./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 54858612 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_1.5.800.v20200727-1323.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/termination-crafted/SyntaxSupportPointer01-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash f2a8d3919c0496882213752e07135061fdbafdf6 .......................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 03:57:10,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:57:10,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:57:10,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:57:10,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:57:10,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:57:10,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:57:10,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:57:10,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:57:10,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:57:10,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:57:10,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:57:10,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:57:10,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:57:10,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:57:10,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:57:10,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:57:10,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:57:10,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:57:10,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:57:10,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:57:10,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:57:10,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:57:10,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:57:10,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:57:10,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:57:10,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:57:10,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:57:10,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:57:10,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:57:10,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:57:10,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:57:10,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:57:10,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:57:10,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:57:10,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:57:10,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:57:10,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:57:10,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:57:10,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:57:10,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:57:10,298 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-10-26 03:57:10,327 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:57:10,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:57:10,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:57:10,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:57:10,329 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:57:10,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:57:10,329 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:57:10,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:57:10,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:57:10,330 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:57:10,330 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:57:10,330 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:57:10,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:57:10,331 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:57:10,331 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:57:10,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:57:10,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:57:10,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:57:10,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:57:10,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:57:10,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:57:10,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:57:10,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:57:10,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:57:10,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:57:10,333 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2a8d3919c0496882213752e07135061fdbafdf6 [2020-10-26 03:57:10,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:57:10,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:57:10,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:57:10,809 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:57:10,809 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:57:10,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c [2020-10-26 03:57:10,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82208bc75/cdaeb800bb8d4e07bb13d1772f64b5f2/FLAG8abbdf329 [2020-10-26 03:57:11,539 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:57:11,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c [2020-10-26 03:57:11,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82208bc75/cdaeb800bb8d4e07bb13d1772f64b5f2/FLAG8abbdf329 [2020-10-26 03:57:11,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82208bc75/cdaeb800bb8d4e07bb13d1772f64b5f2 [2020-10-26 03:57:11,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:57:11,912 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:57:11,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:57:11,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:57:11,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:57:11,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:57:11" (1/1) ... [2020-10-26 03:57:11,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0942b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:57:11, skipping insertion in model container [2020-10-26 03:57:11,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:57:11" (1/1) ... [2020-10-26 03:57:11,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:57:11,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:57:12,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:57:12,124 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:57:12,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:57:12,155 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:57:12,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:57:12 WrapperNode [2020-10-26 03:57:12,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:57:12,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:57:12,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:57:12,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:57:12,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:57:12" (1/1) ... [2020-10-26 03:57:12,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:57:12" (1/1) ... [2020-10-26 03:57:12,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:57:12" (1/1) ... [2020-10-26 03:57:12,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:57:12" (1/1) ... [2020-10-26 03:57:12,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:57:12" (1/1) ... [2020-10-26 03:57:12,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:57:12" (1/1) ... [2020-10-26 03:57:12,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:57:12" (1/1) ... [2020-10-26 03:57:12,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:57:12,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:57:12,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:57:12,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:57:12,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:57:12" (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 [2020-10-26 03:57:12,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:57:12,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:57:12,278 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:57:12,278 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 03:57:12,278 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-26 03:57:12,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:57:12,278 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:57:12,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 03:57:12,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 03:57:12,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 