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/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf -i ../../../trunk/examples/svcomp/memsafety/test-0504_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c17473d-m [2018-02-04 20:34:31,050 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 20:34:31,051 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 20:34:31,061 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 20:34:31,061 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 20:34:31,062 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 20:34:31,063 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 20:34:31,064 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 20:34:31,066 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 20:34:31,067 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 20:34:31,068 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 20:34:31,068 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 20:34:31,069 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 20:34:31,070 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 20:34:31,071 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 20:34:31,073 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 20:34:31,074 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 20:34:31,076 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 20:34:31,077 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 20:34:31,078 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 20:34:31,080 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-04 20:34:31,080 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-04 20:34:31,080 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-04 20:34:31,081 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-04 20:34:31,082 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-04 20:34:31,083 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-04 20:34:31,083 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-04 20:34:31,084 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-04 20:34:31,084 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-04 20:34:31,084 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 20:34:31,085 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 20:34:31,085 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf [2018-02-04 20:34:31,095 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 20:34:31,095 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 20:34:31,096 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 20:34:31,096 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 20:34:31,096 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 20:34:31,096 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 20:34:31,097 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 20:34:31,097 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 20:34:31,097 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 20:34:31,097 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 20:34:31,097 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 20:34:31,097 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 20:34:31,097 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 20:34:31,098 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 20:34:31,098 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 20:34:31,098 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 20:34:31,098 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 20:34:31,098 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 20:34:31,098 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 20:34:31,099 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 20:34:31,099 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 20:34:31,099 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-02-04 20:34:31,099 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-02-04 20:34:31,099 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 20:34:31,127 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 20:34:31,135 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 20:34:31,139 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 20:34:31,140 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 20:34:31,140 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 20:34:31,141 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0504_true-valid-memsafety.i [2018-02-04 20:34:31,293 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 20:34:31,295 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 20:34:31,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 20:34:31,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 20:34:31,302 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 20:34:31,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 08:34:31" (1/1) ... [2018-02-04 20:34:31,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@136db55d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:34:31, skipping insertion in model container [2018-02-04 20:34:31,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 08:34:31" (1/1) ... [2018-02-04 20:34:31,320 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 20:34:31,353 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 20:34:31,446 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 20:34:31,463 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 20:34:31,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:34:31 WrapperNode [2018-02-04 20:34:31,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 20:34:31,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 20:34:31,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 20:34:31,471 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 20:34:31,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:34:31" (1/1) ... [2018-02-04 20:34:31,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:34:31" (1/1) ... [2018-02-04 20:34:31,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:34:31" (1/1) ... [2018-02-04 20:34:31,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:34:31" (1/1) ... [2018-02-04 20:34:31,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:34:31" (1/1) ... [2018-02-04 20:34:31,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:34:31" (1/1) ... [2018-02-04 20:34:31,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:34:31" (1/1) ... [2018-02-04 20:34:31,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 20:34:31,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 20:34:31,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 20:34:31,503 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 