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/list-ext-properties/test-0504_1_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 10:09:46,499 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 10:09:46,501 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 10:09:46,514 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 10:09:46,514 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 10:09:46,515 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 10:09:46,515 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 10:09:46,517 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 10:09:46,519 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 10:09:46,519 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 10:09:46,520 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 10:09:46,520 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 10:09:46,521 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 10:09:46,522 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 10:09:46,523 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 10:09:46,525 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 10:09:46,526 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 10:09:46,528 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 10:09:46,529 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 10:09:46,530 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 10:09:46,532 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 10:09:46,536 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 10:09:46,536 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 10:09:46,537 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 10:09:46,546 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 10:09:46,547 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 10:09:46,547 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 10:09:46,548 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 10:09:46,548 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 10:09:46,548 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 10:09:46,548 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 10:09:46,548 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 10:09:46,548 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 10:09:46,548 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 10:09:46,548 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 10:09:46,549 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 10:09:46,549 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 10:09:46,549 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 10:09:46,549 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 10:09:46,549 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 10:09:46,549 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 10:09:46,549 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 10:09:46,549 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 10:09:46,549 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 10:09:46,550 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 10:09:46,550 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 10:09:46,550 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-02-02 10:09:46,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 10:09:46,585 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 10:09:46,588 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 10:09:46,589 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 10:09:46,589 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 10:09:46,590 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/test-0504_1_true-valid-memsafety.i [2018-02-02 10:09:46,707 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 10:09:46,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 10:09:46,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 10:09:46,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 10:09:46,714 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 10:09:46,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 10:09:46" (1/1) ... [2018-02-02 10:09:46,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5858f23f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:09:46, skipping insertion in model container [2018-02-02 10:09:46,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 10:09:46" (1/1) ... [2018-02-02 10:09:46,728 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 10:09:46,757 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 10:09:46,854 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 10:09:46,874 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 10:09:46,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:09:46 WrapperNode [2018-02-02 10:09:46,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 10:09:46,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 10:09:46,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 10:09:46,882 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 10:09:46,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:09:46" (1/1) ... [2018-02-02 10:09:46,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:09:46" (1/1) ... [2018-02-02 10:09:46,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:09:46" (1/1) ... [2018-02-02 10:09:46,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:09:46" (1/1) ... [2018-02-02 10:09:46,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:09:46" (1/1) ... [2018-02-02 10:09:46,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:09:46" (1/1) ... [2018-02-02 10:09:46,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:09:46" (1/1) ... [2018-02-02 10:09:46,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 10:09:46,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 10:09:46,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 10:09:46,918 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 10:09:46,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:09:46" (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 10:09:46,961 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 10:09:46,962 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 10:09:46,962 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 10:09:46,962 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-02 10:09:46,962 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-02 10:09:46,962 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 10:09:46,962 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 10:09:46,962 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 10:09:46,963 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 10:09:46,963 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 10:09:46,963 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-02 10:09:46,963 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-02 10:09:46,963 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-02-02 10:09:46,963 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 10:09:46,963 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 10:09:46,963 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 10:09:46,963 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 10:09:47,303 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 10:09:47,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 10:09:47 BoogieIcfgContainer [2018-02-02 10:09:47,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 10:09:47,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 10:09:47,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 10:09:47,306 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 10:09:47,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 10:09:46" (1/3) ... [2018-02-02 10:09:47,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3f8443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 10:09:47, skipping insertion in model container [2018-02-02 10:09:47,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:09:46" (2/3) ... [2018-02-02 10:09:47,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3f8443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 10:09:47, skipping insertion in model container [2018-02-02 10:09:47,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 10:09:47" (3/3) ... [2018-02-02 10:09:47,309 INFO L107 eAbstractionObserver]: Analyzing ICFG test-0504_1_true-valid-memsafety.i [2018-02-02 10:09:47,315 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-02 10:09:47,322 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 41 error locations. [2018-02-02 10:09:47,348 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 10:09:47,348 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 10:09:47,348 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-02-02 10:09:47,348 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-02 10:09:47,348 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 10:09:47,348 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 10:09:47,349 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 10:09:47,349 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 10:09:47,350 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 10:09:47,360 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2018-02-02 10:09:47,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-02-02 10:09:47,369 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:47,369 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:09:47,370 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:47,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1548810554, now seen corresponding path program 1 times [2018-02-02 10:09:47,420 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:47,455 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:47,478 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 10:09:47,480 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:09:47,481 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 10:09:47,482 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:47,482 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 10:09:47,482 INFO L182 omatonBuilderFactory]: Interpolants [104#true, 105#false] [2018-02-02 10:09:47,482 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 10:09:47,483 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-02-02 10:09:47,495 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-02-02 10:09:47,496 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-02-02 10:09:47,498 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 2 states. [2018-02-02 10:09:47,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:47,568 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2018-02-02 10:09:47,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-02-02 10:09:47,570 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-02-02 10:09:47,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:47,579 INFO L225 Difference]: With dead ends: 101 [2018-02-02 10:09:47,579 INFO L226 Difference]: