java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrncmp-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 09:50:07,148 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 09:50:07,149 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 09:50:07,163 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 09:50:07,163 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 09:50:07,164 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 09:50:07,165 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 09:50:07,166 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 09:50:07,168 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 09:50:07,169 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 09:50:07,170 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 09:50:07,170 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 09:50:07,171 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 09:50:07,172 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 09:50:07,172 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 09:50:07,174 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 09:50:07,176 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 09:50:07,177 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 09:50:07,178 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 09:50:07,179 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 09:50:07,181 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 09:50:07,186 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf [2018-02-02 09:50:07,195 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 09:50:07,196 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 09:50:07,197 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 09:50:07,197 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 09:50:07,197 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 09:50:07,197 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 09:50:07,198 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 09:50:07,198 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 09:50:07,198 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 09:50:07,198 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 09:50:07,198 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 09:50:07,198 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 09:50:07,198 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 09:50:07,199 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 09:50:07,199 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 09:50:07,199 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 09:50:07,199 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 09:50:07,199 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 09:50:07,199 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 09:50:07,199 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 09:50:07,200 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 09:50:07,200 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 09:50:07,200 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-02-02 09:50:07,230 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 09:50:07,241 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 09:50:07,245 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 09:50:07,247 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 09:50:07,247 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 09:50:07,248 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrncmp-alloca_true-valid-memsafety_true-termination.i [2018-02-02 09:50:07,369 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 09:50:07,370 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 09:50:07,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 09:50:07,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 09:50:07,375 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 09:50:07,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:50:07" (1/1) ... [2018-02-02 09:50:07,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc5225c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:50:07, skipping insertion in model container [2018-02-02 09:50:07,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:50:07" (1/1) ... [2018-02-02 09:50:07,392 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 09:50:07,418 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 09:50:07,511 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 09:50:07,524 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 09:50:07,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:50:07 WrapperNode [2018-02-02 09:50:07,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 09:50:07,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 09:50:07,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 09:50:07,530 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 09:50:07,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:50:07" (1/1) ... [2018-02-02 09:50:07,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:50:07" (1/1) ... [2018-02-02 09:50:07,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:50:07" (1/1) ... [2018-02-02 09:50:07,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:50:07" (1/1) ... [2018-02-02 09:50:07,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:50:07" (1/1) ... [2018-02-02 09:50:07,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:50:07" (1/1) ... [2018-02-02 09:50:07,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:50:07" (1/1) ... [2018-02-02 09:50:07,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 09:50:07,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 09:50:07,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 09:50:07,559 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 09:50:07,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:50:07" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 09:50:07,594 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 09:50:07,594 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 09:50:07,594 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncmp [2018-02-02 09:50:07,594 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 09:50:07,594 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 09:50:07,594 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 09:50:07,595 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 09:50:07,595 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 09:50:07,595 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 09:50:07,595 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 09:50:07,595 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncmp [2018-02-02 09:50:07,595 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 09:50:07,595 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 09:50:07,595 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 09:50:07,765 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 09:50:07,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:50:07 BoogieIcfgContainer [2018-02-02 09:50:07,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 09:50:07,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 09:50:07,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 09:50:07,767 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 09:50:07,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:50:07" (1/3) ... [2018-02-02 09:50:07,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@249793f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:50:07, skipping insertion in model container [2018-02-02 09:50:07,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:50:07" (2/3) ... [2018-02-02 09:50:07,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@249793f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:50:07, skipping insertion in model container [2018-02-02 09:50:07,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:50:07" (3/3) ... [2018-02-02 09:50:07,769 INFO L107 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncmp-alloca_true-valid-memsafety_true-termination.i [2018-02-02 09:50:07,775 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-02 09:50:07,780 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-02-02 09:50:07,801 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 09:50:07,802 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 09:50:07,802 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-02-02 09:50:07,802 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-02 09:50:07,802 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 09:50:07,802 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 09:50:07,802 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 09:50:07,803 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 09:50:07,803 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 09:50:07,815 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-02-02 09:50:07,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-02 09:50:07,823 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:07,824 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:50:07,824 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:07,828 INFO L82 PathProgramCache]: Analyzing trace with hash -417514722, now seen corresponding path program 1 times [2018-02-02 09:50:07,862 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:07,904 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:07,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:07,979 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:50:07,979 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 09:50:07,980 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:07,981 INFO L182 omatonBuilderFactory]: Interpolants [64#(= 1 (select |#valid| main_~nondetString1~0.base)), 61#true, 62#false, 63#(= 1 (select |#valid| |main_#t~malloc11.base|))] [2018-02-02 09:50:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:07,982 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 09:50:07,994 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 09:50:07,994 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 09:50:07,997 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2018-02-02 09:50:08,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:08,165 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2018-02-02 09:50:08,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 09:50:08,167 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-02-02 09:50:08,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:08,173 INFO L225 Difference]: With dead ends: 57 [2018-02-02 09:50:08,173 INFO L226 Difference]: Without dead ends: 54 [2018-02-02 09:50:08,174 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:50:08,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-02-02 09:50:08,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-02-02 09:50:08,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-02-02 09:50:08,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-02-02 