20:34:31,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:34:31" (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 [2018-02-04 20:34:31,544 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 20:34:31,544 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 20:34:31,544 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 20:34:31,544 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-04 20:34:31,544 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-04 20:34:31,545 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-04 20:34:31,545 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-04 20:34:31,545 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 20:34:31,545 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 20:34:31,545 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 20:34:31,545 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 20:34:31,545 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-04 20:34:31,545 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-02-04 20:34:31,546 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 20:34:31,546 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 20:34:31,546 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 20:34:31,546 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 20:34:31,800 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 20:34:31,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 08:34:31 BoogieIcfgContainer [2018-02-04 20:34:31,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 20:34:31,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 20:34:31,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 20:34:31,802 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 20:34:31,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 08:34:31" (1/3) ... [2018-02-04 20:34:31,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ac9e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 08:34:31, skipping insertion in model container [2018-02-04 20:34:31,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:34:31" (2/3) ... [2018-02-04 20:34:31,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ac9e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 08:34:31, skipping insertion in model container [2018-02-04 20:34:31,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 08:34:31" (3/3) ... [2018-02-04 20:34:31,806 INFO L107 eAbstractionObserver]: Analyzing ICFG test-0504_true-valid-memsafety.i [2018-02-04 20:34:31,812 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 20:34:31,817 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 39 error locations. [2018-02-04 20:34:31,843 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 20:34:31,843 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 20:34:31,844 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-02-04 20:34:31,844 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 20:34:31,844 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 20:34:31,844 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 20:34:31,844 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 20:34:31,844 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 20:34:31,845 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 20:34:31,857 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2018-02-04 20:34:31,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-02-04 20:34:31,866 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:34:31,867 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:34:31,867 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-04 20:34:31,871 INFO L82 PathProgramCache]: Analyzing trace with hash 23857872, 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 [2018-02-04 20:34:31,882 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:34:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:34:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:34:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:31,956 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:34:31,956 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-04 20:34:31,957 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:34:31,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:31,958 INFO L182 omatonBuilderFactory]: Interpolants [97#true, 98#false, 102#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-04 20:34:31,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:31,959 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 20:34:31,966 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 20:34:31,967 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 20:34:31,968 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 3 states. [2018-02-04 20:34:32,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:34:32,161 INFO L93 Difference]: Finished difference Result 122 states and 129 transitions. [2018-02-04 20:34:32,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 20:34:32,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-02-04 20:34:32,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:34:32,169 INFO L225 Difference]: With dead ends: 122 [2018-02-04 20:34:32,169 INFO L226 Difference]: Without dead ends: 117 [2018-02-04 20:34:32,171 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 [2018-02-04 20:34:32,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-02-04 20:34:32,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 96. [2018-02-04 20:34:32,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-02-04 20:34:32,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 101 transitions. [2018-02-04 20:34:32,198 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 101 transitions. Word has length 10 [2018-02-04 20:34:32,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:34:32,199 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 101 transitions. [2018-02-04 20:34:32,199 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 20:34:32,199 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 101 transitions. [2018-02-04 20:34:32,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-02-04 20:34:32,199 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:34:32,199 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:34:32,199 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-04 20:34:32,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1271008375, 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 [2018-02-04 20:34:32,202 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:34:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:34:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:34:32,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:32,321 