/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-178dd20 [2021-01-07 05:24:02,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:24:02,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:24:02,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:24:02,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:24:02,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:24:02,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:24:02,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:24:03,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:24:03,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:24:03,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:24:03,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:24:03,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:24:03,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:24:03,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:24:03,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:24:03,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:24:03,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:24:03,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:24:03,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:24:03,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:24:03,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:24:03,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:24:03,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:24:03,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:24:03,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:24:03,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:24:03,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:24:03,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:24:03,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:24:03,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:24:03,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:24:03,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:24:03,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:24:03,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:24:03,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:24:03,066 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:24:03,098 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:24:03,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:24:03,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:24:03,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:24:03,101 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:24:03,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:24:03,102 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:24:03,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:24:03,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:24:03,102 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:24:03,103 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:24:03,103 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:24:03,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:24:03,103 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:24:03,104 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:24:03,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:24:03,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:24:03,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:24:03,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:24:03,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:24:03,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:24:03,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:24:03,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:24:03,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:24:03,106 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:24:03,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:24:03,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:24:03,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:24:03,593 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:24:03,594 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:24:03,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memset2_-write.c [2021-01-07 05:24:03,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5b24bd9e5/624adc23e9284185a0d5c4a2151c1d46/FLAGdd27c65bb [2021-01-07 05:24:04,459 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:24:04,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memset2_-write.c [2021-01-07 05:24:04,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5b24bd9e5/624adc23e9284185a0d5c4a2151c1d46/FLAGdd27c65bb [2021-01-07 05:24:04,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5b24bd9e5/624adc23e9284185a0d5c4a2151c1d46 [2021-01-07 05:24:04,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:24:04,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:24:04,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:24:04,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:24:04,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:24:04,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:24:04" (1/1) ... [2021-01-07 05:24:04,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31acb1a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:04, skipping insertion in model container [2021-01-07 05:24:04,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:24:04" (1/1) ... [2021-01-07 05:24:04,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:24:04,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-07 05:24:04,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:24:04,998 INFO L203 MainTranslator]: Completed pre-run [2021-01-07 05:24:05,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:24:05,039 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:24:05,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05 WrapperNode [2021-01-07 05:24:05,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:24:05,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:24:05,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:24:05,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:24:05,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (1/1) ... [2021-01-07 05:24:05,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (1/1) ... [2021-01-07 05:24:05,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:24:05,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:24:05,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:24:05,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:24:05,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (1/1) ... [2021-01-07 05:24:05,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (1/1) ... [2021-01-07 05:24:05,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (1/1) ... [2021-01-07 05:24:05,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (1/1) ... [2021-01-07 05:24:05,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (1/1) ... [2021-01-07 05:24:05,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (1/1) ... [2021-01-07 05:24:05,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (1/1) ... [2021-01-07 05:24:05,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:24:05,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:24:05,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:24:05,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:24:05,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (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 [2021-01-07 05:24:05,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:24:05,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:24:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:24:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:24:05,673 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:24:05,674 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-01-07 05:24:05,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:24:05 BoogieIcfgContainer [2021-01-07 05:24:05,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:24:05,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:24:05,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:24:05,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:24:05,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:24:04" (1/3) ... [2021-01-07 05:24:05,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168822c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:24:05, skipping insertion in model container [2021-01-07 05:24:05,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (2/3) ... [2021-01-07 05:24:05,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168822c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:24:05, skipping insertion in model container [2021-01-07 05:24:05,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:24:05" (3/3) ... [2021-01-07 05:24:05,695 INFO L111 eAbstractionObserver]: Analyzing ICFG memset2_-write.c [2021-01-07 05:24:05,705 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:24:05,713 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-01-07 