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-ext2/length_test03_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-04 04:40:33,429 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 04:40:33,431 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 04:40:33,442 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 04:40:33,442 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 04:40:33,443 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 04:40:33,444 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 04:40:33,445 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 04:40:33,447 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 04:40:33,447 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 04:40:33,448 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 04:40:33,449 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 04:40:33,449 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 04:40:33,450 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 04:40:33,451 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 04:40:33,453 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 04:40:33,455 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 04:40:33,457 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 04:40:33,457 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 04:40:33,458 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 04:40:33,461 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-04 04:40:33,461 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-04 04:40:33,461 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-04 04:40:33,462 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-04 04:40:33,463 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-04 04:40:33,464 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-04 04:40:33,464 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-04 04:40:33,464 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-04 04:40:33,464 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-04 04:40:33,465 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 04:40:33,465 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 04:40:33,465 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 04:40:33,475 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 04:40:33,475 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 04:40:33,476 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 04:40:33,476 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 04:40:33,477 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 04:40:33,477 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 04:40:33,477 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 04:40:33,477 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 04:40:33,477 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 04:40:33,477 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 04:40:33,478 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 04:40:33,478 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 04:40:33,478 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 04:40:33,478 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 04:40:33,478 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 04:40:33,478 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 04:40:33,478 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 04:40:33,479 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 04:40:33,479 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 04:40:33,479 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 04:40:33,479 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 04:40:33,479 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 04:40:33,479 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-02-04 04:40:33,479 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-02-04 04:40:33,480 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:40:33,504 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 04:40:33,514 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 04:40:33,517 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 04:40:33,519 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 04:40:33,519 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 04:40:33,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext2/length_test03_true-valid-memsafety.i [2018-02-04 04:40:33,640 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 04:40:33,641 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 04:40:33,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 04:40:33,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 04:40:33,646 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 04:40:33,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:40:33" (1/1) ... [2018-02-04 04:40:33,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fbafac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:40:33, skipping insertion in model container [2018-02-04 04:40:33,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:40:33" (1/1) ... [2018-02-04 04:40:33,662 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:40:33,691 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:40:33,781 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:40:33,795 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:40:33,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:40:33 WrapperNode [2018-02-04 04:40:33,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 04:40:33,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 04:40:33,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 04:40:33,801 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 04:40:33,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:40:33" (1/1) ... [2018-02-04 04:40:33,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:40:33" (1/1) ... [2018-02-04 04:40:33,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:40:33" (1/1) ... [2018-02-04 04:40:33,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:40:33" (1/1) ... [2018-02-04 04:40:33,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:40:33" (1/1) ... [2018-02-04 04:40:33,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:40:33" (1/1) ... [2018-02-04 04:40:33,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:40:33" (1/1) ... [2018-02-04 04:40:33,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 04:40:33,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 04:40:33,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 04:40:33,834 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 