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:34:32,321 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 20:34:32,321 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:34:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:32,322 INFO L182 omatonBuilderFactory]: Interpolants [321#true, 322#false, 326#(and (= main_~first~0.offset 0) (= main_~first~0.base 0)), 327#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-04 20:34:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:32,323 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-04 20:34:32,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-04 20:34:32,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-04 20:34:32,324 INFO L87 Difference]: Start difference. First operand 96 states and 101 transitions. Second operand 4 states. [2018-02-04 20:34:32,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:34:32,464 INFO L93 Difference]: Finished difference Result 146 states and 151 transitions. [2018-02-04 20:34:32,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 20:34:32,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-02-04 20:34:32,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:34:32,465 INFO L225 Difference]: With dead ends: 146 [2018-02-04 20:34:32,465 INFO L226 Difference]: Without dead ends: 144 [2018-02-04 20:34:32,466 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-04 20:34:32,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-02-04 20:34:32,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 120. [2018-02-04 20:34:32,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-02-04 20:34:32,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2018-02-04 20:34:32,471 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 12 [2018-02-04 20:34:32,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:34:32,471 INFO L432 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2018-02-04 20:34:32,471 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-04 20:34:32,471 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2018-02-04 20:34:32,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 20:34:32,472 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:34:32,472 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:34:32,472 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-04 20:34:32,472 INFO L82 PathProgramCache]: Analyzing trace with hash -747420669, 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 [2018-02-04 20:34:32,475 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:34:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:34:32,483 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 20:34:32,487 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:34:32,487 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:34:32,488 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:34:32,488 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:34:32,528 WARN L1033 $PredicateComparison]: unable to prove that (exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store |c_#valid| %1 1) (store %0 %1 1)) :qid itp)) :qid itp)) is different from true [2018-02-04 20:34:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:34:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:32,562 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:34:32,562 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 20:34:32,562 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:34:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:32,562 INFO L182 omatonBuilderFactory]: Interpolants [596#true, 597#false, 601#(exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store |#valid| %1 1) (store %0 %1 1)) :qid itp)) :qid itp)), 602#(= 1 (select |#valid| |main_#t~malloc1.base|)), 603#(= 1 (select |#valid| main_~x~0.base)), 604#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-04 20:34:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:32,563 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 20:34:32,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 20:34:32,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2018-02-04 20:34:32,563 INFO L87 Difference]: Start difference. First operand 120 states and 149 transitions. Second operand 6 states. [2018-02-04 20:34:32,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:34:32,775 INFO L93 Difference]: Finished difference Result 137 states and 160 transitions. [2018-02-04 20:34:32,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 20:34:32,776 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-02-04 20:34:32,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:34:32,777 INFO L225 Difference]: With dead ends: 137 [2018-02-04 20:34:32,777 INFO L226 Difference]: Without dead ends: 137 [2018-02-04 20:34:32,777 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=28, Unknown=2, NotChecked=10, Total=56 [2018-02-04 20:34:32,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-02-04 20:34:32,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 112. [2018-02-04 20:34:32,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-02-04 20:34:32,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 134 transitions. [2018-02-04 20:34:32,783 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 134 transitions. Word has length 13 [2018-02-04 20:34:32,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:34:32,784 INFO L432 AbstractCegarLoop]: Abstraction has 112 states and 134 transitions. [2018-02-04 20:34:32,784 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 20:34:32,784 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 134 transitions. [2018-02-04 20:34:32,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 20:34:32,784 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:34:32,784 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:34:32,785 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-04 20:34:32,785 INFO L82 PathProgramCache]: Analyzing trace with hash -747420668, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 20:34:32,788 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:34:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:34:32,799 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 20:34:32,803 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:34:32,803 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:34:32,803 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:34:32,804 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:34:32,809 WARN L1033 $PredicateComparison]: unable to prove that (exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store |c_#length| %1 20) (store %0 %1 20)) :qid itp)) :qid itp)) is different from true [2018-02-04 20:34:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:34:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:32,864 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:34:32,864 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 20:34:32,865 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:34:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:32,865 INFO L182 omatonBuilderFactory]: Interpolants [864#(and (= 20 (select |#length| |main_#t~malloc1.base|)) (= 0 |main_#t~malloc1.offset|)), 865#(and (<= 0 (+ main_~x~0.offset 12)) (<= (+ main_~x~0.offset 16) (select |#length| main_~x~0.base))), 866#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 858#true, 859#false, 863#(exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store |#length| %1 20) (store %0 %1 20)) :qid itp)) :qid itp))] [2018-02-04 20:34:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:32,865 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 20:34:32,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 20:34:32,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2018-02-04 20:34:32,866 INFO L87 Difference]: Start difference. First operand 112 states and 134 transitions. Second operand 6 states. [2018-02-04 20:34:33,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:34:33,057 INFO L93 Difference]: Finished difference Result 156 states and 182 transitions. [2018-02-04 20:34:33,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 20:34:33,058 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-02-04 20:34:33,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:34:33,059 INFO L225 Difference]: With dead ends: 156 [2018-02-04 20:34:33,059 INFO L226 Difference]: Without dead ends: 156 [2018-02-04 20:34:33,059 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=27, Unknown=3, NotChecked=10, Total=56 [2018-02-04 20:34:33,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-02-04 20:34:33,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 111. [2018-02-04 20:34:33,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-02-04 20:34:33,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 132 transitions. [2018-02-04 20:34:33,065 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 132 transitions. Word has length 13 [2018-02-04 20:34:33,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:34:33,065 INFO L432 AbstractCegarLoop]: Abstraction has 111 states and 132 transitions. [2018-02-04 20:34:33,065 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 20:34:33,065 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 132 transitions. [2018-02-04 20:34:33,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-04 20:34:33,065 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:34:33,066 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:34:33,066 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-04 20:34:33,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1695204265, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 20:34:33,068 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:34:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:34:33,076 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 20:34:33,079 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:34:33,079 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:34:33,080 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:34:33,080 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:34:33,096 WARN L1033 $PredicateComparison]: unable to prove that (exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store |c_#length| %1 20) (store %0 %1 20)) :qid itp)) :qid itp)) is different from true [2018-02-04 20:34:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:34:33,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:33,133 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:34:33,133 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 20:34:33,133 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:34:33,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:33,133 INFO L182 omatonBuilderFactory]: Interpolants [1138#true, 1139#false, 1143#(exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store |#length| %1 20) (store %0 %1 20)) :qid itp)) :qid itp)), 1144#(and (= 20 (select |#length| |main_#t~malloc1.base|)) (= 0 |main_#t~malloc1.offset|)), 1145#(and (<= (+ main_~x~0.offset 20) (select |#length| main_~x~0.base)) (<= 0 (+ main_~x~0.offset 16))), 1146#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-04 20:34:33,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:33,133 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 20:34:33,133 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 20:34:33,133 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2018-02-04 20:34:33,134 INFO L87 Difference]: Start difference. First operand 111 states and 132 transitions. Second operand 6 states. [2018-02-04 20:34:33,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:34:33,297 INFO L93 Difference]: Finished difference Result 183 states and 210 transitions. [2018-02-04 20:34:33,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 20:34:33,297 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-02-04 20:34:33,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:34:33,298 INFO L225 Difference]: With dead ends: 183 [2018-02-04 20:34:33,298 INFO L226 Difference]: Without dead ends: 183 [2018-02-04 20:34:33,298 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=28, Unknown=2, NotChecked=10, Total=56 [2018-02-04 20:34:33,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-02-04 20:34:33,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 116. [2018-02-04 20:34:33,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-02-04 20:34:33,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 140 transitions. [2018-02-04 20:34:33,305 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 140 transitions. Word has length 14 [2018-02-04 20:34:33,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:34:33,305 INFO L432 AbstractCegarLoop]: Abstraction has 116 states and 140 transitions. [2018-02-04 20:34:33,305 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 20:34:33,305 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 140 transitions. [2018-02-04 20:34:33,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-04 20:34:33,306 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:34:33,306 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:34:33,306 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-04 