03:57:12,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:57:12,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:57:12,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:57:12,724 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:57:12,724 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 03:57:12,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:57:12 BoogieIcfgContainer [2020-10-26 03:57:12,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:57:12,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:57:12,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:57:12,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:57:12,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:57:11" (1/3) ... [2020-10-26 03:57:12,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e81201a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:57:12, skipping insertion in model container [2020-10-26 03:57:12,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:57:12" (2/3) ... [2020-10-26 03:57:12,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e81201a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:57:12, skipping insertion in model container [2020-10-26 03:57:12,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:57:12" (3/3) ... [2020-10-26 03:57:12,741 INFO L111 eAbstractionObserver]: Analyzing ICFG SyntaxSupportPointer01-1.c [2020-10-26 03:57:12,755 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:57:12,761 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-10-26 03:57:12,775 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-26 03:57:12,811 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:57:12,811 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:57:12,811 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:57:12,811 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:57:12,812 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:57:12,812 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:57:12,812 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:57:12,812 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:57:12,836 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-26 03:57:12,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-26 03:57:12,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:57:12,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:57:12,849 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2020-10-26 03:57:12,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:57:12,858 INFO L82 PathProgramCache]: Analyzing trace with hash -522028180, now seen corresponding path program 1 times [2020-10-26 03:57:12,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:57:12,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692763248] [2020-10-26 03:57:12,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:57:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:57:13,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:57:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:57:13,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:57:13,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692763248] [2020-10-26 03:57:13,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:57:13,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:57:13,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619646001] [2020-10-26 03:57:13,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:57:13,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:57:13,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:57:13,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:57:13,180 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 4 states. [2020-10-26 03:57:13,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:57:13,291 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-10-26 03:57:13,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:57:13,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-26 03:57:13,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:57:13,310 INFO L225 Difference]: With dead ends: 28 [2020-10-26 03:57:13,316 INFO L226 Difference]: Without dead ends: 25 [2020-10-26 03:57:13,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:57:13,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-26 03:57:13,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-26 03:57:13,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-26 03:57:13,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-10-26 03:57:13,364 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 7 [2020-10-26 03:57:13,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:57:13,364 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-10-26 03:57:13,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:57:13,365 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-10-26 03:57:13,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-26 03:57:13,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:57:13,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:57:13,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 03:57:13,367 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2020-10-26 03:57:13,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:57:13,368 INFO L82 PathProgramCache]: Analyzing trace with hash -522028179, now seen corresponding path program 1 times [2020-10-26 03:57:13,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:57:13,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516610072] [2020-10-26 03:57:13,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:57:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:57:13,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:57:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:57:13,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:57:13,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516610072] [2020-10-26 03:57:13,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:57:13,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:57:13,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601282855] [2020-10-26 03:57:13,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:57:13,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:57:13,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:57:13,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:57:13,434 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 4 states. [2020-10-26 03:57:13,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:57:13,488 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-26 03:57:13,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:57:13,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-26 03:57:13,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:57:13,490 INFO L225 Difference]: With dead ends: 20 [2020-10-26 03:57:13,490 INFO L226 Difference]: Without dead ends: 20 [2020-10-26 03:57:13,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:57:13,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-26 03:57:13,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-26 03:57:13,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-26 03:57:13,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-10-26 03:57:13,496 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2020-10-26 03:57:13,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:57:13,496 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-10-26 03:57:13,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:57:13,497 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-10-26 03:57:13,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 03:57:13,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:57:13,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:57:13,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 03:57:13,499 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2020-10-26 03:57:13,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:57:13,499 INFO L82 PathProgramCache]: Analyzing trace with hash -141661244, now seen corresponding path program 1 times [2020-10-26 03:57:13,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:57:13,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862900007] [2020-10-26 03:57:13,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:57:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:57:13,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:57:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:57:13,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:57:13,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862900007] [2020-10-26 