAbstraction took 1925.67 ms. Allocated memory was 46.1 MB in the beginning and 54.0 MB in the end (delta: 7.9 MB). Free memory was 25.5 MB in the beginning and 33.6 MB in the end (delta: -8.1 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:17:12,019 INFO L168 Benchmark]: Witness Printer took 68.12 ms. Allocated memory is still 54.0 MB. Free memory was 33.6 MB in the beginning and 30.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:12,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 35.7 MB. Free memory was 14.7 MB in the beginning and 14.7 MB in the end (delta: 49.0 kB). Peak memory consumption was 49.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 361.41 ms. Allocated memory was 36.2 MB in the beginning and 44.6 MB in the end (delta: 8.4 MB). Free memory was 10.5 MB in the beginning and 28.1 MB in the end (delta: -17.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 47.26 ms. Allocated memory is still 44.6 MB. Free memory was 28.1 MB in the beginning and 26.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 328.47 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 26.3 MB in the beginning and 26.0 MB in the end (delta: 253.0 kB). Peak memory consumption was 14.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1925.67 ms. Allocated memory was 46.1 MB in the beginning and 54.0 MB in the end (delta: 7.9 MB). Free memory was 25.5 MB in the beginning and 33.6 MB in the end (delta: -8.1 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 68.12 ms. Allocated memory is still 54.0 MB. Free memory was 33.6 MB in the beginning and 30.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 6]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 6]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 36 SDslu, 53 SDs, 0 SdLazy, 197 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 4757 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...