05:24:05,739 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-01-07 05:24:05,811 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:24:05,811 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:24:05,812 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:24:05,812 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:24:05,812 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:24:05,812 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:24:05,812 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:24:05,812 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:24:05,861 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2021-01-07 05:24:05,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-01-07 05:24:05,870 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:24:05,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-01-07 05:24:05,871 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-01-07 05:24:05,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:24:05,880 INFO L82 PathProgramCache]: Analyzing trace with hash 29856, now seen corresponding path program 1 times [2021-01-07 05:24:05,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:24:05,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140310782] [2021-01-07 05:24:05,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:24:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:24:06,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:24:06,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140310782] [2021-01-07 05:24:06,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:24:06,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:24:06,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806751620] [2021-01-07 05:24:06,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:24:06,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:24:06,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:24:06,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:24:06,230 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2021-01-07 05:24:06,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:24:06,334 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-01-07 05:24:06,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:24:06,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-01-07 05:24:06,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:24:06,350 INFO L225 Difference]: With dead ends: 11 [2021-01-07 05:24:06,350 INFO L226 Difference]: Without dead ends: 9 [2021-01-07 05:24:06,352 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 [2021-01-07 05:24:06,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-01-07 05:24:06,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-01-07 05:24:06,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-01-07 05:24:06,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-01-07 05:24:06,395 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 3 [2021-01-07 05:24:06,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:24:06,395 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-01-07 05:24:06,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:24:06,396 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-01-07 05:24:06,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:24:06,396 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:24:06,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:24:06,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:24:06,397 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-01-07 05:24:06,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:24:06,398 INFO L82 PathProgramCache]: Analyzing trace with hash 925572, now seen corresponding path program 1 times [2021-01-07 05:24:06,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:24:06,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559775458] [2021-01-07 05:24:06,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:24:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-07 05:24:06,420 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-07 05:24:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-07 05:24:06,434 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-07 05:24:06,470 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-07 05:24:06,471 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-07 05:24:06,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:24:06,487 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-01-07 05:24:06,488 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-01-07 05:24:06,489 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-01-07 05:24:06,489 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-01-07 05:24:06,490 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-01-07 05:24:06,490 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-01-07 05:24:06,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.01 05:24:06 BoogieIcfgContainer [2021-01-07 05:24:06,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-07 05:24:06,502 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-07 05:24:06,502 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-07 05:24:06,502 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-07 05:24:06,502 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:24:05" (3/4) ... [2021-01-07 05:24:06,506 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-01-07 05:24:06,508 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-01-07 05:24:06,508 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-01-07 05:24:06,509 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-01-07 05:24:06,509 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-01-07 05:24:06,509 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-01-07 05:24:06,509 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-01-07 05:24:06,553 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/ldv-memsafety/memset2_-write.c-witness.graphml [2021-01-07 05:24:06,554 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-07 05:24:06,557 INFO L168 Benchmark]: Toolchain (without parser) took 1759.80 ms. Allocated memory is still 153.1 MB. Free memory was 128.5 MB in the beginning and 115.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. [2021-01-07 05:24:06,558 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 153.1 MB. Free memory was 127.0 MB in the beginning and 127.0 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:24:06,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.92 ms. Allocated memory is still 153.1 MB. Free memory was 128.2 MB in the beginning and 119.7 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-01-07 05:24:06,560 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.76 ms. Allocated memory is still 153.1 MB. Free memory was 119.7 MB in the beginning and 118.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:24:06,561 INFO L168 Benchmark]: Boogie Preprocessor took 27.78 ms. Allocated memory is still 153.1 MB. Free memory was 118.3 MB in the beginning and 117.4 MB in the end (delta: 910.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:24:06,562 INFO L168 Benchmark]: RCFGBuilder took 560.92 ms. Allocated memory is still 153.1 MB. Free memory was 117.4 MB in the beginning and 106.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-07 05:24:06,563 INFO L168 Benchmark]: TraceAbstraction took 821.44 ms. Allocated memory is still 153.1 MB. Free memory was 106.5 MB in the beginning and 117.2 MB in the end (delta: -10.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:24:06,564 INFO L168 Benchmark]: Witness Printer took 52.23 ms. Allocated memory is still 153.1 MB. Free memory was 117.2 MB in the beginning and 115.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:24:06,569 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 153.1 MB. Free memory was 127.0 MB in the beginning and 127.0 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 239.92 ms. Allocated memory is still 153.1 MB. Free memory was 128.2 MB in the beginning and 119.7 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.76 ms. Allocated memory is still 153.1 MB. Free memory was 119.7 MB in the beginning and 118.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.78 ms. Allocated memory is still 153.1 MB. Free memory was 118.3 MB in the beginning and 117.4 MB in the end (delta: 910.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 560.92 ms. Allocated memory is still 153.1 MB. Free memory was 117.4 MB in the beginning and 106.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 821.44 ms. Allocated memory is still 153.1 MB. Free memory was 106.5 MB in the beginning and 117.2 MB in the end (delta: -10.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 52.23 ms. Allocated memory is still 153.1 MB. Free memory was 117.2 MB in the beginning and 115.7 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: 0.6s, 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, 0.1s 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...