09:50:08,198 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 13 [2018-02-02 09:50:08,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:08,198 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-02-02 09:50:08,198 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 09:50:08,198 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-02-02 09:50:08,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-02 09:50:08,198 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:08,199 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:50:08,199 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:08,199 INFO L82 PathProgramCache]: Analyzing trace with hash -417514721, now seen corresponding path program 1 times [2018-02-02 09:50:08,200 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:08,213 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:08,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:08,301 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:50:08,301 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 09:50:08,302 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:08,302 INFO L182 omatonBuilderFactory]: Interpolants [178#true, 179#false, 180#(<= 1 main_~length1~0), 181#(and (= main_~length1~0 (select |#length| |main_#t~malloc11.base|)) (= (select |#valid| |main_#t~malloc11.base|) 1) (= 0 |main_#t~malloc11.offset|) (<= 1 main_~length1~0)), 182#(and (= main_~length1~0 (select |#length| main_~nondetString1~0.base)) (= (select |#valid| main_~nondetString1~0.base) 1) (<= 1 main_~length1~0) (= main_~nondetString1~0.offset 0)), 183#(and (= (select |#length| main_~nondetString1~0.base) main_~length1~0) (<= 1 main_~length1~0) (= main_~nondetString1~0.offset 0))] [2018-02-02 09:50:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:08,303 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 09:50:08,304 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 09:50:08,304 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-02-02 09:50:08,304 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 6 states. [2018-02-02 09:50:08,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:08,358 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2018-02-02 09:50:08,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 09:50:08,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-02-02 09:50:08,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:08,359 INFO L225 Difference]: With dead ends: 53 [2018-02-02 09:50:08,359 INFO L226 Difference]: Without dead ends: 53 [2018-02-02 09:50:08,360 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-02-02 09:50:08,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-02-02 09:50:08,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-02-02 09:50:08,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-02-02 09:50:08,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2018-02-02 09:50:08,364 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 13 [2018-02-02 09:50:08,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:08,364 INFO L432 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2018-02-02 09:50:08,364 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 09:50:08,365 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2018-02-02 09:50:08,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 09:50:08,365 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:08,365 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:50:08,365 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:08,365 INFO L82 PathProgramCache]: Analyzing trace with hash -58054499, now seen corresponding path program 1 times [2018-02-02 09:50:08,366 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:08,376 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:08,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:08,396 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:50:08,396 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 09:50:08,396 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:08,397 INFO L182 omatonBuilderFactory]: Interpolants [292#true, 293#false, 294#(= 1 (select |#valid| |main_#t~malloc12.base|)), 295#(= 1 (select |#valid| main_~nondetString2~0.base))] [2018-02-02 09:50:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:08,397 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 09:50:08,397 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 09:50:08,397 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 09:50:08,397 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 4 states. [2018-02-02 09:50:08,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:08,489 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2018-02-02 09:50:08,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 09:50:08,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-02-02 09:50:08,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:08,491 INFO L225 Difference]: With dead ends: 52 [2018-02-02 09:50:08,491 INFO L226 Difference]: Without dead ends: 52 [2018-02-02 09:50:08,491 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:50:08,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-02-02 09:50:08,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-02-02 09:50:08,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-02-02 09:50:08,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-02-02 09:50:08,494 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 14 [2018-02-02 09:50:08,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:08,495 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-02-02 09:50:08,495 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 09:50:08,495 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-02-02 09:50:08,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 09:50:08,495 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:08,495 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:50:08,496 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:08,496 INFO L82 PathProgramCache]: Analyzing trace with hash -58054498, now seen corresponding path program 1 times [2018-02-02 09:50:08,497 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:08,507 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:08,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:08,561 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:50:08,561 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 09:50:08,561 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:08,562 INFO L182 omatonBuilderFactory]: Interpolants [402#true, 403#false, 404#(<= 1 main_~length2~0), 405#(and (= 0 |main_#t~malloc12.offset|) (<= 1 main_~length2~0) (= main_~length2~0 (select |#length| |main_#t~malloc12.base|))), 406#(and (= main_~nondetString2~0.offset 0) (<= 1 main_~length2~0) (= main_~length2~0 (select |#length| main_~nondetString2~0.base)))] [2018-02-02 09:50:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:08,562 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 09:50:08,562 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 09:50:08,562 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:50:08,562 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 5 states. [2018-02-02 09:50:08,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:08,583 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2018-02-02 09:50:08,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 09:50:08,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-02-02 09:50:08,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:08,584 INFO L225 Difference]: With dead ends: 51 [2018-02-02 09:50:08,584 INFO L226 Difference]: Without dead ends: 51 [2018-02-02 09:50:08,584 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-02-02 09:50:08,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-02-02 09:50:08,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-02-02 09:50:08,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-02-02 09:50:08,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2018-02-02 09:50:08,589 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 14 [2018-02-02 09:50:08,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:08,589 INFO L432 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2018-02-02 09:50:08,589 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 09:50:08,589 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2018-02-02 09:50:08,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-02 09:50:08,589 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:08,589 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] [2018-02-02 09:50:08,590 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:08,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1465356832, now seen corresponding path program 1 times [2018-02-02 09:50:08,590 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:08,605 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:08,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:08,674 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:50:08,674 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-02 09:50:08,675 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:08,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:08,675 INFO L182 omatonBuilderFactory]: Interpolants [512#false, 513#(<= 1 main_~length1~0), 514#(and (= 0 |main_#t~malloc11.offset|) (<= 1 main_~length1~0)), 515#(and (<= 1 main_~length1~0) (= main_~nondetString1~0.offset 0)), 516#(and (<= (+ main_~nondetString1~0.offset 1) (select |#length| main_~nondetString1~0.base)) (= main_~nondetString1~0.offset 0)), 517#(and (<= 1 (select |#length| |cstrncmp_#in~s1.base|)) (= 0 |cstrncmp_#in~s1.offset|)), 518#(and (= cstrncmp_~s1.offset 0) (<= 1 (select |#length| cstrncmp_~s1.base))), 511#true] [2018-02-02 09:50:08,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:08,675 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-02 09:50:08,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-02 09:50:08,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-02-02 09:50:08,676 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 8 states. [2018-02-02 09:50:08,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:08,780 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2018-02-02 09:50:08,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 09:50:08,781 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-02-02 09:50:08,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:08,783 INFO L225 Difference]: With dead ends: 68 [2018-02-02 09:50:08,783 INFO L226 Difference]: Without dead ends: 68 [2018-02-02 09:50:08,783 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-02-02 09:50:08,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-02-02 09:50:08,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2018-02-02 09:50:08,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-02-02 09:50:08,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2018-02-02 09:50:08,786 