04:40:33,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:40:33" (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 04:40:33,880 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 04:40:33,881 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 04:40:33,881 INFO L136 BoogieDeclarations]: Found implementation of procedure append [2018-02-04 04:40:33,881 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 04:40:33,881 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-04 04:40:33,881 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-04 04:40:33,881 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-04 04:40:33,882 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-04 04:40:33,882 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 04:40:33,882 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 04:40:33,882 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 04:40:33,882 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-04 04:40:33,882 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2018-02-04 04:40:33,882 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 04:40:33,882 INFO L128 BoogieDeclarations]: Found specification of procedure append [2018-02-04 04:40:33,883 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 04:40:33,883 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 04:40:33,883 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 04:40:34,309 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 04:40:34,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:40:34 BoogieIcfgContainer [2018-02-04 04:40:34,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 04:40:34,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 04:40:34,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 04:40:34,315 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 04:40:34,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 04:40:33" (1/3) ... [2018-02-04 04:40:34,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1ce20d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:40:34, skipping insertion in model container [2018-02-04 04:40:34,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:40:33" (2/3) ... [2018-02-04 04:40:34,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1ce20d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:40:34, skipping insertion in model container [2018-02-04 04:40:34,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:40:34" (3/3) ... [2018-02-04 04:40:34,318 INFO L107 eAbstractionObserver]: Analyzing ICFG length_test03_true-valid-memsafety.i [2018-02-04 04:40:34,326 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 04:40:34,334 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 55 error locations. [2018-02-04 04:40:34,369 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 04:40:34,370 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 04:40:34,370 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-02-04 04:40:34,370 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 04:40:34,370 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 04:40:34,370 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 04:40:34,370 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 04:40:34,370 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 04:40:34,371 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 04:40:34,386 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2018-02-04 04:40:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-02-04 04:40:34,396 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:40:34,398 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:40:34,398 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr8RequiresViolation, appendErr14RequiresViolation, appendErr5RequiresViolation, appendErr17RequiresViolation, appendErr19RequiresViolation, appendErr22RequiresViolation, appendErr12RequiresViolation, appendErr3RequiresViolation, appendErr16RequiresViolation, appendErr2RequiresViolation, appendErr6RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr23RequiresViolation, appendErr4RequiresViolation, appendErr10RequiresViolation, appendErr20RequiresViolation, appendErr11RequiresViolation, appendErr25RequiresViolation, appendErr7RequiresViolation, appendErr24RequiresViolation, appendErr15RequiresViolation, appendErr1RequiresViolation, appendErr21RequiresViolation, appendErr18RequiresViolation]=== [2018-02-04 04:40:34,402 INFO L82 PathProgramCache]: Analyzing trace with hash -683315734, 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 04:40:34,411 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:40:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:40:34,439 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 04:40:34,451 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:34,451 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:34,453 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:34,453 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:34,491 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 04:40:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:40:34,530 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 04:40:34,562 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:40:34,562 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 04:40:34,563 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:40:34,564 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 04:40:34,564 INFO L182 omatonBuilderFactory]: Interpolants [134#true, 135#false, 139#(exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store |#valid| %1 1) (store %0 %1 1)) :qid itp)) :qid itp)), 140#(= 1 (select |#valid| |main_#t~malloc15.base|)), 141#(= 1 (select |#valid| main_~list~0.base)), 142#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-04 04:40:34,564 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 04:40:34,565 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 04:40:34,575 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 04:40:34,575 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2018-02-04 04:40:34,576 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 6 states. [2018-02-04 04:40:34,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:40:34,914 INFO L93 Difference]: Finished difference Result 161 states and 170 transitions. [2018-02-04 04:40:34,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 04:40:34,916 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2018-02-04 04:40:34,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:40:34,928 INFO L225 Difference]: With dead ends: 161 [2018-02-04 04:40:34,928 INFO L226 Difference]: Without dead ends: 158 [2018-02-04 04:40:34,930 