/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-memsafety/memset2_-write.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 17:12:51,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 17:12:51,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 17:12:51,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 17:12:51,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 17:12:51,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 17:12:51,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 17:12:51,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 17:12:51,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 17:12:51,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 17:12:51,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 17:12:51,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 17:12:51,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 17:12:51,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 17:12:51,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 17:12:51,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 17:12:51,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 17:12:51,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 17:12:51,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 17:12:51,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 17:12:51,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 17:12:51,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 17:12:51,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 17:12:51,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 17:12:51,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 17:12:51,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 17:12:51,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 17:12:51,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 17:12:51,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 17:12:51,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 17:12:51,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 17:12:51,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 17:12:51,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 17:12:51,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 17:12:51,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 17:12:51,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 17:12:51,959 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 17:12:52,011 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 17:12:52,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 17:12:52,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 17:12:52,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 17:12:52,014 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 17:12:52,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 17:12:52,014 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 17:12:52,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 17:12:52,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 17:12:52,015 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 17:12:52,016 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 17:12:52,016 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 17:12:52,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 17:12:52,017 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 17:12:52,017 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 17:12:52,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 17:12:52,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 17:12:52,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 17:12:52,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:12:52,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 17:12:52,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 17:12:52,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 17:12:52,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 17:12:52,019 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 17:12:52,020 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 17:12:52,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 17:12:52,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 17:12:52,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 17:12:52,471 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 17:12:52,472 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 17:12:52,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memset2_-write.c [2020-12-23 17:12:52,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7526d0021/599e9176fa8442b0a1932523f22c2a34/FLAGb49db05f7 [2020-12-23 17:12:53,154 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 17:12:53,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memset2_-write.c [2020-12-23 17:12:53,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7526d0021/599e9176fa8442b0a1932523f22c2a34/FLAGb49db05f7 [2020-12-23 17:12:53,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7526d0021/599e9176fa8442b0a1932523f22c2a34 [2020-12-23 17:12:53,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 17:12:53,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 17:12:53,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 17:12:53,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 17:12:53,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 17:12:53,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:12:53" (1/1) ... [2020-12-23 17:12:53,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577615f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:12:53, skipping insertion in model container [2020-12-23 17:12:53,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:12:53" (1/1) ... [2020-12-23 17:12:53,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 17:12:53,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 17:12:53,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:12:53,711 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 17:12:53,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:12:53,744 INFO L208 MainTranslator]: Completed translation [2020-12-23 17:12:53,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:12:53 WrapperNode [2020-12-23 17:12:53,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 17:12:53,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 17:12:53,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 17:12:53,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 17:12:53,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:12:53" (1/1) ... [2020-12-23 17:12:53,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:12:53" (1/1) ... [2020-12-23 17:12:53,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 17:12:53,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 17:12:53,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 17:12:53,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 17:12:53,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:12:53" (1/1) ... [2020-12-23 17:12:53,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:12:53" (1/1) ... [2020-12-23 17:12:53,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:12:53" (1/1) ... [2020-12-23 17:12:53,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:12:53" (1/1) ... [2020-12-23 17:12:53,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:12:53" (1/1) ... [2020-12-23 17:12:53,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:12:53" (1/1) ... [2020-12-23 17:12:53,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:12:53" (1/1) ... [2020-12-23 17:12:53,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 17:12:53,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 17:12:53,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 17:12:53,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 17:12:53,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:12:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:12:53,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 17:12:53,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 17:12:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 17:12:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 17:12:54,157 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 17:12:54,158 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-23 17:12:54,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:12:54 BoogieIcfgContainer [2020-12-23 17:12:54,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 17:12:54,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 17:12:54,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 17:12:54,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 17:12:54,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:12:53" (1/3) ... [2020-12-23 17:12:54,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765bcd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:12:54, skipping insertion in model