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 20 [2018-02-02 09:50:08,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:08,787 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2018-02-02 09:50:08,787 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-02 09:50:08,787 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2018-02-02 09:50:08,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-02 09:50:08,787 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:08,787 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] [2018-02-02 09:50:08,787 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:08,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1465356831, now seen corresponding path program 1 times [2018-02-02 09:50:08,788 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:08,797 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:08,824 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:50:08,824 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 09:50:08,824 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:08,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:08,825 INFO L182 omatonBuilderFactory]: Interpolants [656#(= 1 (select |#valid| cstrncmp_~s1.base)), 652#true, 653#false, 654#(= 1 (select |#valid| main_~nondetString1~0.base)), 655#(= 1 (select |#valid| |cstrncmp_#in~s1.base|))] [2018-02-02 09:50:08,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:08,826 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 09:50:08,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 09:50:08,826 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:50:08,826 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 5 states. [2018-02-02 09:50:08,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:08,863 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2018-02-02 09:50:08,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 09:50:08,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-02-02 09:50:08,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:08,864 INFO L225 Difference]: With dead ends: 55 [2018-02-02 09:50:08,864 INFO L226 Difference]: Without dead ends: 55 [2018-02-02 09:50:08,864 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-02 09:50:08,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-02-02 09:50:08,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-02-02 09:50:08,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-02-02 09:50:08,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2018-02-02 09:50:08,866 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 20 [2018-02-02 09:50:08,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:08,866 INFO L432 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2018-02-02 09:50:08,867 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 09:50:08,867 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2018-02-02 09:50:08,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-02 09:50:08,867 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:08,867 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:50:08,867 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:08,867 INFO L82 PathProgramCache]: Analyzing trace with hash -541357888, now seen corresponding path program 1 times [2018-02-02 09:50:08,868 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:08,877 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:08,905 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:50:08,905 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 09:50:08,906 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:08,906 INFO L182 omatonBuilderFactory]: Interpolants [769#true, 770#false, 771#(= 1 (select |#valid| main_~nondetString2~0.base)), 772#(= 1 (select |#valid| |cstrncmp_#in~s2.base|)), 773#(= 1 (select |#valid| cstrncmp_~s2.base)), 774#(= 1 (select |#valid| |cstrncmp_#t~post1.base|))] [2018-02-02 09:50:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:08,906 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 09:50:08,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 09:50:08,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 09:50:08,907 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 6 states. [2018-02-02 09:50:08,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:08,968 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2018-02-02 09:50:08,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 09:50:08,969 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-02-02 09:50:08,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:08,970 INFO L225 Difference]: With dead ends: 54 [2018-02-02 09:50:08,970 INFO L226 Difference]: Without dead ends: 54 [2018-02-02 09:50:08,970 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-02-02 09:50:08,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-02-02 09:50:08,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-02-02 09:50:08,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-02-02 09:50:08,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2018-02-02 09:50:08,973 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 22 [2018-02-02 09:50:08,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:08,974 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2018-02-02 09:50:08,974 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 09:50:08,974 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2018-02-02 09:50:08,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-02 09:50:08,974 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:08,975 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:50:08,975 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:08,975 INFO L82 PathProgramCache]: Analyzing trace with hash -541357887, now seen corresponding path program 1 times [2018-02-02 09:50:08,976 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:08,985 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,058 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:50:09,059 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-02 09:50:09,059 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,059 INFO L182 omatonBuilderFactory]: Interpolants [887#true, 888#false, 889#(<= 1 main_~length2~0), 890#(and (= 0 |main_#t~malloc12.offset|) (<= 1 main_~length2~0) (= main_~length2~0 (select |#length| |main_#t~malloc12.base|))), 891#(and (= 0 main_~nondetString2~0.offset) (<= 1 main_~length2~0) (= main_~length2~0 (select |#length| main_~nondetString2~0.base))), 892#(and (= 0 main_~nondetString2~0.offset) (<= 1 (select |#length| main_~nondetString2~0.base))), 893#(and (<= 1 (select |#length| |cstrncmp_#in~s2.base|)) (= 0 |cstrncmp_#in~s2.offset|)), 894#(and (= 0 cstrncmp_~s2.offset) (<= 1 (select |#length| cstrncmp_~s2.base))), 895#(and (= |cstrncmp_#t~post1.offset| 0) (<= 1 (select |#length| |cstrncmp_#t~post1.base|)))] [2018-02-02 09:50:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,059 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-02 09:50:09,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-02 09:50:09,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-02-02 09:50:09,060 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 9 states. [2018-02-02 09:50:09,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:09,146 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2018-02-02 09:50:09,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 09:50:09,146 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-02-02 09:50:09,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:09,147 INFO L225 Difference]: With dead ends: 56 [2018-02-02 09:50:09,147 INFO L226 Difference]: Without dead ends: 56 [2018-02-02 09:50:09,147 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-02-02 09:50:09,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-02-02 09:50:09,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2018-02-02 09:50:09,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-02-02 09:50:09,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2018-02-02 09:50:09,150 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 22 [2018-02-02 09:50:09,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:09,151 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2018-02-02 09:50:09,151 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-02 09:50:09,151 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2018-02-02 09:50:09,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-02 09:50:09,152 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:09,152 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:50:09,152 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:09,152 INFO L82 PathProgramCache]: Analyzing trace with hash -553886463, now seen corresponding path program 1 times [2018-02-02 09:50:09,153 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:09,162 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,188 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:50:09,188 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 09:50:09,188 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:09,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,189 INFO L182 omatonBuilderFactory]: Interpolants [1012#true, 1013#false, 1014#(= 1 (select |#valid| main_~nondetString1~0.base)), 1015#(= 1 (select |#valid| |cstrncmp_#in~s1.base|)), 1016#(= 1 (select |#valid| cstrncmp_~s1.base)), 1017#(= 1 (select |#valid| |cstrncmp_#t~post7.base|))] [2018-02-02 09:50:09,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,189 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 09:50:09,189 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 09:50:09,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 09:50:09,190 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 6 states. [2018-02-02 09:50:09,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:09,240 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2018-02-02 09:50:09,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 09:50:09,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-02-02 09:50:09,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:09,241 INFO L225 Difference]: With dead ends: 53 [2018-02-02 09:50:09,241 INFO L226 Difference]: Without dead ends: 53 [2018-02-02 09:50:09,242 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-02-02 09:50:09,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-02-02 09:50:09,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-02-02 09:50:09,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-02-02 09:50:09,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2018-02-02 09:50:09,244 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 24 [2018-02-02 09:50:09,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:09,244 INFO L432 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2018-02-02 09:50:09,244 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 09:50:09,244 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2018-02-02 