./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memsetNonZero2.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/ldv-memsafety/memsetNonZero2.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 c0ea593d74670c91cacf864f376c3b9b3ea0d491 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 06:04:23,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:04:23,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:04:23,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:04:23,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:04:23,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:04:23,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:04:23,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:04:23,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:04:23,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:04:23,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:04:23,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:04:23,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:04:23,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:04:23,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:04:23,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:04:23,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:04:23,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:04:23,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:04:23,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:04:23,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:04:23,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:04:23,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:04:23,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:04:23,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:04:23,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:04:23,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:04:23,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:04:23,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:04:23,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:04:23,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:04:23,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:04:23,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:04:23,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:04:23,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:04:23,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:04:23,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:04:23,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:04:23,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:04:23,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:04:23,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:04:23,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 06:04:23,707 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:04:23,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:04:23,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:04:23,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:04:23,709 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:04:23,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:04:23,714 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:04:23,714 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:04:23,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:04:23,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:04:23,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:04:23,715 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:04:23,716 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:04:23,716 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:04:23,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:04:23,716 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:04:23,716 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:04:23,716 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:04:23,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:04:23,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:04:23,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:04:23,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:04:23,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:04:23,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:04:23,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:04:23,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:04:23,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:04:23,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:04:23,719 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 -> c0ea593d74670c91cacf864f376c3b9b3ea0d491 [2020-10-20 06:04:23,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:04:23,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:04:23,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:04:23,965 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:04:23,965 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:04:23,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memsetNonZero2.c [2020-10-20 06:04:24,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa4c205c/f1c5a7bec1c1464d951fbe60af552532/FLAGe5c8f3dea [2020-10-20 06:04:24,485 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:04:24,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memsetNonZero2.c [2020-10-20 06:04:24,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa4c205c/f1c5a7bec1c1464d951fbe60af552532/FLAGe5c8f3dea [2020-10-20 06:04:24,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa4c205c/f1c5a7bec1c1464d951fbe60af552532 [2020-10-20 06:04:24,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:04:24,875 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:04:24,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:04:24,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:04:24,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:04:24,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:04:24" (1/1) ... [2020-10-20 06:04:24,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56fa7da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:24, skipping insertion in model container [2020-10-20 06:04:24,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:04:24" (1/1) ... [2020-10-20 06:04:24,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:04:24,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:04:25,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:04:25,161 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:04:25,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:04:25,195 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:04:25,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:25 WrapperNode [2020-10-20 06:04:25,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:04:25,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:04:25,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:04:25,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:04:25,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:25" (1/1) ... [2020-10-20 06:04:25,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:25" (1/1) ... [2020-10-20 06:04:25,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:25" (1/1) ... [2020-10-20 06:04:25,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:25" (1/1) ... [2020-10-20 06:04:25,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:25" (1/1) ... [2020-10-20 06:04:25,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:25" (1/1) ... [2020-10-20 06:04:25,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:25" (1/1) ... [2020-10-20 06:04:25,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:04:25,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:04:25,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:04:25,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:04:25,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:25" (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 06:04:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:04:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:04:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:04:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-10-20 06:04:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-10-20 06:04:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:04:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:04:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-10-20 06:04:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:04:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:04:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:04:25,413 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-20 06:04:25,489 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:04:25,489 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-20 06:04:25,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:04:25 BoogieIcfgContainer [2020-10-20 06:04:25,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:04:25,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:04:25,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:04:25,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:04:25,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:04:24" (1/3) ... [2020-10-20 06:04:25,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bdcea97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:04:25, skipping insertion in model container [2020-10-20 06:04:25,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:04:25" (2/3) ... [2020-10-20 06:04:25,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bdcea97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:04:25, skipping insertion in model container [2020-10-20 06:04:25,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:04:25" (3/3) ... [2020-10-20 06:04:25,500 INFO L111 eAbstractionObserver]: Analyzing ICFG memsetNonZero2.c [2020-10-20 06:04:25,513 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:04:25,520 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 06:04:25,540 