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 04:40:35,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-02-04 04:40:35,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 126. [2018-02-04 04:40:35,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-02-04 04:40:35,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 132 transitions. [2018-02-04 04:40:35,040 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 132 transitions. Word has length 8 [2018-02-04 04:40:35,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:40:35,041 INFO L432 AbstractCegarLoop]: Abstraction has 126 states and 132 transitions. [2018-02-04 04:40:35,041 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 04:40:35,041 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 132 transitions. [2018-02-04 04:40:35,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-02-04 04:40:35,042 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:40:35,042 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:40:35,042 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr8RequiresViolation, appendErr14RequiresViolation, appendErr5RequiresViolation, appendErr17RequiresViolation, appendErr19RequiresViolation, appendErr22RequiresViolation, appendErr12RequiresViolation, appendErr3RequiresViolation, appendErr16RequiresViolation, appendErr2RequiresViolation, appendErr6RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr23RequiresViolation, appendErr4RequiresViolation, appendErr10RequiresViolation, appendErr20RequiresViolation, appendErr11RequiresViolation, appendErr25RequiresViolation, appendErr7RequiresViolation, appendErr24RequiresViolation, appendErr15RequiresViolation, appendErr1RequiresViolation, appendErr21RequiresViolation, appendErr18RequiresViolation]=== [2018-02-04 04:40:35,042 INFO L82 PathProgramCache]: Analyzing trace with hash -683315733, 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 04:40:35,046 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:40:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:40:35,055 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 04:40:35,057 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:35,057 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:35,058 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:35,058 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:35,084 WARN L1033 $PredicateComparison]: unable to prove that (exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store %0 %1 8) (store |c_#length| %1 8)) :qid itp)) :qid itp)) is different from true [2018-02-04 04:40:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:40:35,118 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 04:40:35,148 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:40:35,148 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 04:40:35,148 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:40:35,149 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 04:40:35,149 INFO L182 omatonBuilderFactory]: Interpolants [434#true, 435#false, 439#(exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store %0 %1 8) (store |#length| %1 8)) :qid itp)) :qid itp)), 440#(and (= 8 (select |#length| |main_#t~malloc15.base|)) (= 0 |main_#t~malloc15.offset|)), 441#(and (<= (+ main_~list~0.offset 4) (select |#length| main_~list~0.base)) (<= 0 main_~list~0.offset)), 442#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-04 04:40:35,149 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 04:40:35,151 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 04:40:35,151 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 04:40:35,151 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2018-02-04 04:40:35,151 INFO L87 Difference]: Start difference. First operand 126 states and 132 transitions. Second operand 6 states. [2018-02-04 04:40:35,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:40:35,456 INFO L93 Difference]: Finished difference Result 127 states and 134 transitions. [2018-02-04 04:40:35,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 04:40:35,457 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2018-02-04 04:40:35,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:40:35,458 INFO L225 Difference]: With dead ends: 127 [2018-02-04 04:40:35,458 INFO L226 Difference]: Without dead ends: 127 [2018-02-04 04:40:35,458 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 04:40:35,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-02-04 04:40:35,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2018-02-04 04:40:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-02-04 04:40:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 131 transitions. [2018-02-04 04:40:35,466 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 131 transitions. Word has length 8 [2018-02-04 04:40:35,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:40:35,466 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 131 transitions. [2018-02-04 04:40:35,466 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 04:40:35,466 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 131 transitions. [2018-02-04 04:40:35,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-02-04 04:40:35,467 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:40:35,467 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:40:35,467 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr8RequiresViolation, appendErr14RequiresViolation, appendErr5RequiresViolation, appendErr17RequiresViolation, appendErr19RequiresViolation, appendErr22RequiresViolation, appendErr12RequiresViolation, appendErr3RequiresViolation, appendErr16RequiresViolation, appendErr2RequiresViolation, appendErr6RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr23RequiresViolation, appendErr4RequiresViolation, appendErr10RequiresViolation, appendErr20RequiresViolation, appendErr11RequiresViolation, appendErr25RequiresViolation, appendErr7RequiresViolation, appendErr24RequiresViolation, appendErr15RequiresViolation, appendErr1RequiresViolation, appendErr21RequiresViolation, appendErr18RequiresViolation]=== [2018-02-04 04:40:35,467 INFO L82 PathProgramCache]: Analyzing trace with hash 292048702, 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 04:40:35,469 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:40:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:40:35,476 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 04:40:35,478 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:35,478 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:35,479 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:35,479 