03:57:13,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:57:13,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:57:13,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028956760] [2020-10-26 03:57:13,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:57:13,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:57:13,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:57:13,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:57:13,568 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 4 states. [2020-10-26 03:57:13,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:57:13,606 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-26 03:57:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:57:13,607 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-26 03:57:13,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:57:13,608 INFO L225 Difference]: With dead ends: 19 [2020-10-26 03:57:13,608 INFO L226 Difference]: Without dead ends: 19 [2020-10-26 03:57:13,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:57:13,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-26 03:57:13,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-26 03:57:13,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-26 03:57:13,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-26 03:57:13,613 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2020-10-26 03:57:13,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:57:13,614 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-26 03:57:13,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:57:13,614 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-26 03:57:13,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 03:57:13,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:57:13,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:57:13,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 03:57:13,616 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2020-10-26 03:57:13,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:57:13,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1302500167, now seen corresponding path program 1 times [2020-10-26 03:57:13,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:57:13,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587778095] [2020-10-26 03:57:13,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:57:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:57:13,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:57:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:57:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:57:13,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587778095] [2020-10-26 03:57:13,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:57:13,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:57:13,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446352257] [2020-10-26 03:57:13,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:57:13,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:57:13,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:57:13,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:57:13,724 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2020-10-26 03:57:13,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:57:13,791 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-10-26 03:57:13,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:57:13,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-26 03:57:13,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:57:13,794 INFO L225 Difference]: With dead ends: 18 [2020-10-26 03:57:13,794 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 03:57:13,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:57:13,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 03:57:13,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 03:57:13,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 03:57:13,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 03:57:13,796 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-10-26 03:57:13,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:57:13,796 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 03:57:13,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:57:13,797 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 03:57:13,797 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 03:57:13,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 03:57:13,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:57:13 BoogieIcfgContainer [2020-10-26 03:57:13,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:57:13,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:57:13,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:57:13,806 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:57:13,807 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:57:12" (3/4) ... [2020-10-26 03:57:13,811 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 03:57:13,819 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-26 03:57:13,819 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-26 03:57:13,826 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-26 03:57:13,826 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-26 03:57:13,827 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 03:57:13,827 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 03:57:13,886 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 03:57:13,886 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:57:13,889 INFO L168 Benchmark]: Toolchain (without parser) took 1981.33 ms. Allocated memory was 41.9 MB in the beginning and 60.8 MB in the end (delta: 18.9 MB). Free memory was 18.5 MB in the beginning and 36.6 MB in the end (delta: -18.1 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-26 03:57:13,890 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 41.9 MB. Free memory was 20.2 MB in the beginning and 20.2 MB in the end (delta: 63.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:57:13,893 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.99 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 17.9 MB in the beginning and 28.7 MB in the end (delta: -10.8 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-26 03:57:13,897 INFO L168 Benchmark]: Boogie Preprocessor took 35.91 ms. Allocated memory is still 50.3 MB. Free memory was 28.7 MB in the beginning and 27.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:57:13,897 INFO L168 Benchmark]: RCFGBuilder took 533.45 ms. Allocated memory is still 50.3 MB. Free memory was 27.3 MB in the beginning and 28.2 MB in the end (delta: -845.9 kB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2020-10-26 03:57:13,898 INFO L168 Benchmark]: TraceAbstraction took 1074.45 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.5 MB in the beginning and 39.1 MB in the end (delta: -11.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:57:13,901 INFO L168 Benchmark]: Witness Printer took 80.56 ms. Allocated memory is still 60.8 MB. Free memory was 39.1 MB in the beginning and 36.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:57:13,909 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 41.9 MB. Free memory was 20.2 MB in the beginning and 20.2 MB in the end (delta: 63.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 242.99 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 17.9 MB in the beginning and 28.7 MB in the end (delta: -10.8 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.91 ms. Allocated memory is still 50.3 MB. Free memory was 28.7 MB in the beginning and 27.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 533.45 ms. Allocated memory is still 50.3 MB. Free memory was 27.3 MB in the beginning and 28.2 MB in the end (delta: -845.9 kB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1074.45 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.5 MB in the beginning and 39.1 MB in the end (delta: -11.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 80.56 ms. Allocated memory is still 60.8 MB. Free memory was 39.1 MB in the beginning and 36.6 MB in the end (delta: 2.5 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: 13]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 33 locations, 12 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 44 SDslu, 30 SDs, 0 SdLazy, 109 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 0.2s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1529 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...