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 06:04:25,571 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:04:25,572 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:04:25,572 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:04:25,573 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:04:25,573 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:04:25,573 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:04:25,573 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:04:25,574 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:04:25,593 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-20 06:04:25,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:04:25,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:04:25,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:04:25,608 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:04:25,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:04:25,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2020-10-20 06:04:25,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:04:25,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6723754] [2020-10-20 06:04:25,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:04:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:04:25,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:04:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:04:25,858 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 06:04:25,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6723754] [2020-10-20 06:04:25,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:04:25,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:04:25,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600338131] [2020-10-20 06:04:25,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:04:25,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:04:25,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:04:25,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:04:25,879 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-10-20 06:04:25,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:04:25,947 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-20 06:04:25,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:04:25,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 06:04:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:04:25,959 INFO L225 Difference]: With dead ends: 19 [2020-10-20 06:04:25,959 INFO L226 Difference]: Without dead ends: 16 [2020-10-20 06:04:25,961 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 [2020-10-20 06:04:25,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-20 06:04:25,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-20 06:04:25,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-20 06:04:25,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-20 06:04:25,998 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2020-10-20 06:04:25,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:04:25,999 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-20 06:04:25,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:04:25,999 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-20 06:04:25,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:04:25,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:04:26,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:04:26,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:04:26,000 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:04:26,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:04:26,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2020-10-20 06:04:26,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:04:26,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538537876] [2020-10-20 06:04:26,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:04:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:04:26,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:04:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:04:26,100 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 06:04:26,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538537876] [2020-10-20 06:04:26,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:04:26,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:04:26,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375766409] [2020-10-20 06:04:26,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:04:26,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:04:26,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:04:26,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:04:26,110 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 4 states. [2020-10-20 06:04:26,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:04:26,164 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-10-20 06:04:26,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:04:26,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 06:04:26,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:04:26,167 INFO L225 Difference]: With dead ends: 15 [2020-10-20 06:04:26,168 INFO L226 Difference]: Without dead ends: 15 [2020-10-20 06:04:26,169 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 [2020-10-20 06:04:26,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-20 06:04:26,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-20 06:04:26,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-20 06:04:26,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-20 06:04:26,176 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2020-10-20 06:04:26,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:04:26,177 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-20 06:04:26,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:04:26,178 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-20 06:04:26,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:04:26,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:04:26,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:04:26,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:04:26,182 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:04:26,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:04:26,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1462327129, now seen corresponding path program 1 times [2020-10-20 06:04:26,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:04:26,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28004653] [2020-10-20 06:04:26,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:04:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:04:26,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:04:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:04:26,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:04:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:04:26,294 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 06:04:26,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28004653] [2020-10-20 06:04:26,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:04:26,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:04:26,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424001093] [2020-10-20 06:04:26,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:04:26,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:04:26,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:04:26,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:04:26,297 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2020-10-20 06:04:26,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:04:26,377 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-10-20 06:04:26,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:04:26,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-20 06:04:26,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:04:26,379 INFO L225 Difference]: With dead ends: 18 [2020-10-20 06:04:26,379 INFO L226 Difference]: Without dead ends: 16 [2020-10-20 06:04:26,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:04:26,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-20 06:04:26,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-20 06:04:26,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-20 06:04:26,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-20 06:04:26,385 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-10-20 06:04:26,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:04:26,385 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-20 06:04:26,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:04:26,386 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-20 06:04:26,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 06:04:26,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:04:26,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:04:26,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:04:26,387 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:04:26,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:04:26,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1971150090, now seen corresponding path program 1 times [2020-10-20 06:04:26,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:04:26,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943559707] [2020-10-20 06:04:26,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:04:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:04:26,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:04:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:04:26,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:04:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:04:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:04:26,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943559707] [2020-10-20 06:04:26,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110291343] [2020-10-20 