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:35,515 WARN L1033 $PredicateComparison]: unable to prove that (exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store %0 %1 8) (store |c_#length| %1 8)) :qid itp)) :qid itp)) is different from true [2018-02-04 04:40:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:40:35,605 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 04:40:35,623 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:40:35,623 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 04:40:35,624 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:40:35,624 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 04:40:35,624 INFO L182 omatonBuilderFactory]: Interpolants [704#(exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store %0 %1 8) (store |#length| %1 8)) :qid itp)) :qid itp)), 705#(and (= 8 (select |#length| |main_#t~malloc15.base|)) (= 0 |main_#t~malloc15.offset|)), 706#(and (<= (+ main_~list~0.offset 8) (select |#length| main_~list~0.base)) (<= 0 (+ main_~list~0.offset 4))), 707#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 699#true, 700#false] [2018-02-04 04:40:35,624 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 04:40:35,625 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 04:40:35,625 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 04:40:35,625 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2018-02-04 04:40:35,625 INFO L87 Difference]: Start difference. First operand 125 states and 131 transitions. Second operand 6 states. [2018-02-04 04:40:35,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:40:35,836 INFO L93 Difference]: Finished difference Result 126 states and 133 transitions. [2018-02-04 04:40:35,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 04:40:35,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-02-04 04:40:35,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:40:35,839 INFO L225 Difference]: With dead ends: 126 [2018-02-04 04:40:35,840 INFO L226 Difference]: Without dead ends: 126 [2018-02-04 04:40:35,840 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=28, Unknown=2, NotChecked=10, Total=56 [2018-02-04 04:40:35,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-02-04 04:40:35,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2018-02-04 04:40:35,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-02-04 04:40:35,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 130 transitions. [2018-02-04 04:40:35,846 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 130 transitions. Word has length 9 [2018-02-04 04:40:35,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:40:35,847 INFO L432 AbstractCegarLoop]: Abstraction has 124 states and 130 transitions. [2018-02-04 04:40:35,847 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 04:40:35,847 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 130 transitions. [2018-02-04 04:40:35,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-02-04 04:40:35,848 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:40:35,848 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:40:35,848 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr8RequiresViolation, appendErr14RequiresViolation, appendErr5RequiresViolation, appendErr17RequiresViolation, appendErr19RequiresViolation, appendErr22RequiresViolation, appendErr12RequiresViolation, appendErr3RequiresViolation, appendErr16RequiresViolation, appendErr2RequiresViolation, appendErr6RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr23RequiresViolation, appendErr4RequiresViolation, appendErr10RequiresViolation, appendErr20RequiresViolation, appendErr11RequiresViolation, appendErr25RequiresViolation, appendErr7RequiresViolation, appendErr24RequiresViolation, appendErr15RequiresViolation, appendErr1RequiresViolation, appendErr21RequiresViolation, appendErr18RequiresViolation]=== [2018-02-04 04:40:35,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1180912018, 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 04:40:35,852 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:40:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:40:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:40:35,880 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 04:40:35,905 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:40:35,906 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 04:40:35,906 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:40:35,906 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 04:40:35,906 INFO L182 omatonBuilderFactory]: Interpolants [962#true, 963#false, 967#(= 1 (select |#valid| |main_#t~malloc18.base|)), 968#(= 1 (select |#valid| main_~list2~0.base)), 969#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-04 04:40:35,906 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 04:40:35,906 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 04:40:35,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 04:40:35,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 04:40:35,907 INFO L87 Difference]: Start difference. First operand 124 states and 130 transitions. Second operand 5 states. [2018-02-04 04:40:36,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:40:36,116 INFO L93 Difference]: Finished difference Result 136 states and 144 transitions. [2018-02-04 04:40:36,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 04:40:36,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-02-04 04:40:36,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:40:36,117 INFO L225 Difference]: With dead ends: 136 [2018-02-04 04:40:36,117 INFO L226 Difference]: Without dead ends: 136 [2018-02-04 04:40:36,118 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-04 04:40:36,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-02-04 04:40:36,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 126. [2018-02-04 04:40:36,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-02-04 04:40:36,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 134 transitions. [2018-02-04 04:40:36,125 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 134 transitions. Word has length 12 [2018-02-04 04:40:36,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:40:36,126 INFO L432 AbstractCegarLoop]: Abstraction has 126 states and 134 transitions. [2018-02-04 04:40:36,126 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 04:40:36,126 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 134 transitions. [2018-02-04 04:40:36,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-02-04 04:40:36,126 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:40:36,126 