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_Camel.epf -i ../../../trunk/examples/svcomp/array-memsafety/mult_array_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 08:40:24,945 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 08:40:24,947 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 08:40:24,960 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 08:40:24,961 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 08:40:24,962 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 08:40:24,963 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 08:40:24,964 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 08:40:24,966 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 08:40:24,967 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 08:40:24,968 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 08:40:24,968 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 08:40:24,969 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 08:40:24,970 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 08:40:24,971 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 08:40:24,973 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 08:40:24,975 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 08:40:24,977 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 08:40:24,978 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 08:40:24,979 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 08:40:24,981 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 08:40:24,985 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 08:40:24,986 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 08:40:24,986 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-02-02 08:40:24,997 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 08:40:24,997 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 08:40:24,999 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 08:40:24,999 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 08:40:24,999 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 08:40:25,000 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 08:40:25,000 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 08:40:25,000 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 08:40:25,000 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 08:40:25,001 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 08:40:25,001 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 08:40:25,001 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 08:40:25,001 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 08:40:25,001 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 08:40:25,002 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 08:40:25,002 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 08:40:25,002 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 08:40:25,003 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 08:40:25,003 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 08:40:25,003 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 08:40:25,003 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 08:40:25,004 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 08:40:25,005 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 08:40:25,005 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 08:40:25,005 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-02 08:40:25,042 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 08:40:25,051 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 08:40:25,053 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 08:40:25,054 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 08:40:25,054 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 08:40:25,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/mult_array_unsafe_false-valid-deref.i [2018-02-02 08:40:25,222 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 08:40:25,223 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 08:40:25,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 08:40:25,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 08:40:25,229 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 08:40:25,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 08:40:25" (1/1) ... [2018-02-02 08:40:25,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cb015d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:25, skipping insertion in model container [2018-02-02 08:40:25,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 08:40:25" (1/1) ... [2018-02-02 08:40:25,242 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 08:40:25,271 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 08:40:25,363 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 08:40:25,377 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 08:40:25,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:25 WrapperNode [2018-02-02 08:40:25,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 08:40:25,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 08:40:25,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 08:40:25,384 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 08:40:25,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:25" (1/1) ... [2018-02-02 08:40:25,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:25" (1/1) ... [2018-02-02 08:40:25,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:25" (1/1) ... [2018-02-02 08:40:25,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:25" (1/1) ... [2018-02-02 08:40:25,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:25" (1/1) ... [2018-02-02 08:40:25,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:25" (1/1) ... [2018-02-02 08:40:25,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:25" (1/1) ... [2018-02-02 08:40:25,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 08:40:25,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 08:40:25,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 08:40:25,408 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 08:40:25,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:25" (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 08:40:25,446 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 08:40:25,447 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 08:40:25,447 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 08:40:25,447 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 08:40:25,447 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 08:40:25,447 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 08:40:25,447 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 08:40:25,447 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 08:40:25,447 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 08:40:25,447 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 08:40:25,447 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 08:40:25,447 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 08:40:25,591 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 08:40:25,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 08:40:25 BoogieIcfgContainer [2018-02-02 08:40:25,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 08:40:25,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 08:40:25,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 08:40:25,594 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 08:40:25,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 08:40:25" (1/3) ... [2018-02-02 08:40:25,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fc0d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 08:40:25, skipping insertion in model container [2018-02-02 08:40:25,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:40:25" (2/3) ... [2018-02-02 08:40:25,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fc0d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 08:40:25, skipping insertion in model container [2018-02-02 08:40:25,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 08:40:25" (3/3) ... [2018-02-02 08:40:25,597 INFO L107 eAbstractionObserver]: Analyzing ICFG mult_array_unsafe_false-valid-deref.i [2018-02-02 08:40:25,603 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 08:40:25,609 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-02-02 08:40:25,636 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 08:40:25,637 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 08:40:25,637 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 