06:04:26,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:04:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:04:26,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:04:26,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:04:26,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:04:26,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:04:26,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2020-10-20 06:04:26,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44916483] [2020-10-20 06:04:26,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:04:26,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:04:26,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:04:26,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:04:26,637 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2020-10-20 06:04:26,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:04:26,730 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-20 06:04:26,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:04:26,731 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-20 06:04:26,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:04:26,732 INFO L225 Difference]: With dead ends: 19 [2020-10-20 06:04:26,732 INFO L226 Difference]: Without dead ends: 17 [2020-10-20 06:04:26,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:04:26,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-20 06:04:26,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-20 06:04:26,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-20 06:04:26,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-20 06:04:26,736 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2020-10-20 06:04:26,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:04:26,737 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-20 06:04:26,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:04:26,737 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-20 06:04:26,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 06:04:26,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:04:26,738 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:04:26,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:04:26,950 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:04:26,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:04:26,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1034761479, now seen corresponding path program 2 times [2020-10-20 06:04:26,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:04:26,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760980147] [2020-10-20 06:04:26,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:04:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:04:26,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:04:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:04:26,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:04:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:04:27,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:04:27,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760980147] [2020-10-20 06:04:27,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769191732] [2020-10-20 06:04:27,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:04:27,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-20 06:04:27,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:04:27,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:04:27,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:04:27,155 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2020-10-20 06:04:27,157 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:04:27,161 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:04:27,162 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:04:27,162 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2020-10-20 06:04:27,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 06:04:27,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:04:27,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2020-10-20 06:04:27,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658832136] [2020-10-20 06:04:27,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:04:27,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:04:27,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:04:27,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:04:27,243 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 6 states. [2020-10-20 06:04:27,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:04:27,300 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-10-20 06:04:27,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:04:27,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-20 06:04:27,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:04:27,302 INFO L225 Difference]: With dead ends: 16 [2020-10-20 06:04:27,302 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:04:27,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:04:27,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:04:27,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:04:27,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:04:27,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:04:27,303 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-20 06:04:27,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:04:27,304 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:04:27,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:04:27,304 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:04:27,304 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:04:27,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:04:27,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:04:27 BoogieIcfgContainer [2020-10-20 06:04:27,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:04:27,516 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:04:27,516 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:04:27,516 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:04:27,516 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:04:25" (3/4) ... [2020-10-20 06:04:27,520 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:04:27,527 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-20 06:04:27,527 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset [2020-10-20 06:04:27,527 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-20 06:04:27,532 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-10-20 06:04:27,532 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-10-20 06:04:27,532 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 06:04:27,532 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 06:04:27,584 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:04:27,585 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:04:27,587 INFO L168 Benchmark]: Toolchain (without parser) took 2716.65 ms. Allocated memory was 35.7 MB in the beginning and 51.4 MB in the end (delta: 15.7 MB). Free memory was 15.9 MB in the beginning and 19.1 MB in the end (delta: -3.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:27,593 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 34.1 MB. Free memory was 10.0 MB in the beginning and 9.9 MB in the end (delta: 45.5 kB). Peak memory consumption was 45.5 kB. Max. memory is 14.3 GB. [2020-10-20 06:04:27,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.57 ms. Allocated memory was 35.7 MB in the beginning and 44.0 MB in the end (delta: 8.4 MB). Free memory was 15.0 MB in the beginning and 26.5 MB in the end (delta: -11.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:27,594 INFO L168 Benchmark]: Boogie Preprocessor took 28.97 ms. Allocated memory is still 44.0 MB. Free memory was 26.5 MB in the beginning and 24.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:27,595 INFO L168 Benchmark]: RCFGBuilder took 265.51 ms. Allocated memory was 44.0 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Free memory was 24.8 MB in the beginning and 24.7 MB in the end (delta: 118.4 kB). Peak memory consumption was 13.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:27,597 INFO L168 Benchmark]: TraceAbstraction took 2023.01 ms. Allocated memory was 45.6 MB in the beginning and 51.4 MB in the end (delta: 5.8 MB). Free memory was 24.2 MB in the beginning and 22.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:27,602 INFO L168 Benchmark]: Witness Printer took 69.42 ms. Allocated memory is still 51.4 MB. Free memory was 22.2 MB in the beginning and 19.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:04:27,612 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 34.1 MB. Free memory was 10.0 MB in the beginning and 9.9 MB in the end (delta: 45.5 kB). Peak memory consumption was 45.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 319.57 ms. Allocated memory was 35.7 MB in the beginning and 44.0 MB in the end (delta: 8.4 MB). Free memory was 15.0 MB in the beginning and 26.5 MB in the end (delta: -11.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 28.97 ms. Allocated memory is still 44.0 MB. Free memory was 26.5 MB in the beginning and 24.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 265.51 ms. Allocated memory was 44.0 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Free memory was 24.8 MB in the beginning and 24.7 MB in the end (delta: 118.4 kB). Peak memory consumption was 13.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2023.01 ms. Allocated memory was 45.6 MB in the beginning and 51.4 MB in the end (delta: 5.8 MB). Free memory was 24.2 MB in the beginning and 22.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. * Witness Printer took 69.42 ms. Allocated memory is still 51.4 MB. Free memory was 22.2 MB in the beginning and 19.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 34 SDslu, 65 SDs, 0 SdLazy, 123 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 90 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 83 ConstructedInterpolants, 8 QuantifiedInterpolants, 3158 SizeOfPredicates, 1 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 3/8 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...