09:50:09,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-02 09:50:09,245 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:09,245 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:50:09,245 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:09,245 INFO L82 PathProgramCache]: Analyzing trace with hash -553886462, now seen corresponding path program 1 times [2018-02-02 09:50:09,246 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:09,255 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:09,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,311 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:50:09,312 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-02 09:50:09,312 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,312 INFO L182 omatonBuilderFactory]: Interpolants [1128#true, 1129#false, 1130#(= 0 |main_#t~malloc11.offset|), 1131#(= 0 main_~nondetString1~0.offset), 1132#(= 0 |cstrncmp_#in~s1.offset|), 1133#(= 0 cstrncmp_~s1.offset), 1134#(and (= 0 cstrncmp_~s1.offset) (<= (+ cstrncmp_~s1.offset 1) (select |#length| cstrncmp_~s1.base))), 1135#(and (<= 1 (select |#length| |cstrncmp_#t~post7.base|)) (= |cstrncmp_#t~post7.offset| 0))] [2018-02-02 09:50:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,312 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-02 09:50:09,312 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-02 09:50:09,312 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-02-02 09:50:09,313 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 8 states. [2018-02-02 09:50:09,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:09,377 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2018-02-02 09:50:09,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 09:50:09,378 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2018-02-02 09:50:09,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:09,378 INFO L225 Difference]: With dead ends: 64 [2018-02-02 09:50:09,378 INFO L226 Difference]: Without dead ends: 64 [2018-02-02 09:50:09,378 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-02-02 09:50:09,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-02-02 09:50:09,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2018-02-02 09:50:09,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-02-02 09:50:09,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2018-02-02 09:50:09,381 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 24 [2018-02-02 09:50:09,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:09,382 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2018-02-02 09:50:09,382 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-02 09:50:09,382 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2018-02-02 09:50:09,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-02 09:50:09,382 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:09,382 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:50:09,383 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:09,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1181606150, now seen corresponding path program 1 times [2018-02-02 09:50:09,383 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:09,392 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,449 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:50:09,450 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 09:50:09,450 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:09,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,450 INFO L182 omatonBuilderFactory]: Interpolants [1264#(= |#valid| |old(#valid)|), 1265#(and (= |old(#valid)| (store |#valid| |main_#t~malloc11.base| 0)) (= (select |#valid| |main_#t~malloc11.base|) 1)), 1266#(and (not (= |main_#t~malloc11.base| |main_#t~malloc12.base|)) (= (store (store |#valid| |main_#t~malloc12.base| 0) |main_#t~malloc11.base| (select (store |#valid| |main_#t~malloc11.base| 0) |main_#t~malloc11.base|)) |old(#valid)|)), 1267#(= (store |#valid| |main_#t~malloc12.base| 0) |old(#valid)|), 1262#true, 1263#false] [2018-02-02 09:50:09,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,450 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 09:50:09,450 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 09:50:09,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 09:50:09,451 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 6 states. [2018-02-02 09:50:09,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:09,545 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2018-02-02 09:50:09,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 09:50:09,546 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-02-02 09:50:09,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:09,546 INFO L225 Difference]: With dead ends: 53 [2018-02-02 09:50:09,546 INFO L226 Difference]: Without dead ends: 43 [2018-02-02 09:50:09,546 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-02-02 09:50:09,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-02-02 09:50:09,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-02-02 09:50:09,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-02-02 09:50:09,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2018-02-02 09:50:09,549 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 26 [2018-02-02 09:50:09,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:09,549 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2018-02-02 09:50:09,549 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 09:50:09,549 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2018-02-02 09:50:09,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-02 09:50:09,550 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:09,550 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:50:09,550 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:09,550 INFO L82 PathProgramCache]: Analyzing trace with hash 290777922, now seen corresponding path program 1 times [2018-02-02 09:50:09,551 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:09,559 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,597 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:50:09,597 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 09:50:09,597 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:09,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,598 INFO L182 omatonBuilderFactory]: Interpolants [1368#true, 1369#false, 1370#(= 1 (select |#valid| main_~nondetString2~0.base)), 1371#(= 1 (select |#valid| |cstrncmp_#in~s2.base|)), 1372#(= 1 (select |#valid| cstrncmp_~s2.base)), 1373#(= 1 (select |#valid| |cstrncmp_#t~pre4.base|))] [2018-02-02 09:50:09,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,598 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 09:50:09,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 09:50:09,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 09:50:09,599 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 6 states. [2018-02-02 09:50:09,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:09,644 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2018-02-02 09:50:09,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 09:50:09,644 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-02-02 09:50:09,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:09,645 INFO L225 Difference]: With dead ends: 42 [2018-02-02 09:50:09,645 INFO L226 Difference]: Without dead ends: 42 [2018-02-02 09:50:09,645 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-02-02 09:50:09,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-02-02 09:50:09,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-02-02 09:50:09,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-02-02 09:50:09,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2018-02-02 09:50:09,647 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 26 [2018-02-02 09:50:09,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:09,648 INFO L432 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2018-02-02 09:50:09,648 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 09:50:09,648 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2018-02-02 09:50:09,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-02 09:50:09,648 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:09,648 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:50:09,649 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:09,649 INFO L82 PathProgramCache]: Analyzing trace with hash 290777923, now seen corresponding path program 1 times [2018-02-02 09:50:09,649 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:09,658 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:09,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,719 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:50:09,719 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-02 09:50:09,719 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:09,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,720 INFO L182 omatonBuilderFactory]: Interpolants [1462#true, 1463#false, 1464#(= 0 |main_#t~malloc12.offset|), 1465#(= 0 main_~nondetString2~0.offset), 1466#(= 0 |cstrncmp_#in~s2.offset|), 1467#(= 0 cstrncmp_~s2.offset), 1468#(and (<= (+ |cstrncmp_#t~post1.offset| 1) cstrncmp_~s2.offset) (= |cstrncmp_#t~post1.offset| 0) (<= cstrncmp_~s2.offset (+ |cstrncmp_#t~post1.offset| 1)) (= |cstrncmp_#t~post1.base| cstrncmp_~s2.base)), 1469#(and (<= cstrncmp_~s2.offset (select |#length| cstrncmp_~s2.base)) (<= 1 cstrncmp_~s2.offset)), 1470#(and (<= 0 |cstrncmp_#t~pre4.offset|) (<= (+ |cstrncmp_#t~pre4.offset| 1) (select |#length| |cstrncmp_#t~pre4.base|)))] [2018-02-02 09:50:09,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,720 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-02 09:50:09,720 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-02 09:50:09,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-02-02 09:50:09,721 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 9 states. [2018-02-02 09:50:09,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:09,802 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-02-02 09:50:09,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-02 09:50:09,802 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-02-02 09:50:09,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:09,803 INFO L225 Difference]: With dead ends: 51 [2018-02-02 09:50:09,803 INFO L226 Difference]: Without dead ends: 48 [2018-02-02 09:50:09,803 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2018-02-02 09:50:09,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-02-02 09:50:09,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2018-02-02 09:50:09,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-02-02 09:50:09,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-02-02 09:50:09,805 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 26 [2018-02-02 09:50:09,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:09,806 