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:40:36,126 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr8RequiresViolation, appendErr14RequiresViolation, appendErr5RequiresViolation, appendErr17RequiresViolation, appendErr19RequiresViolation, appendErr22RequiresViolation, appendErr12RequiresViolation, appendErr3RequiresViolation, appendErr16RequiresViolation, appendErr2RequiresViolation, appendErr6RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr23RequiresViolation, appendErr4RequiresViolation, appendErr10RequiresViolation, appendErr20RequiresViolation, appendErr11RequiresViolation, appendErr25RequiresViolation, appendErr7RequiresViolation, appendErr24RequiresViolation, appendErr15RequiresViolation, appendErr1RequiresViolation, appendErr21RequiresViolation, appendErr18RequiresViolation]=== [2018-02-04 04:40:36,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1180912017, 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 04:40:36,131 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:40:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:40:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:40:36,167 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 04:40:36,193 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:40:36,193 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 04:40:36,193 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:40:36,193 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 04:40:36,194 INFO L182 omatonBuilderFactory]: Interpolants [1234#true, 1235#false, 1239#(and (= 0 |main_#t~malloc18.offset|) (= 8 (select |#length| |main_#t~malloc18.base|))), 1240#(and (<= 0 main_~list2~0.offset) (<= (+ main_~list2~0.offset 4) (select |#length| main_~list2~0.base))), 1241#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-04 04:40:36,194 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 04:40:36,194 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 04:40:36,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 04:40:36,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 04:40:36,194 INFO L87 Difference]: Start difference. First operand 126 states and 134 transitions. Second operand 5 states. [2018-02-04 04:40:36,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:40:36,359 INFO L93 Difference]: Finished difference Result 127 states and 136 transitions. [2018-02-04 04:40:36,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 04:40:36,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-02-04 04:40:36,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:40:36,360 INFO L225 Difference]: With dead ends: 127 [2018-02-04 04:40:36,360 INFO L226 Difference]: Without dead ends: 127 [2018-02-04 04:40:36,361 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-04 04:40:36,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-02-04 04:40:36,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2018-02-04 04:40:36,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-02-04 04:40:36,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2018-02-04 04:40:36,366 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 12 [2018-02-04 04:40:36,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:40:36,366 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2018-02-04 04:40:36,366 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 04:40:36,367 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2018-02-04 04:40:36,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 04:40:36,367 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:40:36,367 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:40:36,368 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr8RequiresViolation, appendErr14RequiresViolation, appendErr5RequiresViolation, appendErr17RequiresViolation, appendErr19RequiresViolation, appendErr22RequiresViolation, appendErr12RequiresViolation, appendErr3RequiresViolation, appendErr16RequiresViolation, appendErr2RequiresViolation, appendErr6RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr23RequiresViolation, appendErr4RequiresViolation, appendErr10RequiresViolation, appendErr20RequiresViolation, appendErr11RequiresViolation, appendErr25RequiresViolation, appendErr7RequiresViolation, appendErr24RequiresViolation, appendErr15RequiresViolation, appendErr1RequiresViolation, appendErr21RequiresViolation, appendErr18RequiresViolation]=== [2018-02-04 04:40:36,369 INFO L82 PathProgramCache]: Analyzing trace with hash 2046433090, 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 04:40:36,372 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:40:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:40:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:40:36,396 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 04:40:36,412 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:40:36,412 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 04:40:36,412 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:40:36,413 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 04:40:36,413 INFO L182 omatonBuilderFactory]: Interpolants [1496#true, 1497#false, 1501#(and (= 0 |main_#t~malloc18.offset|) (= 8 (select |#length| |main_#t~malloc18.base|))), 1502#(and (<= 0 (+ main_~list2~0.offset 4)) (<= (+ main_~list2~0.offset 8) (select |#length| main_~list2~0.base))), 1503#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-04 04:40:36,413 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 04:40:36,413 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 04:40:36,413 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 04:40:36,413 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 04:40:36,414 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand 5 states. [2018-02-04 04:40:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:40:36,541 INFO L93 Difference]: Finished difference Result 126 states and 135 transitions. [2018-02-04 04:40:36,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 04:40:36,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-02-04 04:40:36,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:40:36,542 INFO L225 Difference]: With dead ends: 126 [2018-02-04 04:40:36,542 INFO L226 Difference]: Without dead ends: 126 [2018-02-04 04:40:36,542 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-04 04:40:36,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-02-04 04:40:36,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2018-02-04 04:40:36,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-02-04 04:40:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 132 transitions. [2018-02-04 