java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength_false-valid-deref-read.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 11:00:48,277 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 11:00:48,279 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 11:00:48,291 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 11:00:48,291 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 11:00:48,292 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 11:00:48,293 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 11:00:48,295 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 11:00:48,297 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 11:00:48,297 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 11:00:48,298 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 11:00:48,298 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 11:00:48,299 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 11:00:48,300 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 11:00:48,301 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 11:00:48,303 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 11:00:48,305 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 11:00:48,306 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 11:00:48,309 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 11:00:48,310 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 11:00:48,312 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 11:00:48,316 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 11:00:48,317 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 11:00:48,317 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf [2018-02-02 11:00:48,328 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 11:00:48,328 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 11:00:48,329 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 11:00:48,329 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 11:00:48,329 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 11:00:48,330 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 11:00:48,330 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 11:00:48,330 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 11:00:48,330 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 11:00:48,330 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 11:00:48,330 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 11:00:48,330 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 11:00:48,331 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 11:00:48,331 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 11:00:48,331 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 11:00:48,331 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 11:00:48,331 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 11:00:48,331 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 11:00:48,332 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 11:00:48,332 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 11:00:48,332 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 11:00:48,332 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 11:00:48,332 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-02-02 11:00:48,332 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-02-02 11:00:48,332 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-02 11:00:48,365 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 11:00:48,374 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 11:00:48,377 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 11:00:48,379 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 11:00:48,379 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 11:00:48,379 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength_false-valid-deref-read.c [2018-02-02 11:00:48,471 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 11:00:48,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 11:00:48,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 11:00:48,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 11:00:48,479 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 11:00:48,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 11:00:48" (1/1) ... [2018-02-02 11:00:48,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1acfde9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 11:00:48, skipping insertion in model container [2018-02-02 11:00:48,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 11:00:48" (1/1) ... [2018-02-02 11:00:48,495 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 11:00:48,509 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 11:00:48,596 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 11:00:48,606 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 11:00:48,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 11:00:48 WrapperNode [2018-02-02 11:00:48,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 11:00:48,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 11:00:48,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 11:00:48,611 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 11:00:48,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 11:00:48" (1/1) ... [2018-02-02 11:00:48,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 11:00:48" (1/1) ... [2018-02-02 11:00:48,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 11:00:48" (1/1) ... [2018-02-02 11:00:48,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 11:00:48" (1/1) ... [2018-02-02 11:00:48,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 11:00:48" (1/1) ... [2018-02-02 11:00:48,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 11:00:48" (1/1) ... [2018-02-02 11:00:48,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 11:00:48" (1/1) ... [2018-02-02 11:00:48,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 11:00:48,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 11:00:48,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 11:00:48,629 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 11:00:48,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 11:00:48" (1/1) ... No working directory specified, using /home/ultimate/work/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 [2018-02-02 11:00:48,659 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 11:00:48,659 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 11:00:48,659 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-02-02 11:00:48,659 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 11:00:48,659 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 11:00:48,659 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 11:00:48,660 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 11:00:48,660 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 11:00:48,660 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 11:00:48,660 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-02-02 11:00:48,660 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 11:00:48,660 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 11:00:48,660 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 11:00:48,787 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 11:00:48,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 11:00:48 BoogieIcfgContainer [2018-02-02 11:00:48,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 11:00:48,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 11:00:48,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 11:00:48,791 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 11:00:48,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 11:00:48" (1/3) ... [2018-02-02 11:00:48,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61141cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 11:00:48, skipping insertion in model container [2018-02-02 11:00:48,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 11:00:48" (2/3) ... [2018-02-02 11:00:48,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61141cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 11:00:48, skipping insertion in model container [2018-02-02 11:00:48,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 11:00:48" (3/3) ... [2018-02-02 11:00:48,794 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_false-valid-deref-read.c [2018-02-02 11:00:48,801 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-02 11:00:48,807 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2018-02-02 11:00:48,838 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 11:00:48,838 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 11:00:48,838 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-02-02 11:00:48,839 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-02 11:00:48,839 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 11:00:48,839 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 11:00:48,839 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 11:00:48,839 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 11:00:48,840 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 11:00:48,852 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-02-02 