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-02-02 09:50:09,806 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-02 09:50:09,806 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-02-02 09:50:09,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-02-02 09:50:09,806 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:09,807 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:50:09,807 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:09,807 INFO L82 PathProgramCache]: Analyzing trace with hash -716230416, now seen corresponding path program 1 times [2018-02-02 09:50:09,808 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:09,824 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:09,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,945 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:50:09,945 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-02-02 09:50:09,945 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:09,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,945 INFO L182 omatonBuilderFactory]: Interpolants [1584#(= 0 (select (select |#memory_int| cstrncmp_~s1.base) cstrncmp_~s1.offset)), 1585#(= 0 (select (select |#memory_int| |cstrncmp_#t~post7.base|) |cstrncmp_#t~post7.offset|)), 1586#(= 0 |cstrncmp_#t~mem8|), 1575#true, 1576#false, 1577#(and (<= 1 main_~length1~0) (<= main_~length1~0 1)), 1578#(and (= (select |#valid| |main_#t~malloc11.base|) 1) (= 0 |main_#t~malloc11.offset|) (<= 1 main_~length1~0) (<= main_~length1~0 1)), 1579#(and (= (select |#valid| main_~nondetString1~0.base) 1) (= 1 (+ main_~nondetString1~0.offset main_~length1~0)) (= main_~nondetString1~0.offset 0)), 1580#(and (not (= main_~nondetString1~0.base |main_#t~malloc12.base|)) (= 1 (+ main_~nondetString1~0.offset main_~length1~0)) (= main_~nondetString1~0.offset 0)), 1581#(and (not (= main_~nondetString1~0.base main_~nondetString2~0.base)) (= 1 (+ main_~nondetString1~0.offset main_~length1~0)) (= main_~nondetString1~0.offset 0)), 1582#(and (= 0 (select (select (store |#memory_int| main_~nondetString2~0.base (store (select |#memory_int| main_~nondetString2~0.base) (+ main_~length2~0 main_~nondetString2~0.offset (- 1)) 0)) main_~nondetString1~0.base) main_~nondetString1~0.offset)) (not (= main_~nondetString1~0.base main_~nondetString2~0.base)) (= main_~nondetString1~0.offset 0)), 1583#(= 0 (select (select |#memory_int| |cstrncmp_#in~s1.base|) |cstrncmp_#in~s1.offset|))] [2018-02-02 09:50:09,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:09,946 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-02-02 09:50:09,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-02-02 09:50:09,946 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-02-02 09:50:09,946 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 12 states. [2018-02-02 09:50:10,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:10,070 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2018-02-02 09:50:10,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-02 09:50:10,070 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-02-02 09:50:10,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:10,071 INFO L225 Difference]: With dead ends: 59 [2018-02-02 09:50:10,071 INFO L226 Difference]: Without dead ends: 41 [2018-02-02 09:50:10,071 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2018-02-02 09:50:10,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-02-02 09:50:10,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-02-02 09:50:10,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-02-02 09:50:10,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-02-02 09:50:10,073 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 29 [2018-02-02 09:50:10,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:10,073 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-02-02 09:50:10,073 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-02-02 09:50:10,073 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-02-02 09:50:10,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-02-02 09:50:10,073 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:10,073 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:50:10,074 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:10,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1773298546, now seen corresponding path program 1 times [2018-02-02 09:50:10,075 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:10,083 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:10,298 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-02 09:50:10,298 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-02-02 09:50:10,299 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:10,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:10,299 INFO L182 omatonBuilderFactory]: Interpolants [1701#true, 1702#false, 1703#(<= 1 main_~length1~0), 1704#(and (= (select |#valid| |main_#t~malloc11.base|) 1) (= 0 |main_#t~malloc11.offset|) (<= 1 main_~length1~0)), 1705#(and (= 0 main_~nondetString1~0.offset) (or (not (= (+ main_~nondetString1~0.offset main_~length1~0) 1)) (= (select |#valid| main_~nondetString1~0.base) 1)) (<= 1 main_~length1~0)), 1706#(and (or (not (= main_~nondetString1~0.base |main_#t~malloc12.base|)) (not (= (+ main_~nondetString1~0.offset main_~length1~0) 1))) (<= 1 main_~length1~0) (= main_~nondetString1~0.offset 0)), 1707#(and (or (not (= (+ main_~nondetString1~0.offset main_~length1~0) 1)) (not (= main_~nondetString1~0.base main_~nondetString2~0.base))) (<= 1 main_~length1~0) (= main_~nondetString1~0.offset 0)), 1708#(and (= 0 main_~nondetString1~0.offset) (or (and (= 0 (select (select (store |#memory_int| main_~nondetString2~0.base (store (select |#memory_int| main_~nondetString2~0.base) (+ main_~length2~0 main_~nondetString2~0.offset (- 1)) 0)) main_~nondetString1~0.base) main_~nondetString1~0.offset)) (not (= main_~nondetString1~0.base main_~nondetString2~0.base))) (<= 2 (select |#length| main_~nondetString1~0.base)))), 1709#(and (or (<= 2 (select |#length| |cstrncmp_#in~s1.base|)) (= 0 (select (select |#memory_int| |cstrncmp_#in~s1.base|) |cstrncmp_#in~s1.offset|))) (= 0 |cstrncmp_#in~s1.offset|)), 1710#(and (or (<= 2 (select |#length| cstrncmp_~s1.base)) (= 0 (select (select |#memory_int| cstrncmp_~s1.base) cstrncmp_~s1.offset))) (= 0 cstrncmp_~s1.offset)), 1711#(and (or (<= (+ cstrncmp_~s1.offset 1) (+ |cstrncmp_#t~post7.offset| (select |#length| cstrncmp_~s1.base))) (= 0 (select (select |#memory_int| |cstrncmp_#t~post7.base|) |cstrncmp_#t~post7.offset|))) (<= (+ |cstrncmp_#t~post7.offset| 1) cstrncmp_~s1.offset) (= |cstrncmp_#t~post7.offset| 0)), 1712#(and (<= 1 cstrncmp_~s1.offset) (or (= 0 |cstrncmp_#t~mem8|) (<= (+ cstrncmp_~s1.offset 1) (select |#length| cstrncmp_~s1.base)))), 1713#(and (<= 1 cstrncmp_~s1.offset) (<= (+ cstrncmp_~s1.offset 1) (select |#length| cstrncmp_~s1.base)))] [2018-02-02 09:50:10,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:10,299 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-02-02 09:50:10,299 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-02-02 09:50:10,300 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-02-02 09:50:10,300 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 13 states. [2018-02-02 09:50:10,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:10,556 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2018-02-02 09:50:10,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-02-02 09:50:10,557 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 29 [2018-02-02 09:50:10,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:10,557 INFO L225 Difference]: With dead ends: 54 [2018-02-02 09:50:10,557 INFO L226 Difference]: Without dead ends: 54 [2018-02-02 09:50:10,558 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2018-02-02 09:50:10,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-02-02 09:50:10,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2018-02-02 09:50:10,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-02-02 09:50:10,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2018-02-02 09:50:10,559 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 29 [2018-02-02 09:50:10,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:10,559 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-02-02 09:50:10,559 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-02-02 09:50:10,559 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2018-02-02 09:50:10,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-02-02 09:50:10,559 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:10,560 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:50:10,560 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:10,560 INFO L82 PathProgramCache]: Analyzing trace with hash -962114157, now seen corresponding path program 1 times [2018-02-02 09:50:10,560 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:10,573 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:10,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:10,737 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-02 09:50:10,737 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-02-02 09:50:10,737 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:10,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:10,737 INFO L182 omatonBuilderFactory]: Interpolants [1834#true, 1835#false, 1836#(<= 1 main_~length2~0), 1837#(and (= 0 |main_#t~malloc12.offset|) (<= 1 main_~length2~0)), 1838#(and (= 0 main_~nondetString2~0.offset) (<= 1 main_~length2~0)), 1839#(and (= 0 main_~nondetString2~0.offset) (or (= 0 (select (select |#memory_int| main_~nondetString2~0.base) main_~nondetString2~0.offset)) (<= 2 (select |#length| main_~nondetString2~0.base)))), 1840#(and (or (= 0 (select (select |#memory_int| |cstrncmp_#in~s2.base|) |cstrncmp_#in~s2.offset|)) (<= 2 (select |#length| |cstrncmp_#in~s2.base|))) (= 0 |cstrncmp_#in~s2.offset|)), 1841#(and (or (<= 2 (select |#length| cstrncmp_~s2.base)) (= 0 (select (select |#memory_int| cstrncmp_~s2.base) cstrncmp_~s2.offset))) (= 0 cstrncmp_~s2.offset)), 1842#(and (= 0 cstrncmp_~s2.offset) (or (<= 2 (select |#length| cstrncmp_~s2.base)) (and (= (select (select |#memory_int| cstrncmp_~s1.base) cstrncmp_~s1.offset) |cstrncmp_#t~mem2|) (= 0 (select (select |#memory_int| cstrncmp_~s2.base) cstrncmp_~s2.offset))))), 1843#(and (<= (+ |cstrncmp_#t~post1.offset| 1) cstrncmp_~s2.offset) (= |cstrncmp_#t~post1.offset| 0) (= |cstrncmp_#t~post1.base| cstrncmp_~s2.base) (or (and (= 0 (select (select |#memory_int| |cstrncmp_#t~post1.base|) |cstrncmp_#t~post1.offset|)) (= (select (select |#memory_int| cstrncmp_~s1.base) cstrncmp_~s1.offset) |cstrncmp_#t~mem2|)) (<= (+ cstrncmp_~s2.offset 1) (+ (select |#length| |cstrncmp_#t~post1.base|) |cstrncmp_#t~post1.offset|)))), 1844#(and (or (<= (+ cstrncmp_~s2.offset 1) (select |#length| cstrncmp_~s2.base)) (and (= 0 |cstrncmp_#t~mem3|) (= (select (select |#memory_int| cstrncmp_~s1.base) cstrncmp_~s1.offset) |cstrncmp_#t~mem2|))) (<= 