04:40:36,547 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 132 transitions. Word has length 13 [2018-02-04 04:40:36,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:40:36,547 INFO L432 AbstractCegarLoop]: Abstraction has 124 states and 132 transitions. [2018-02-04 04:40:36,547 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 04:40:36,547 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 132 transitions. [2018-02-04 04:40:36,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:40:36,548 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:40:36,548 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] [2018-02-04 04:40:36,548 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr8RequiresViolation, appendErr14RequiresViolation, appendErr5RequiresViolation, appendErr17RequiresViolation, appendErr19RequiresViolation, appendErr22RequiresViolation, appendErr12RequiresViolation, appendErr3RequiresViolation, appendErr16RequiresViolation, appendErr2RequiresViolation, appendErr6RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr23RequiresViolation, appendErr4RequiresViolation, appendErr10RequiresViolation, appendErr20RequiresViolation, appendErr11RequiresViolation, appendErr25RequiresViolation, appendErr7RequiresViolation, appendErr24RequiresViolation, appendErr15RequiresViolation, appendErr1RequiresViolation, appendErr21RequiresViolation, appendErr18RequiresViolation]=== [2018-02-04 04:40:36,548 INFO L82 PathProgramCache]: Analyzing trace with hash -424566030, 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 04:40:36,550 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:40:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:40:36,559 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 04:40:36,560 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:36,560 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:36,561 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:36,561 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:36,569 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 04:40:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:40:36,579 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 04:40:36,596 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:40:36,596 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 04:40:36,596 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:40:36,596 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 04:40:36,597 INFO L182 omatonBuilderFactory]: Interpolants [1761#(exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store |#valid| %1 1) (store %0 %1 1)) :qid itp)) :qid itp)), 1762#(= 1 (select |#valid| |append_#t~malloc0.base|)), 1763#(= 1 (select |#valid| append_~node~0.base)), 1764#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 1756#true, 1757#false] [2018-02-04 04:40:36,597 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 04:40:36,597 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 04:40:36,597 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 04:40:36,597 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2018-02-04 04:40:36,597 INFO L87 Difference]: Start difference. First operand 124 states and 132 transitions. Second operand 6 states. [2018-02-04 04:40:36,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:40:36,739 INFO L93 Difference]: Finished difference Result 165 states and 174 transitions. [2018-02-04 04:40:36,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 04:40:36,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-02-04 04:40:36,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:40:36,739 INFO L225 Difference]: With dead ends: 165 [2018-02-04 04:40:36,739 INFO L226 Difference]: Without dead ends: 165 [2018-02-04 04:40:36,740 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 04:40:36,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-02-04 04:40:36,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 144. [2018-02-04 04:40:36,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-02-04 04:40:36,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 174 transitions. [2018-02-04 04:40:36,744 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 174 transitions. Word has length 20 [2018-02-04 04:40:36,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:40:36,744 INFO L432 AbstractCegarLoop]: Abstraction has 144 states and 174 transitions. [2018-02-04 04:40:36,744 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 04:40:36,745 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 174 transitions. [2018-02-04 04:40:36,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:40:36,745 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:40:36,745 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] [2018-02-04 04:40:36,745 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr8RequiresViolation, appendErr14RequiresViolation, appendErr5RequiresViolation, appendErr17RequiresViolation, appendErr19RequiresViolation, appendErr22RequiresViolation, appendErr12RequiresViolation, appendErr3RequiresViolation, appendErr16RequiresViolation, appendErr2RequiresViolation, appendErr6RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr23RequiresViolation, appendErr4RequiresViolation, appendErr10RequiresViolation, appendErr20RequiresViolation, appendErr11RequiresViolation, appendErr25RequiresViolation, appendErr7RequiresViolation, appendErr24RequiresViolation, appendErr15RequiresViolation, appendErr1RequiresViolation, appendErr21RequiresViolation, appendErr18RequiresViolation]=== [2018-02-04 04:40:36,745 INFO L82 PathProgramCache]: Analyzing trace with hash -424566029, 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 04:40:36,749 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:40:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:40:36,779 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 04:40:36,780 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:36,780 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:36,780 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:36,780 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:36,784 WARN L1033 $PredicateComparison]: unable to prove that (exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store |c_#length| %1 9) (store %0 %1 9)) :qid itp)) :qid itp)) is different from true [2018-02-04 04:40:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:40:36,803 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 04:40:36,820 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:40:36,820 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 04:40:36,821 