08:40:25,637 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 08:40:25,637 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 08:40:25,637 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 08:40:25,637 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 08:40:25,637 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 08:40:25,638 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 08:40:25,650 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-02-02 08:40:25,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-02 08:40:25,659 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:40:25,660 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:40:25,660 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:40:25,664 INFO L82 PathProgramCache]: Analyzing trace with hash 83465695, now seen corresponding path program 1 times [2018-02-02 08:40:25,665 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:40:25,665 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:40:25,700 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:40:25,700 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:40:25,700 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:40:25,745 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-02-02 08:40:25,746 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-02-02 08:40:25,746 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-02-02 08:40:25,758 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:40:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:40:25,805 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:40:25,841 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-02-02 08:40:25,842 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:40:25,846 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:40:25,846 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-02-02 08:40:25,877 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-02-02 08:40:25,878 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:40:25,883 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-02-02 08:40:25,883 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2018-02-02 08:40:25,894 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 08:40:25,922 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:40:25,922 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 08:40:25,923 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 08:40:25,931 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 08:40:25,932 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 08:40:25,933 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2018-02-02 08:40:26,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:40:26,041 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-02-02 08:40:26,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 08:40:26,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-02-02 08:40:26,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:40:26,050 INFO L225 Difference]: With dead ends: 44 [2018-02-02 08:40:26,051 INFO L226 Difference]: Without dead ends: 41 [2018-02-02 08:40:26,052 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 08:40:26,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-02-02 08:40:26,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-02-02 08:40:26,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-02-02 08:40:26,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-02-02 08:40:26,077 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 17 [2018-02-02 08:40:26,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:40:26,078 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-02-02 08:40:26,078 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 08:40:26,078 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-02-02 08:40:26,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-02 08:40:26,078 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:40:26,078 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:40:26,078 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:40:26,079 INFO L82 PathProgramCache]: Analyzing trace with hash 83465696, now seen corresponding path program 1 times [2018-02-02 08:40:26,079 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:40:26,079 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:40:26,079 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:40:26,080 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:40:26,080 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:40:26,087 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-02-02 08:40:26,087 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-02-02 08:40:26,087 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-02-02 08:40:26,094 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:40:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 08:40:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 08:40:26,186 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-02 08:40:26,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 08:40:26 BoogieIcfgContainer [2018-02-02 08:40:26,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 08:40:26,207 INFO L168 Benchmark]: Toolchain (without parser) took 984.25 ms. Allocated memory was 404.8 MB in the beginning and 613.9 MB in the end (delta: 209.2 MB). Free memory was 358.8 MB in the beginning and 566.9 MB in the end (delta: -208.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 5.3 GB. [2018-02-02 08:40:26,208 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 404.8 MB. Free memory is still 364.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 08:40:26,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.82 ms. Allocated memory is still 404.8 MB. Free memory was 358.8 MB in the beginning and 348.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-02 08:40:26,209 INFO L168 Benchmark]: Boogie Preprocessor took 23.66 ms. Allocated memory is still 404.8 MB. Free memory was 348.2 MB in the beginning and 345.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-02 08:40:26,210 INFO L168 Benchmark]: RCFGBuilder took 183.32 ms. Allocated memory is still 404.8 MB. Free memory was 345.6 MB in the beginning and 328.4 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 5.3 GB. [2018-02-02 08:40:26,210 INFO L168 Benchmark]: TraceAbstraction took 614.37 ms. Allocated memory was 404.8 MB in the beginning and 613.9 MB in the end (delta: 209.2 MB). Free memory was 328.4 MB in the beginning and 566.9 MB in the end (delta: -238.5 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 08:40:26,213 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 404.8 MB. Free memory is still 364.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 159.82 ms. Allocated memory is still 404.8 MB. Free memory was 358.8 MB in the beginning and 348.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 23.66 ms. Allocated memory is still 404.8 MB. Free memory was 348.2 MB in the beginning and 345.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 183.32 ms. Allocated memory is still 404.8 MB. Free memory was 345.6 MB in the beginning and 328.4 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 614.37 ms. Allocated memory was 404.8 MB in the beginning and 613.9 MB in the end (delta: 209.2 MB). Free memory was 328.4 MB in the beginning and 566.9 MB in the end (delta: -238.5 MB). There was no memory consumed. Max. memory is 5.3 GB. * 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: [L541] int i, j; [L542] int length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 || length >= 2147483647 / sizeof(int) [L543] length = 1 VAL [length=1] [L544] int fac = __VERIFIER_nondet_int(); [L545] COND FALSE !(fac < 1 || fac >= 2147483647 / (sizeof(int) * length)) VAL [fac=536, length=1] [L546] EXPR, FCALL __builtin_alloca (length) VAL [__builtin_alloca (length)={8:0}, fac=536, length=1] [L546] int *arr = __builtin_alloca (length); VAL [__builtin_alloca (length)={8:0}, arr={8:0}, fac=536, length=1] [L547] EXPR, FCALL __builtin_alloca (fac*length) VAL [__builtin_alloca (fac*length)={7:0}, __builtin_alloca (length)={8:0}, arr={8:0}, fac=536, length=1] [L547] int *arr2 = __builtin_alloca (fac*length); VAL [__builtin_alloca (fac*length)={7:0}, __builtin_alloca (length)={8:0}, arr={8:0}, arr2={7:0}, fac=536, length=1] [L548] COND FALSE !(!arr || !arr2) [L549] i=0 VAL [__builtin_alloca (fac*length)={7:0}, __builtin_alloca (length)={8:0}, arr={8:0}, arr2={7:0}, fac=536, i=0, length=1] [L549] COND TRUE i