20:34:33,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1011724697, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 20:34:33,308 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:34:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:34:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:34:33,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:33,362 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:34:33,362 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 20:34:33,362 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:34:33,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:33,362 INFO L182 omatonBuilderFactory]: Interpolants [1456#(or (< (select |#length| main_~x~0.base) (+ main_~x~0.offset 16)) (<= 0 main_~x~0.offset)), 1457#(and (<= (+ main_~x~0.offset 4) (select |#length| main_~x~0.base)) (<= 0 main_~x~0.offset)), 1458#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 1450#true, 1451#false, 1455#(= 0 |main_#t~malloc1.offset|)] [2018-02-04 20:34:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:33,363 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 20:34:33,363 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 20:34:33,363 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-02-04 20:34:33,363 INFO L87 Difference]: Start difference. First operand 116 states and 140 transitions. Second operand 6 states. [2018-02-04 20:34:33,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:34:33,493 INFO L93 Difference]: Finished difference Result 114 states and 136 transitions. [2018-02-04 20:34:33,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 20:34:33,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-02-04 20:34:33,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:34:33,495 INFO L225 Difference]: With dead ends: 114 [2018-02-04 20:34:33,495 INFO L226 Difference]: Without dead ends: 114 [2018-02-04 20:34:33,495 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-02-04 20:34:33,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-02-04 20:34:33,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-02-04 20:34:33,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-02-04 20:34:33,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 136 transitions. [2018-02-04 20:34:33,501 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 136 transitions. Word has length 15 [2018-02-04 20:34:33,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:34:33,501 INFO L432 AbstractCegarLoop]: Abstraction has 114 states and 136 transitions. [2018-02-04 20:34:33,501 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 20:34:33,501 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 136 transitions. [2018-02-04 20:34:33,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-02-04 20:34:33,502 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:34:33,502 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:34:33,502 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-04 20:34:33,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1298694566, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 20:34:33,514 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:34:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:34:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:34:33,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:33,580 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:34:33,580 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 20:34:33,580 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:34:33,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:33,580 INFO L182 omatonBuilderFactory]: Interpolants [1697#(= 0 |main_#t~malloc1.offset|), 1698#(or (< (select |#length| main_~x~0.base) (+ main_~x~0.offset 16)) (<= 0 (+ main_~x~0.offset 4))), 1699#(and (<= (+ main_~x~0.offset 8) (select |#length| main_~x~0.base)) (<= 0 (+ main_~x~0.offset 4))), 1700#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 1692#true, 1693#false] [2018-02-04 20:34:33,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:33,581 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 20:34:33,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 20:34:33,581 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-02-04 20:34:33,581 INFO L87 Difference]: Start difference. First operand 114 states and 136 transitions. Second operand 6 states. [2018-02-04 20:34:33,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:34:33,693 INFO L93 Difference]: Finished difference Result 158 states and 181 transitions. [2018-02-04 20:34:33,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 20:34:33,694 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-02-04 20:34:33,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:34:33,694 INFO L225 Difference]: With dead ends: 158 [2018-02-04 20:34:33,694 INFO L226 Difference]: Without dead ends: 158 [2018-02-04 20:34:33,695 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-02-04 20:34:33,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-02-04 20:34:33,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 113. [2018-02-04 20:34:33,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-02-04 20:34:33,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 134 transitions. [2018-02-04 20:34:33,697 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 134 transitions. Word has length 16 [2018-02-04 20:34:33,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:34:33,697 INFO L432 AbstractCegarLoop]: Abstraction has 113 states and 134 transitions. [2018-02-04 20:34:33,697 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 20:34:33,697 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 134 transitions. [2018-02-04 20:34:33,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-04 20:34:33,698 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:34:33,698 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:34:33,698 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-04 20:34:33,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1604825910, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 20:34:33,704 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:34:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:34:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:34:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:33,767 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:34:33,767 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 20:34:33,768 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:34:33,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:33,768 INFO L182 omatonBuilderFactory]: Interpolants [1984#(or (< (select |#length| main_~x~0.base) (+ main_~x~0.offset 16)) (<= 0 (+ main_~x~0.offset 8))), 1985#(and (<= (+ main_~x~0.offset 12) (select |#length| main_~x~0.base)) (<= 0 (+ main_~x~0.offset 8))), 1986#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 1978#true, 1979#false, 1983#(= 0 |main_#t~malloc1.offset|)] [2018-02-04 20:34:33,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:34:33,768 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 20:34:33,768 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 20:34:33,769 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-02-04 20:34:33,769 INFO L87 Difference]: Start difference. First operand 113 states and 134 transitions. Second operand 6 states. [2018-02-04 20:34:33,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:34:33,890 INFO L93 Difference]: Finished difference Result 157 states and 179 transitions. [2018-02-04 20:34:33,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 20:34:33,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-02-04 20:34:33,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:34:33,891 INFO L225 Difference]: With dead ends: 157 [2018-02-04 20:34:33,891 INFO L226 Difference]: Without dead ends: 157 [2018-02-04 20:34:33,891 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-02-04 20:34:33,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-02-04 20:34:33,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 112. [2018-02-04 20:34:33,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-02-04 20:34:33,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 132 transitions. [2018-02-04 20:34:33,895 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 132 transitions. Word has length 17 [2018-02-04 20:34:33,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:34:33,895 INFO L432 AbstractCegarLoop]: Abstraction has 112 states and 132 transitions. [2018-02-04 20:34:33,895 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 20:34:33,896 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 132 transitions. [2018-02-04 20:34:33,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-04 20:34:33,896 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:34:33,896 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:34:33,896 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr38EnsuresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-04 20:34:33,896 INFO L82 PathProgramCache]: Analyzing trace with hash 2050240790, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 20:34:33,899 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:34:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:34:33,940 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: Unsupported proof rule: (let ((a!1 (= (+ 0 (* (- 1) (select |#length_21| |main_#t~malloc1.base_9|))) (* (- 1) (select |#length_21| |main_#t~malloc1.base_9|))))) (rewrite a!1)) [2018-02-04 20:34:33,941 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 117 column 353: theory not supported by interpolation or bad proof at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1420) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseInterpolants(Executor.java:255) at de.uni_freiburg.informatik.ultimate.smtsolver.external.ScriptorWithGetInterpolants.readInterpolants(ScriptorWithGetInterpolants.java:136) at de.uni_freiburg.informatik.ultimate.smtsolver.external.ScriptorWithGetInterpolants.getInterpolants(ScriptorWithGetInterpolants.java:64) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.getInterpolants(DiffWrapperScript.java:260) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:186) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:298) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.FixedTraceAbstractionRefinementStrategy.getTraceCheck(FixedTraceAbstractionRefinementStrategy.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:397) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-02-04 20:34:33,944 INFO L168 Benchmark]: Toolchain (without parser) took 2649.79 ms. Allocated memory was 398.5 MB in the beginning and 622.9 MB in the end (delta: 224.4 MB). Free memory was 355.1 MB in the beginning and 473.0 MB in the end (delta: -117.9 MB). Peak memory consumption was 106.5 MB. Max. memory is 5.3 GB. [2018-02-04 20:34:33,945 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 398.5 MB. Free memory is still 361.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 20:34:33,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.94 ms. Allocated memory is still 398.5 MB. Free memory was 355.1 MB in the beginning and 344.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-04 20:34:33,946 INFO L168 Benchmark]: Boogie Preprocessor took 31.73 ms. Allocated memory is still 398.5 MB. Free memory was 344.6 MB in the beginning and 341.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-04 20:34:33,946 INFO L168 Benchmark]: RCFGBuilder took 297.64 ms. Allocated memory is still 398.5 MB. Free memory was 341.9 MB in the beginning and 312.4 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 5.3 GB. [2018-02-04 20:34:33,946 INFO L168 Benchmark]: TraceAbstraction took 2142.42 ms. Allocated memory was 398.5 MB in the beginning and 622.9 MB in the end (delta: 224.4 MB). Free memory was 312.4 MB in the beginning and 473.0 MB in the end (delta: -160.6 MB). Peak memory consumption was 63.8 MB. Max. memory is 5.3 GB. [2018-02-04 20:34:33,949 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 398.5 MB. Free memory is still 361.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 174.94 ms. Allocated memory is still 398.5 MB. Free memory was 355.1 MB in the beginning and 344.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.73 ms. Allocated memory is still 398.5 MB. Free memory was 344.6 MB in the beginning and 341.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 297.64 ms. Allocated memory is still 398.5 MB. Free memory was 341.9 MB in the beginning and 312.4 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2142.42 ms. Allocated memory was 398.5 MB in the beginning and 622.9 MB in the end (delta: 224.4 MB). Free memory was 312.4 MB in the beginning and 473.0 MB in the end (delta: -160.6 MB). Peak memory consumption was 63.8 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: line 117 column 353: theory not supported by interpolation or bad proof de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: line 117 column 353: theory not supported by interpolation or bad proof: de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1420) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0504_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_20-34-33-956.csv Received shutdown request...