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:40:36,821 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 04:40:36,821 INFO L182 omatonBuilderFactory]: Interpolants [2083#(exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store |#length| %1 9) (store %0 %1 9)) :qid itp)) :qid itp)), 2084#(and (= 9 (select |#length| |append_#t~malloc0.base|)) (= 0 |append_#t~malloc0.offset|)), 2085#(and (<= (+ append_~node~0.offset 1) (select |#length| append_~node~0.base)) (<= 0 append_~node~0.offset)), 2086#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 2078#true, 2079#false] [2018-02-04 04:40:36,821 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 04:40:36,821 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 04:40:36,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 04:40:36,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2018-02-04 04:40:36,822 INFO L87 Difference]: Start difference. First operand 144 states and 174 transitions. Second operand 6 states. [2018-02-04 04:40:36,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:40:36,971 INFO L93 Difference]: Finished difference Result 164 states and 173 transitions. [2018-02-04 04:40:36,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 04:40:36,971 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-02-04 04:40:36,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:40:36,972 INFO L225 Difference]: With dead ends: 164 [2018-02-04 04:40:36,972 INFO L226 Difference]: Without dead ends: 164 [2018-02-04 04:40:36,972 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 04:40:36,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-02-04 04:40:36,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 144. [2018-02-04 04:40:36,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-02-04 04:40:36,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 173 transitions. [2018-02-04 04:40:36,975 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 173 transitions. Word has length 20 [2018-02-04 04:40:36,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:40:36,975 INFO L432 AbstractCegarLoop]: Abstraction has 144 states and 173 transitions. [2018-02-04 04:40:36,975 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 04:40:36,975 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 173 transitions. [2018-02-04 04:40:36,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-04 04:40:36,976 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:40:36,976 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] [2018-02-04 04:40:36,976 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr8RequiresViolation, appendErr14RequiresViolation, appendErr5RequiresViolation, appendErr17RequiresViolation, appendErr19RequiresViolation, appendErr22RequiresViolation, appendErr12RequiresViolation, appendErr3RequiresViolation, appendErr16RequiresViolation, appendErr2RequiresViolation, appendErr6RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr23RequiresViolation, appendErr4RequiresViolation, appendErr10RequiresViolation, appendErr20RequiresViolation, appendErr11RequiresViolation, appendErr25RequiresViolation, appendErr7RequiresViolation, appendErr24RequiresViolation, appendErr15RequiresViolation, appendErr1RequiresViolation, appendErr21RequiresViolation, appendErr18RequiresViolation]=== [2018-02-04 04:40:36,976 INFO L82 PathProgramCache]: Analyzing trace with hash -276644944, 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 04:40:36,978 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:40:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:40:37,008 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier WARNING: array quantifier [2018-02-04 04:40:37,013 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:37,013 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:37,013 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:37,014 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:37,014 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:37,014 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:37,079 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 24 treesize of output 23 [2018-02-04 04:40:37,080 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 04:40:37,081 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 13 treesize of output 12 [2018-02-04 04:40:37,081 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-04 04:40:37,082 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 22 treesize of output 21 [2018-02-04 04:40:37,083 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-02-04 04:40:37,143 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 15 treesize of output 17 [2018-02-04 04:40:37,143 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-02-04 04:40:37,148 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-04 04:40:37,148 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:97, output treesize:8 [2018-02-04 04:40:37,155 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:37,155 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:37,156 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:37,156 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:37,156 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:37,156 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:40:37,220 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 24 treesize of output 23 [2018-02-04 04:40:37,220 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 04:40:37,221 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 13 treesize of output 12 [2018-02-04 04:40:37,222 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-04 04:40:37,223 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 22 treesize of output 21 [2018-02-04 04:40:37,223 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-02-04 04:40:37,248 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 15 treesize of output 17 [2018-02-04 04:40:37,249 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-02-04 04:40:37,253 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-04 04:40:37,253 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:97, output treesize:8 [2018-02-04 04:40:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:40:37,281 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 04:40:37,286 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:40:37,286 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-04 04:40:37,287 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:40:37,287 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 04:40:37,287 INFO L182 omatonBuilderFactory]: Interpolants [2400#false, 2404#(= 1 (select |#valid| main_~list~0.base)), 2405#(forall ((%1 Int)) (= (select (store |#valid| %1 1) |append_#in~head.base|) 1)), 2406#(forall ((v_prenex_5 Int)) (= (select (store |#valid| v_prenex_5 1) append_~head.base) 1)), 2407#(or (not (= (select |#valid| |append_#t~malloc0.base|) 1)) (= (select |#valid| append_~head.base) 1)), 2408#(or (not (= (select |#valid| append_~node~0.base) 1)) (= (select |#valid| append_~head.base) 1)), 2409#(= 1 (select |#valid| append_~head.base)), 2410#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 2399#true] [2018-02-04 04:40:37,287 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 04:40:37,287 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 04:40:37,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 04:40:37,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-02-04 04:40:37,287 INFO L87 Difference]: Start difference. First operand 144 states and 173 transitions. Second operand 9 states. [2018-02-04 04:40:37,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:40:37,651 INFO L93 Difference]: Finished difference Result 185 states and 198 transitions. [2018-02-04 04:40:37,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-04 04:40:37,651 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-02-04 04:40:37,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:40:37,652 INFO L225 Difference]: With dead ends: 185 [2018-02-04 04:40:37,652 INFO L226 Difference]: Without dead ends: 185 [2018-02-04 04:40:37,653 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-02-04 04:40:37,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-02-04 04:40:37,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 141. [2018-02-04 04:40:37,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-02-04 04:40:37,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 165 transitions. [2018-02-04 04:40:37,655 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 165 transitions. Word has length 21 [2018-02-04 04:40:37,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:40:37,655 INFO L432 AbstractCegarLoop]: Abstraction has 141 states and 165 transitions. [2018-02-04 04:40:37,655 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 04:40:37,655 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 165 transitions. [2018-02-04 04:40:37,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-04 04:40:37,656 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:40:37,656 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] [2018-02-04 04:40:37,656 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr8RequiresViolation, appendErr14RequiresViolation, appendErr5RequiresViolation, appendErr17RequiresViolation, appendErr19RequiresViolation, appendErr22RequiresViolation, appendErr12RequiresViolation, appendErr3RequiresViolation, appendErr16RequiresViolation, appendErr2RequiresViolation, appendErr6RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr23RequiresViolation, appendErr4RequiresViolation, appendErr10RequiresViolation, appendErr20RequiresViolation, appendErr11RequiresViolation, appendErr25RequiresViolation, appendErr7RequiresViolation, appendErr24RequiresViolation, appendErr15RequiresViolation, appendErr1RequiresViolation, appendErr21RequiresViolation, appendErr18RequiresViolation]=== [2018-02-04 04:40:37,656 INFO L82 PathProgramCache]: Analyzing trace with hash -276644943, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:40:37,661 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:40:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:40:37,688 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: Unsupported proof rule: (let ((a!1 (= (+ 0 (* (- 1) (select |#length_17| |main_#t~malloc15.base_5|))) (* (- 1) (select |#length_17| |main_#t~malloc15.base_5|))))) (rewrite a!1)) [2018-02-04 04:40:37,689 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 131 column 394: 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:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:196) 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 04:40:37,692 INFO L168 Benchmark]: Toolchain (without parser) took 4050.91 ms. Allocated memory was 405.3 MB in the beginning and 619.2 MB in the end (delta: 213.9 MB). Free memory was 361.9 MB in the beginning and 579.1 MB in the end (delta: -217.2 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:40:37,693 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 405.3 MB. Free memory is still 368.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:40:37,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 158.68 ms. Allocated memory is still 405.3 MB. Free memory was 361.9 MB in the beginning and 351.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 5.3 GB. [2018-02-04 04:40:37,694 INFO L168 Benchmark]: Boogie Preprocessor took 32.42 ms. Allocated memory is still 405.3 MB. Free memory was 351.2 MB in the beginning and 348.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-04 04:40:37,694 INFO L168 Benchmark]: RCFGBuilder took 476.89 ms. Allocated memory is still 405.3 MB. Free memory was 348.5 MB in the beginning and 312.5 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 5.3 GB. [2018-02-04 04:40:37,694 INFO L168 Benchmark]: TraceAbstraction took 3380.26 ms. Allocated memory was 405.3 MB in the beginning and 619.2 MB in the end (delta: 213.9 MB). Free memory was 312.5 MB in the beginning and 579.1 MB in the end (delta: -266.6 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:40:37,696 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 405.3 MB. Free memory is still 368.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 158.68 ms. Allocated memory is still 405.3 MB. Free memory was 361.9 MB in the beginning and 351.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 32.42 ms. Allocated memory is still 405.3 MB. Free memory was 351.2 MB in the beginning and 348.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 476.89 ms. Allocated memory is still 405.3 MB. Free memory was 348.5 MB in the beginning and 312.5 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 3380.26 ms. Allocated memory was 405.3 MB in the beginning and 619.2 MB in the end (delta: 213.9 MB). Free memory was 312.5 MB in the beginning and 579.1 MB in the end (delta: -266.6 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: line 131 column 394: theory not supported by interpolation or bad proof de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: line 131 column 394: 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/length_test03_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_04-40-37-705.csv Received shutdown request...