11:00:48,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-02 11:00:48,859 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 11:00:48,860 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 11:00:48,860 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 11:00:48,862 INFO L82 PathProgramCache]: Analyzing trace with hash -794867092, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-02 11:00:48,870 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 11:00:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 11:00:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 11:00:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 11:00:48,935 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 11:00:48,935 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 11:00:48,936 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 11:00:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 11:00:48,936 INFO L182 omatonBuilderFactory]: Interpolants [51#true, 52#false, 56#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-02 11:00:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 11:00:48,937 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 11:00:48,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 11:00:48,945 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 11:00:48,946 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 3 states. [2018-02-02 11:00:49,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 11:00:49,051 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2018-02-02 11:00:49,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 11:00:49,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-02-02 11:00:49,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 11:00:49,060 INFO L225 Difference]: With dead ends: 48 [2018-02-02 11:00:49,061 INFO L226 Difference]: Without dead ends: 45 [2018-02-02 11:00:49,062 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 11:00:49,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-02-02 11:00:49,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-02-02 11:00:49,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-02-02 11:00:49,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2018-02-02 11:00:49,093 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 13 [2018-02-02 11:00:49,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 11:00:49,094 INFO L432 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2018-02-02 11:00:49,094 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 11:00:49,094 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2018-02-02 11:00:49,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 11:00:49,095 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 11:00:49,095 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 11:00:49,095 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 11:00:49,095 INFO L82 PathProgramCache]: Analyzing trace with hash 686433396, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-02 11:00:49,100 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 11:00:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 11:00:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 11:00:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 11:00:49,155 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 11:00:49,155 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 11:00:49,155 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 11:00:49,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 11:00:49,156 INFO L182 omatonBuilderFactory]: Interpolants [150#true, 151#false, 155#(< main_~i~1 100), 156#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-02 11:00:49,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 11:00:49,157 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 11:00:49,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 11:00:49,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 11:00:49,157 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 4 states. [2018-02-02 11:00:49,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 11:00:49,253 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-02-02 11:00:49,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 11:00:49,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-02-02 11:00:49,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 11:00:49,260 INFO L225 Difference]: With dead ends: 44 [2018-02-02 11:00:49,260 INFO L226 Difference]: Without dead ends: 44 [2018-02-02 11:00:49,260 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 11:00:49,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-02-02 11:00:49,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-02-02 11:00:49,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-02-02 11:00:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2018-02-02 11:00:49,263 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 14 [2018-02-02 11:00:49,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 11:00:49,263 INFO L432 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2018-02-02 11:00:49,263 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 11:00:49,263 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2018-02-02 11:00:49,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-02 11:00:49,264 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 11:00:49,264 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 11:00:49,264 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 11:00:49,264 INFO L82 PathProgramCache]: Analyzing trace with hash -108375574, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-02 11:00:49,267 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 11:00:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 11:00:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 11:00:49,312 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-02 11:00:49,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 11:00:49 BoogieIcfgContainer [2018-02-02 11:00:49,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 11:00:49,328 INFO L168 Benchmark]: Toolchain (without parser) took 856.51 ms. Allocated memory is still 400.6 MB. Free memory was 357.4 MB in the beginning and 275.7 MB in the end (delta: 81.7 MB). Peak memory consumption was 81.7 MB. Max. memory is 5.3 GB. [2018-02-02 11:00:49,329 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 400.6 MB. Free memory is still 362.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 11:00:49,330 INFO L168 Benchmark]: CACSL2BoogieTranslator took 138.05 ms. Allocated memory is still 400.6 MB. Free memory was 357.4 MB in the beginning and 349.5 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. [2018-02-02 11:00:49,330 INFO L168 Benchmark]: Boogie Preprocessor took 17.96 ms. Allocated memory is still 400.6 MB. Free memory is still 349.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 11:00:49,331 INFO L168 Benchmark]: RCFGBuilder took 158.88 ms. Allocated memory is still 400.6 MB. Free memory was 349.5 MB in the beginning and 330.2 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 5.3 GB. [2018-02-02 11:00:49,331 INFO L168 Benchmark]: TraceAbstraction took 538.61 ms. Allocated memory is still 400.6 MB. Free memory was 330.2 MB in the beginning and 275.7 MB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 5.3 GB. [2018-02-02 11:00:49,333 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 400.6 MB. Free memory is still 362.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 138.05 ms. Allocated memory is still 400.6 MB. Free memory was 357.4 MB in the beginning and 349.5 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 17.96 ms. Allocated memory is still 400.6 MB. Free memory is still 349.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * RCFGBuilder took 158.88 ms. Allocated memory is still 400.6 MB. Free memory was 349.5 MB in the beginning and 330.2 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 538.61 ms. Allocated memory is still 400.6 MB. Free memory was 330.2 MB in the beginning and 275.7 MB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: array index can be out of bounds array index can be out of bounds We found a FailurePath: [L21] int i, b[100]; VAL [b={5:0}] [L22] i = 0 VAL [b={5:0}, i=0] [L22] COND TRUE i < 100 VAL [b={5:0}, i=0] [L23] CALL foo(i, b, i) VAL [\old(n)=0, \old(size)=0, b={5:0}] [L13] int a[n], i; [L14] i = 0 VAL [\old(n)=0, \old(size)=0, b={5:0}, b={5:0}, i=0, n=0, size=0] [L14] COND TRUE i < size + 1 VAL [\old(n)=0, \old(size)=0, b={5:0}, b={5:0}, i=0, n=0, size=0] [L15] a[i] VAL [\old(n)=0, \old(size)=0, b={5:0}, b={5:0}, i=0, n=0, size=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 48 locations, 8 error locations. UNSAFE Result, 0.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 78 SDtfs, 45 SDslu, 11 SDs, 0 SdLazy, 90 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 590 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength_false-valid-deref-read.c_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_11-00-49-339.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength_false-valid-deref-read.c_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_11-00-49-339.csv Received shutdown request...