container [2020-12-23 17:12:54,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:12:53" (2/3) ... [2020-12-23 17:12:54,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765bcd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:12:54, skipping insertion in model container [2020-12-23 17:12:54,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:12:54" (3/3) ... [2020-12-23 17:12:54,170 INFO L111 eAbstractionObserver]: Analyzing ICFG memset2_-write.c [2020-12-23 17:12:54,183 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 17:12:54,191 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-23 17:12:54,238 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-23 17:12:54,289 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 17:12:54,290 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 17:12:54,290 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 17:12:54,293 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 17:12:54,293 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 17:12:54,294 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 17:12:54,294 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 17:12:54,294 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 17:12:54,321 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-12-23 17:12:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-23 17:12:54,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:12:54,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-23 17:12:54,331 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-23 17:12:54,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:12:54,340 INFO L82 PathProgramCache]: Analyzing trace with hash 29856, now seen corresponding path program 1 times [2020-12-23 17:12:54,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:12:54,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126154917] [2020-12-23 17:12:54,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:12:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:12:54,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:12:54,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126154917] [2020-12-23 17:12:54,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:12:54,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:12:54,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803407363] [2020-12-23 17:12:54,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:12:54,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:12:54,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:12:54,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:12:54,625 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-12-23 17:12:54,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:12:54,705 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-12-23 17:12:54,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:12:54,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-23 17:12:54,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:12:54,718 INFO L225 Difference]: With dead ends: 11 [2020-12-23 17:12:54,718 INFO L226 Difference]: Without dead ends: 9 [2020-12-23 17:12:54,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:12:54,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-23 17:12:54,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-23 17:12:54,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-23 17:12:54,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-12-23 17:12:54,752 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 3 [2020-12-23 17:12:54,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:12:54,753 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-12-23 17:12:54,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:12:54,753 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-12-23 17:12:54,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-23 17:12:54,754 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:12:54,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-23 17:12:54,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 17:12:54,754 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2020-12-23 17:12:54,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:12:54,755 INFO L82 PathProgramCache]: Analyzing trace with hash 925572, now seen corresponding path program 1 times [2020-12-23 17:12:54,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:12:54,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497187192] [2020-12-23 17:12:54,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:12:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 17:12:54,773 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 17:12:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 17:12:54,785 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 17:12:54,804 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 17:12:54,804 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 17:12:54,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 17:12:54,817 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-23 17:12:54,818 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-23 17:12:54,818 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-23 17:12:54,818 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-23 17:12:54,819 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-23 17:12:54,819 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-23 17:12:54,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 05:12:54 BoogieIcfgContainer [2020-12-23 17:12:54,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 17:12:54,827 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 17:12:54,828 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 17:12:54,828 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 17:12:54,828 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:12:54" (3/4) ... [2020-12-23 17:12:54,830 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 17:12:54,831 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-23 17:12:54,832 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-23 17:12:54,832 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-23 17:12:54,832 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-23 17:12:54,833 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-23 17:12:54,833 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2020-12-23 17:12:54,866 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/ldv-memsafety/memset2_-write.c-witness.graphml [2020-12-23 17:12:54,866 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 17:12:54,869 INFO L168 Benchmark]: Toolchain (without parser) took 1337.36 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-23 17:12:54,869 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:12:54,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.38 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 117.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-12-23 17:12:54,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.35 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:12:54,872 INFO L168 Benchmark]: Boogie Preprocessor took 21.67 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.8 MB in the end (delta: 830.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:12:54,873 INFO L168 Benchmark]: RCFGBuilder took 354.15 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 104.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 17:12:54,874 INFO L168 Benchmark]: TraceAbstraction took 665.01 ms. Allocated memory is still 151.0 MB. Free memory was 103.6 MB in the beginning and 117.5 MB in the end (delta: -13.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:12:54,874 INFO L168 Benchmark]: Witness Printer took 38.69 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 115.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:12:54,879 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 213.38 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 117.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 36.35 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 21.67 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.8 MB in the end (delta: 830.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 354.15 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 104.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 665.01 ms. Allocated memory is still 151.0 MB. Free memory was 103.6 MB in the beginning and 117.5 MB in the end (delta: -13.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 38.69 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 115.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L21] struct compstat cstats ; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 SDtfs, 5 SDslu, 1 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 incorrect! Received shutdown request...