1 cstrncmp_~s2.offset)), 1845#(and (or (<= (+ cstrncmp_~s2.offset 1) (select |#length| cstrncmp_~s2.base)) (= 0 (select (select |#memory_int| |cstrncmp_#t~post7.base|) |cstrncmp_#t~post7.offset|))) (<= 1 cstrncmp_~s2.offset)), 1846#(and (or (= 0 |cstrncmp_#t~mem8|) (<= (+ cstrncmp_~s2.offset 1) (select |#length| cstrncmp_~s2.base))) (<= 1 cstrncmp_~s2.offset)), 1847#(and (<= (+ cstrncmp_~s2.offset 1) (select |#length| cstrncmp_~s2.base)) (<= 1 cstrncmp_~s2.offset)), 1848#(and (<= 1 |cstrncmp_#t~post1.offset|) (<= (+ |cstrncmp_#t~post1.offset| 1) (select |#length| |cstrncmp_#t~post1.base|)))] [2018-02-02 09:50:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:10,738 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-02-02 09:50:10,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-02-02 09:50:10,738 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2018-02-02 09:50:10,738 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 15 states. [2018-02-02 09:50:11,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:11,011 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2018-02-02 09:50:11,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-02-02 09:50:11,011 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2018-02-02 09:50:11,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:11,011 INFO L225 Difference]: With dead ends: 50 [2018-02-02 09:50:11,011 INFO L226 Difference]: Without dead ends: 50 [2018-02-02 09:50:11,012 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2018-02-02 09:50:11,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-02-02 09:50:11,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-02-02 09:50:11,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-02-02 09:50:11,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2018-02-02 09:50:11,013 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 31 [2018-02-02 09:50:11,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:11,013 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2018-02-02 09:50:11,013 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-02-02 09:50:11,013 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2018-02-02 09:50:11,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-02-02 09:50:11,014 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:11,014 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:50:11,014 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:11,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1173736108, now seen corresponding path program 1 times [2018-02-02 09:50:11,014 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:11,024 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:11,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:11,089 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-02 09:50:11,089 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-02-02 09:50:11,089 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:11,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:11,090 INFO L182 omatonBuilderFactory]: Interpolants [1969#true, 1970#false, 1971#(= 0 |main_#t~malloc11.offset|), 1972#(= 0 main_~nondetString1~0.offset), 1973#(= 0 |cstrncmp_#in~s1.offset|), 1974#(= 0 cstrncmp_~s1.offset), 1975#(and (<= (+ |cstrncmp_#t~post7.offset| 1) cstrncmp_~s1.offset) (= |cstrncmp_#t~post7.offset| 0)), 1976#(<= 1 cstrncmp_~s1.offset), 1977#(and (<= 1 cstrncmp_~s1.offset) (<= (+ cstrncmp_~s1.offset 1) (select |#length| cstrncmp_~s1.base))), 1978#(and (<= (+ |cstrncmp_#t~post7.offset| 1) (select |#length| |cstrncmp_#t~post7.base|)) (<= 1 |cstrncmp_#t~post7.offset|))] [2018-02-02 09:50:11,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:11,090 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-02 09:50:11,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-02 09:50:11,090 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-02-02 09:50:11,090 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 10 states. [2018-02-02 09:50:11,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:11,168 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2018-02-02 09:50:11,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-02 09:50:11,168 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2018-02-02 09:50:11,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:11,169 INFO L225 Difference]: With dead ends: 48 [2018-02-02 09:50:11,169 INFO L226 Difference]: Without dead ends: 48 [2018-02-02 09:50:11,169 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-02-02 09:50:11,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-02-02 09:50:11,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2018-02-02 09:50:11,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-02-02 09:50:11,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2018-02-02 09:50:11,172 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 33 [2018-02-02 09:50:11,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:11,172 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2018-02-02 09:50:11,172 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-02 09:50:11,172 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2018-02-02 09:50:11,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-02-02 09:50:11,173 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:11,173 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:50:11,173 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:11,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1615722261, now seen corresponding path program 1 times [2018-02-02 09:50:11,174 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:11,182 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:11,258 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:11,258 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-02 09:50:11,259 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-02-02 09:50:11,259 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:11,259 INFO L182 omatonBuilderFactory]: Interpolants [2085#true, 2086#false, 2087#(= 0 |main_#t~malloc12.offset|), 2088#(= 0 main_~nondetString2~0.offset), 2089#(= 0 |cstrncmp_#in~s2.offset|), 2090#(= 0 cstrncmp_~s2.offset), 2091#(and (<= (+ |cstrncmp_#t~post1.offset| 1) cstrncmp_~s2.offset) (= |cstrncmp_#t~post1.offset| 0) (= |cstrncmp_#t~post1.base| cstrncmp_~s2.base)), 2092#(<= 1 cstrncmp_~s2.offset), 2093#(and (<= 2 cstrncmp_~s2.offset) (<= (+ (select |#length| |cstrncmp_#t~post1.base|) cstrncmp_~s2.offset) (+ |cstrncmp_#t~post1.offset| (select |#length| cstrncmp_~s2.base) 1))), 2094#(and (<= 2 cstrncmp_~s2.offset) (<= cstrncmp_~s2.offset (select |#length| cstrncmp_~s2.base))), 2095#(and (<= 1 |cstrncmp_#t~pre4.offset|) (<= (+ |cstrncmp_#t~pre4.offset| 1) (select |#length| |cstrncmp_#t~pre4.base|)))] [2018-02-02 09:50:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:11,260 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-02-02 09:50:11,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-02-02 09:50:11,260 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-02-02 09:50:11,260 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 11 states. [2018-02-02 09:50:11,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:11,388 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2018-02-02 09:50:11,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-02 09:50:11,389 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2018-02-02 09:50:11,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:11,389 INFO L225 Difference]: With dead ends: 45 [2018-02-02 09:50:11,389 INFO L226 Difference]: Without dead ends: 42 [2018-02-02 09:50:11,390 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2018-02-02 09:50:11,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-02-02 09:50:11,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-02-02 09:50:11,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-02-02 09:50:11,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2018-02-02 09:50:11,391 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 35 [2018-02-02 09:50:11,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:11,391 INFO L432 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2018-02-02 09:50:11,391 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-02-02 09:50:11,392 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2018-02-02 09:50:11,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-02-02 09:50:11,392 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:11,392 INFO L351 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:50:11,392 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:11,393 INFO L82 PathProgramCache]: Analyzing trace with hash -48907298, now seen corresponding path program 2 times [2018-02-02 09:50:11,393 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:11,414 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:11,772 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:11,772 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-02 09:50:11,773 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-02-02 09:50:11,773 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:11,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:11,773 INFO L182 omatonBuilderFactory]: Interpolants [2208#(and (or (<= (+ |cstrncmp_#t~post7.offset| (select |#length| cstrncmp_~s1.base)) cstrncmp_~s1.offset) (and (= 0 (select (select |#memory_int| cstrncmp_~s1.base) 1)) (= 1 cstrncmp_~s1.offset)) (<= (+ cstrncmp_~s1.offset 2) (+ |cstrncmp_#t~post7.offset| (select |#length| cstrncmp_~s1.base)))) (= |cstrncmp_#t~post7.offset| 0)), 2209#(or (<= (+ cstrncmp_~s1.offset 2) (select |#length| cstrncmp_~s1.base)) (and (= 0 (select (select |#memory_int| cstrncmp_~s1.base) 1)) (= 1 cstrncmp_~s1.offset)) (<= (select |#length| cstrncmp_~s1.base) cstrncmp_~s1.offset)), 2210#(or (<= (+ cstrncmp_~s1.offset 2) (select |#length| cstrncmp_~s1.base)) (and (= 0 (select (select |#memory_int| cstrncmp_~s1.base) 1)) (= 1 cstrncmp_~s1.offset))), 2211#(or (and (= (select |#length| |cstrncmp_#t~post7.base|) (select |#length| cstrncmp_~s1.base)) (<= (+ cstrncmp_~s1.offset 1) (select |#length| |cstrncmp_#t~post7.base|)) (<= (+ |cstrncmp_#t~post7.offset| 1) cstrncmp_~s1.offset)) (= 0 (select (select |#memory_int| |cstrncmp_#t~post7.base|) |cstrncmp_#t~post7.offset|))), 2212#(or (= 0 |cstrncmp_#t~mem8|) (and (<= 1 cstrncmp_~s1.offset) (<= (+ cstrncmp_~s1.offset 1) (select |#length| cstrncmp_~s1.base)))), 2213#(and (<= 1 cstrncmp_~s1.offset) (<= (+ cstrncmp_~s1.offset 1) (select |#length| cstrncmp_~s1.base))), 2199#true, 2200#false, 2201#(and (= main_~length1~0 (select |#length| |main_#t~malloc11.base|)) (= (select |#valid| |main_#t~malloc11.base|) 1) (= 0 |main_#t~malloc11.offset|)), 2202#(and (= 0 main_~nondetString1~0.offset) (= (select |#valid| main_~nondetString1~0.base) 1) (or (= main_~length1~0 (select |#length| main_~nondetString1~0.base)) (= (+ main_~nondetString1~0.offset main_~length1~0) 2))), 2203#(and (not (= main_~nondetString1~0.base |main_#t~malloc12.base|)) (= 0 main_~nondetString1~0.offset) (or (= main_~length1~0 (select |#length| main_~nondetString1~0.base)) (= (+ main_~nondetString1~0.offset main_~length1~0) 2))), 2204#(and (= 0 main_~nondetString1~0.offset) (or (= main_~length1~0 (select |#length| main_~nondetString1~0.base)) (= (+ main_~nondetString1~0.offset main_~length1~0) 2)) (not (= main_~nondetString1~0.base main_~nondetString2~0.base))), 2205#(and (or (<= 3 (+ main_~nondetString1~0.offset (select |#length| main_~nondetString1~0.base))) (= 0 (select (select (store |#memory_int| main_~nondetString2~0.base (store (select |#memory_int| main_~nondetString2~0.base) (+ main_~length2~0 main_~nondetString2~0.offset (- 1)) 0)) main_~nondetString1~0.base) 1)) (<= (+ main_~nondetString1~0.offset (select |#length| main_~nondetString1~0.base)) 1)) (= 0 main_~nondetString1~0.offset) (not (= main_~nondetString1~0.base main_~nondetString2~0.base))), 2206#(and (= 0 |cstrncmp_#in~s1.offset|) (or (<= (select |#length| |cstrncmp_#in~s1.base|) 1) (= 0 (select (select |#memory_int| |cstrncmp_#in~s1.base|) 1)) (<= 3 (select |#length| |cstrncmp_#in~s1.base|)))), 2207#(and (or (= 0 (select (select |#memory_int| cstrncmp_~s1.base) 1)) (<= (select |#length| cstrncmp_~s1.base) 1) (<= 3 (select |#length| cstrncmp_~s1.base))) (= 0 cstrncmp_~s1.offset))] [2018-02-02 09:50:11,773 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:11,773 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-02-02 09:50:11,773 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-02-02 09:50:11,774 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2018-02-02 09:50:11,774 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 15 states. [2018-02-02 09:50:12,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:12,112 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2018-02-02 09:50:12,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-02-02 09:50:12,113 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2018-02-02 09:50:12,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:12,114 INFO L225 Difference]: With dead ends: 53 [2018-02-02 09:50:12,114 INFO L226 Difference]: Without dead ends: 53 [2018-02-02 09:50:12,114 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2018-02-02 09:50:12,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-02-02 09:50:12,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-02-02 09:50:12,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-02-02 09:50:12,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-02-02 09:50:12,116 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 38 [2018-02-02 09:50:12,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:12,116 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-02-02 09:50:12,116 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-02-02 09:50:12,116 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-02-02 09:50:12,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-02-02 09:50:12,117 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:12,117 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:50:12,117 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:12,117 INFO L82 PathProgramCache]: Analyzing trace with hash 244726527, now seen corresponding path program 2 times [2018-02-02 09:50:12,118 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:12,134 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:12,456 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:12,457 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-02 09:50:12,457 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-02-02 09:50:12,457 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:12,458 INFO L182 omatonBuilderFactory]: Interpolants [2338#true, 2339#false, 2340#(and (= 0 |main_#t~malloc12.offset|) (= main_~length2~0 (select |#length| |main_#t~malloc12.base|))), 2341#(and (= 0 main_~nondetString2~0.offset) (= main_~length2~0 (select |#length| main_~nondetString2~0.base))), 2342#(and (= 0 main_~nondetString2~0.offset) (or (= 0 (select (select |#memory_int| main_~nondetString2~0.base) 1)) (<= (+ main_~nondetString2~0.offset (select |#length| main_~nondetString2~0.base)) 1) (<= 3 (+ main_~nondetString2~0.offset (select |#length| main_~nondetString2~0.base))))), 2343#(and (or (<= 3 (select |#length| |cstrncmp_#in~s2.base|)) (= 0 (select (select |#memory_int| |cstrncmp_#in~s2.base|) 1)) (<= (select |#length| |cstrncmp_#in~s2.base|) 1)) (= 0 |cstrncmp_#in~s2.offset|)), 2344#(and (or (<= 3 (select |#length| cstrncmp_~s2.base)) (= 0 (select (select |#memory_int| cstrncmp_~s2.base) 1)) (<= (select |#length| cstrncmp_~s2.base) 1)) (= 0 cstrncmp_~s2.offset)), 2345#(and (<= (+ |cstrncmp_#t~post1.offset| 1) cstrncmp_~s2.offset) (= |cstrncmp_#t~post1.offset| 0) (or (<= (+ (select |#length| |cstrncmp_#t~post1.base|) |cstrncmp_#t~post1.offset|) cstrncmp_~s2.offset) (and (<= cstrncmp_~s2.offset (+ |cstrncmp_#t~post1.offset| 1)) (= 0 (select (select |#memory_int| cstrncmp_~s2.base) 1))) (<= (+ cstrncmp_~s2.offset 2) (+ (select |#length| |cstrncmp_#t~post1.base|) |cstrncmp_#t~post1.offset|))) (= |cstrncmp_#t~post1.base| cstrncmp_~s2.base)), 2346#(and (or (<= (+ cstrncmp_~s2.offset 2) (select |#length| cstrncmp_~s2.base)) (<= (select |#length| cstrncmp_~s2.base) cstrncmp_~s2.offset) (and (<= cstrncmp_~s2.offset 1) (= 0 (select (select |#memory_int| cstrncmp_~s2.base) 1)))) (<= 1 cstrncmp_~s2.offset)), 2347#(and (or (<= (+ cstrncmp_~s2.offset 2) (select |#length| cstrncmp_~s2.base)) (and (<= cstrncmp_~s2.offset 1) (= 0 (select (select |#memory_int| cstrncmp_~s2.base) 1)) (= (select (select |#memory_int| cstrncmp_~s1.base) cstrncmp_~s1.offset) |cstrncmp_#t~mem2|)) (<= (select |#length| cstrncmp_~s2.base) cstrncmp_~s2.offset)) (<= 1 cstrncmp_~s2.offset)), 2348#(and (<= 2 cstrncmp_~s2.offset) (or (<= (select |#length| |cstrncmp_#t~post1.base|) |cstrncmp_#t~post1.offset|) (and (= 1 |cstrncmp_#t~post1.offset|) (= 0 (select (select |#memory_int| |cstrncmp_#t~post1.base|) |cstrncmp_#t~post1.offset|)) (= (select (select |#memory_int| cstrncmp_~s1.base) cstrncmp_~s1.offset) |cstrncmp_#t~mem2|)) (<= (+ cstrncmp_~s2.offset 1) (select |#length| cstrncmp_~s2.base)))), 2349#(and (<= 2 cstrncmp_~s2.offset) (or (<= (+ cstrncmp_~s2.offset 1) (select |#length| cstrncmp_~s2.base)) (and (= 0 |cstrncmp_#t~mem3|) (= (select (select |#memory_int| cstrncmp_~s1.base) cstrncmp_~s1.offset) |cstrncmp_#t~mem2|)))), 2350#(and (<= 2 cstrncmp_~s2.offset) (or (<= (+ cstrncmp_~s2.offset 1) (select |#length| cstrncmp_~s2.base)) (= 0 (select (select |#memory_int| |cstrncmp_#t~post7.base|) |cstrncmp_#t~post7.offset|)))), 2351#(and (<= 2 cstrncmp_~s2.offset) (or (= 0 |cstrncmp_#t~mem8|) (<= (+ cstrncmp_~s2.offset 1) (select |#length| cstrncmp_~s2.base)))), 2352#(and (<= 2 cstrncmp_~s2.offset) (<= (+ cstrncmp_~s2.offset 1) (select |#length| cstrncmp_~s2.base))), 2353#(and (<= 2 |cstrncmp_#t~post1.offset|) (<= (+ |cstrncmp_#t~post1.offset| 1) (select |#length| |cstrncmp_#t~post1.base|)))] [2018-02-02 09:50:12,458 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:12,458 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-02-02 09:50:12,458 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-02-02 09:50:12,459 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2018-02-02 09:50:12,459 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 16 states. [2018-02-02 09:50:12,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:12,830 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2018-02-02 09:50:12,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-02-02 09:50:12,830 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 40 [2018-02-02 09:50:12,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:12,831 INFO L225 Difference]: With dead ends: 52 [2018-02-02 09:50:12,831 INFO L226 Difference]: Without dead ends: 52 [2018-02-02 09:50:12,832 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2018-02-02 09:50:12,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-02-02 09:50:12,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2018-02-02 09:50:12,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-02-02 09:50:12,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-02-02 09:50:12,833 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 40 [2018-02-02 09:50:12,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:12,834 INFO L432 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-02-02 09:50:12,834 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-02-02 09:50:12,834 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-02-02 09:50:12,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-02-02 09:50:12,836 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:12,836 INFO L351 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:50:12,836 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:12,836 INFO L82 PathProgramCache]: Analyzing trace with hash -688841486, now seen corresponding path program 3 times [2018-02-02 09:50:12,837 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:12,853 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:13,015 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-02-02 09:50:13,015 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-02 09:50:13,015 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-02-02 09:50:13,015 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:13,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:13,015 INFO L182 omatonBuilderFactory]: Interpolants [2481#true, 2482#false, 2483#(and (= main_~length1~0 (select |#length| |main_#t~malloc11.base|)) (= (select |#valid| |main_#t~malloc11.base|) 1) (= 0 |main_#t~malloc11.offset|)), 2484#(and (= main_~length1~0 (select |#length| main_~nondetString1~0.base)) (= (select |#valid| main_~nondetString1~0.base) 1) (= main_~nondetString1~0.offset 0)), 2485#(and (not (= main_~nondetString1~0.base |main_#t~malloc12.base|)) (= main_~length1~0 (select |#length| main_~nondetString1~0.base)) (= main_~nondetString1~0.offset 0)), 2486#(and (= main_~length1~0 (select |#length| main_~nondetString1~0.base)) (not (= main_~nondetString1~0.base main_~nondetString2~0.base)) (= main_~nondetString1~0.offset 0)), 2487#(and (not (= main_~nondetString1~0.base main_~nondetString2~0.base)) (= 0 (select (select (store |#memory_int| main_~nondetString2~0.base (store (select |#memory_int| main_~nondetString2~0.base) (+ main_~length2~0 main_~nondetString2~0.offset (- 1)) 0)) main_~nondetString1~0.base) (+ (select |#length| main_~nondetString1~0.base) (+ main_~nondetString1~0.offset (- 1))))) (= main_~nondetString1~0.offset 0)), 2488#(= 0 (select (select |#memory_int| |cstrncmp_#in~s1.base|) (+ (select |#length| |cstrncmp_#in~s1.base|) (- 1)))), 2489#(= 0 (select (select |#memory_int| cstrncmp_~s1.base) (+ (select |#length| cstrncmp_~s1.base) (- 1)))), 2490#(or (and (= (select |#length| |cstrncmp_#t~post7.base|) (select |#length| cstrncmp_~s1.base)) (<= (+ |cstrncmp_#t~post7.offset| 1) cstrncmp_~s1.offset) (or (<= (+ cstrncmp_~s1.offset 1) (select |#length| |cstrncmp_#t~post7.base|)) (<= (select |#length| |cstrncmp_#t~post7.base|) |cstrncmp_#t~post7.offset|))) (= 0 (select (select |#memory_int| |cstrncmp_#t~post7.base|) |cstrncmp_#t~post7.offset|))), 2491#(or (= 0 |cstrncmp_#t~mem8|) (and (<= 1 cstrncmp_~s1.offset) (<= (+ cstrncmp_~s1.offset 1) (select |#length| cstrncmp_~s1.base)))), 2492#(and (<= 1 cstrncmp_~s1.offset) (<= (+ cstrncmp_~s1.offset 1) (select |#length| cstrncmp_~s1.base)))] [2018-02-02 09:50:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-02-02 09:50:13,016 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-02-02 09:50:13,016 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-02-02 09:50:13,016 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-02-02 09:50:13,016 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 12 states. [2018-02-02 09:50:13,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:13,179 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2018-02-02 09:50:13,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-02 09:50:13,179 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2018-02-02 09:50:13,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:13,180 INFO L225 Difference]: With dead ends: 50 [2018-02-02 09:50:13,180 INFO L226 Difference]: Without dead ends: 50 [2018-02-02 09:50:13,180 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2018-02-02 09:50:13,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-02-02 09:50:13,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-02-02 09:50:13,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-02-02 09:50:13,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2018-02-02 09:50:13,181 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 47 [2018-02-02 09:50:13,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:13,181 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2018-02-02 09:50:13,181 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-02-02 09:50:13,181 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2018-02-02 09:50:13,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-02-02 09:50:13,182 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:50:13,182 INFO L351 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:50:13,182 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncmpErr1RequiresViolation, cstrncmpErr5RequiresViolation, cstrncmpErr6RequiresViolation, cstrncmpErr0RequiresViolation, cstrncmpErr4RequiresViolation, cstrncmpErr7RequiresViolation, cstrncmpErr2RequiresViolation, cstrncmpErr3RequiresViolation, cstrncmpErr8RequiresViolation, cstrncmpErr9RequiresViolation]=== [2018-02-02 09:50:13,182 INFO L82 PathProgramCache]: Analyzing trace with hash -551704813, now seen corresponding path program 3 times [2018-02-02 09:50:13,182 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 09:50:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:50:13,194 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:50:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-02-02 09:50:13,358 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-02 09:50:13,358 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-02-02 09:50:13,358 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 09:50:13,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:50:13,358 INFO L182 omatonBuilderFactory]: Interpolants [2609#true, 2610#false, 2611#(and (= 0 |main_#t~malloc12.offset|) (= main_~length2~0 (select |#length| |main_#t~malloc12.base|))), 2612#(and (= main_~nondetString2~0.offset 0) (= main_~length2~0 (select |#length| main_~nondetString2~0.base))), 2613#(and (= main_~nondetString2~0.offset 0) (= 0 (select (select |#memory_int| main_~nondetString2~0.base) (+ (select |#length| main_~nondetString2~0.base) (+ main_~nondetString2~0.offset (- 1)))))), 2614#(= 0 (select (select |#memory_int| |cstrncmp_#in~s2.base|) (+ (select |#length| |cstrncmp_#in~s2.base|) (- 1)))), 2615#(= 0 (select (select |#memory_int| cstrncmp_~s2.base) (+ (select |#length| cstrncmp_~s2.base) (- 1)))), 2616#(and (= |cstrncmp_#t~post1.base| cstrncmp_~s2.base) (= 0 (select (select |#memory_int| cstrncmp_~s2.base) (+ (select |#length| |cstrncmp_#t~post1.base|) (- 1))))), 2617#(and (= 0 (select (select |#memory_int| cstrncmp_~s2.base) (+ (select |#length| cstrncmp_~s2.base) (- 1)))) (= (select (select |#memory_int| cstrncmp_~s1.base) cstrncmp_~s1.offset) |cstrncmp_#t~mem2|)), 2618#(or (and (= 0 (select (select |#memory_int| |cstrncmp_#t~post1.base|) |cstrncmp_#t~post1.offset|)) (= (select (select |#memory_int| cstrncmp_~s1.base) cstrncmp_~s1.offset) |cstrncmp_#t~mem2|)) (and (<= (+ |cstrncmp_#t~post1.offset| 1) cstrncmp_~s2.offset) (or (<= (select |#length| |cstrncmp_#t~post1.base|) |cstrncmp_#t~post1.offset|) (<= (+ cstrncmp_~s2.offset 1) (select |#length| cstrncmp_~s2.base))))), 2619#(or (and (<= (+ cstrncmp_~s2.offset 1) (select |#length| cstrncmp_~s2.base)) (<= 1 cstrncmp_~s2.offset)) (and (= 0 |cstrncmp_#t~mem3|) (= (select (select |#memory_int| cstrncmp_~s1.base) cstrncmp_~s1.offset) |cstrncmp_#t~mem2|))), 2620#(or (and (<= (+ cstrncmp_~s2.offset 1) (select |#length| cstrncmp_~s2.base)) (<= 1 cstrncmp_~s2.offset)) (= 0 (select (select |#memory_int| |cstrncmp_#t~post7.base|) |cstrncmp_#t~post7.offset|))), 2621#(or (= 0 |cstrncmp_#t~mem8|) (and (<= (+ cstrncmp_~s2.offset 1) (select |#length| cstrncmp_~s2.base)) (<= 1 cstrncmp_~s2.offset))), 2622#(and (<= (+ cstrncmp_~s2.offset 1) (select |#length| cstrncmp_~s2.base)) (<= 1 cstrncmp_~s2.offset)), 2623#(and (<= 1 |cstrncmp_#t~post1.offset|) (<= (+ |cstrncmp_#t~post1.offset| 1) (select |#length| |cstrncmp_#t~post1.base|)))] [2018-02-02 09:50:13,358 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-02-02 09:50:13,359 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-02-02 09:50:13,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-02-02 09:50:13,359 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2018-02-02 09:50:13,359 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 15 states. [2018-02-02 09:50:13,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:50:13,664 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2018-02-02 09:50:13,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-02-02 09:50:13,664 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 49 [2018-02-02 09:50:13,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:50:13,665 INFO L225 Difference]: With dead ends: 49 [2018-02-02 09:50:13,665 INFO L226 Difference]: Without dead ends: 0 [2018-02-02 09:50:13,665 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2018-02-02 09:50:13,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-02 09:50:13,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-02 09:50:13,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-02 09:50:13,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-02 09:50:13,666 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2018-02-02 09:50:13,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:50:13,666 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-02 09:50:13,666 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-02-02 09:50:13,666 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-02 09:50:13,666 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-02 09:50:13,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:50:13 BoogieIcfgContainer [2018-02-02 09:50:13,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 09:50:13,670 INFO L168 Benchmark]: Toolchain (without parser) took 6301.00 ms. Allocated memory was 395.3 MB in the beginning and 715.7 MB in the end (delta: 320.3 MB). Free memory was 353.3 MB in the beginning and 418.6 MB in the end (delta: -65.3 MB). Peak memory consumption was 255.1 MB. Max. memory is 5.3 GB. [2018-02-02 09:50:13,671 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 395.3 MB. Free memory is still 358.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 09:50:13,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.27 ms. Allocated memory is still 395.3 MB. Free memory was 352.0 MB in the beginning and 341.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-02 09:50:13,671 INFO L168 Benchmark]: Boogie Preprocessor took 28.99 ms. Allocated memory is still 395.3 MB. Free memory was 341.4 MB in the beginning and 340.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-02 09:50:13,671 INFO L168 Benchmark]: RCFGBuilder took 206.32 ms. Allocated memory is still 395.3 MB. Free memory was 340.1 MB in the beginning and 318.9 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 5.3 GB. [2018-02-02 09:50:13,671 INFO L168 Benchmark]: TraceAbstraction took 5903.88 ms. Allocated memory was 395.3 MB in the beginning and 715.7 MB in the end (delta: 320.3 MB). Free memory was 318.9 MB in the beginning and 418.6 MB in the end (delta: -99.7 MB). Peak memory consumption was 220.6 MB. Max. memory is 5.3 GB. [2018-02-02 09:50:13,672 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 395.3 MB. Free memory is still 358.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 159.27 ms. Allocated memory is still 395.3 MB. Free memory was 352.0 MB in the beginning and 341.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 28.99 ms. Allocated memory is still 395.3 MB. Free memory was 341.4 MB in the beginning and 340.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 206.32 ms. Allocated memory is still 395.3 MB. Free memory was 340.1 MB in the beginning and 318.9 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 5903.88 ms. Allocated memory was 395.3 MB in the beginning and 715.7 MB in the end (delta: 320.3 MB). Free memory was 318.9 MB in the beginning and 418.6 MB in the end (delta: -99.7 MB). Peak memory consumption was 220.6 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 553]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 15 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 58 locations, 15 error locations. SAFE Result, 5.8s OverallTime, 22 OverallIterations, 4 TraceHistogramMax, 3.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 745 SDtfs, 1008 SDslu, 2530 SDs, 0 SdLazy, 2255 SolverSat, 142 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 303 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 36/121 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 22 MinimizatonAttempts, 41 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 595 NumberOfCodeBlocks, 595 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 573 ConstructedInterpolants, 0 QuantifiedInterpolants, 152682 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 14 PerfectInterpolantSequences, 36/121 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrncmp-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_09-50-13-677.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrncmp-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_09-50-13-677.csv Received shutdown request...