Without dead ends: 98 [2018-02-02 10:09:47,581 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-02-02 10:09:47,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-02-02 10:09:47,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-02-02 10:09:47,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-02-02 10:09:47,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2018-02-02 10:09:47,610 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 10 [2018-02-02 10:09:47,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:47,610 INFO L432 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2018-02-02 10:09:47,610 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-02-02 10:09:47,610 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2018-02-02 10:09:47,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-02 10:09:47,610 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:47,610 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:09:47,610 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:47,611 INFO L82 PathProgramCache]: Analyzing trace with hash -2085004617, now seen corresponding path program 1 times [2018-02-02 10:09:47,612 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:47,627 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:47,662 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 10:09:47,662 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:09:47,662 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 10:09:47,663 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:47,663 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 10:09:47,663 INFO L182 omatonBuilderFactory]: Interpolants [305#true, 306#false, 307#(= main_~c1~0 0)] [2018-02-02 10:09:47,664 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 10:09:47,667 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 10:09:47,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 10:09:47,667 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 10:09:47,668 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand 3 states. [2018-02-02 10:09:47,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:47,706 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2018-02-02 10:09:47,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 10:09:47,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-02-02 10:09:47,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:47,708 INFO L225 Difference]: With dead ends: 107 [2018-02-02 10:09:47,708 INFO L226 Difference]: Without dead ends: 107 [2018-02-02 10:09:47,709 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 10:09:47,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-02-02 10:09:47,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2018-02-02 10:09:47,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-02-02 10:09:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 113 transitions. [2018-02-02 10:09:47,716 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 113 transitions. Word has length 13 [2018-02-02 10:09:47,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:47,716 INFO L432 AbstractCegarLoop]: Abstraction has 104 states and 113 transitions. [2018-02-02 10:09:47,716 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 10:09:47,716 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 113 transitions. [2018-02-02 10:09:47,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 10:09:47,717 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:47,717 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:09:47,717 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:47,717 INFO L82 PathProgramCache]: Analyzing trace with hash -211715870, now seen corresponding path program 1 times [2018-02-02 10:09:47,718 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:47,732 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:47,766 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 10:09:47,766 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:09:47,767 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 10:09:47,767 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:47,767 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 10:09:47,767 INFO L182 omatonBuilderFactory]: Interpolants [519#true, 520#false, 521#(= 1 (select |#valid| |main_#t~malloc3.base|)), 522#(= 1 (select |#valid| main_~x~0.base))] [2018-02-02 10:09:47,767 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 10:09:47,768 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 10:09:47,768 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 10:09:47,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 10:09:47,768 INFO L87 Difference]: Start difference. First operand 104 states and 113 transitions. Second operand 4 states. [2018-02-02 10:09:47,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:47,888 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2018-02-02 10:09:47,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 10:09:47,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-02-02 10:09:47,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:47,891 INFO L225 Difference]: With dead ends: 127 [2018-02-02 10:09:47,891 INFO L226 Difference]: Without dead ends: 127 [2018-02-02 10:09:47,891 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 10:09:47,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-02-02 10:09:47,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 96. [2018-02-02 10:09:47,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-02-02 10:09:47,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2018-02-02 10:09:47,898 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 14 [2018-02-02 10:09:47,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:47,898 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2018-02-02 10:09:47,898 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 10:09:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2018-02-02 10:09:47,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 10:09:47,899 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:47,899 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:09:47,899 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:47,899 INFO L82 PathProgramCache]: Analyzing trace with hash -211715869, now seen corresponding path program 1 times [2018-02-02 10:09:47,900 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:47,909 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:47,962 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 10:09:47,962 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:09:47,962 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 10:09:47,962 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:47,962 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 10:09:47,963 INFO L182 omatonBuilderFactory]: Interpolants [752#(and (= (select |#length| main_~x~0.base) 20) (= main_~x~0.offset 0)), 749#true, 750#false, 751#(and (= 20 (select |#length| |main_#t~malloc3.base|)) (= 0 |main_#t~malloc3.offset|))] [2018-02-02 10:09:47,963 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 10:09:47,963 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 10:09:47,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 10:09:47,963 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 10:09:47,964 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand 4 states. [2018-02-02 10:09:48,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:48,050 INFO L93 Difference]: Finished difference Result 138 states and 154 transitions. [2018-02-02 10:09:48,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 10:09:48,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-02-02 10:09:48,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:48,052 INFO L225 Difference]: With dead ends: 138 [2018-02-02 10:09:48,052 INFO L226 Difference]: Without dead ends: 138 [2018-02-02 10:09:48,053 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 10:09:48,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-02-02 10:09:48,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 99. [2018-02-02 10:09:48,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-02-02 10:09:48,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2018-02-02 10:09:48,058 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 14 [2018-02-02 10:09:48,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:48,058 INFO L432 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2018-02-02 10:09:48,058 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 10:09:48,058 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2018-02-02 10:09:48,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 10:09:48,059 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:48,059 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:09:48,059 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:48,059 INFO L82 PathProgramCache]: Analyzing trace with hash -210634142, now seen corresponding path program 1 times [2018-02-02 10:09:48,060 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:48,067 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:48,080 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 10:09:48,081 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:09:48,081 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 10:09:48,081 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:48,081 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 10:09:48,081 INFO L182 omatonBuilderFactory]: Interpolants [993#true, 994#false, 995#(= |#valid| |old(#valid)|)] [2018-02-02 10:09:48,081 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 10:09:48,082 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 10:09:48,082 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 10:09:48,082 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 10:09:48,082 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand 3 states. [2018-02-02 10:09:48,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:48,126 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2018-02-02 10:09:48,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 10:09:48,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-02-02 10:09:48,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:48,127 INFO L225 Difference]: With dead ends: 102 [2018-02-02 10:09:48,127 INFO L226 Difference]: Without dead ends: 98 [2018-02-02 10:09:48,127 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 10:09:48,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-02-02 10:09:48,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2018-02-02 10:09:48,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-02-02 10:09:48,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2018-02-02 10:09:48,131 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 14 [2018-02-02 10:09:48,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:48,132 INFO L432 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2018-02-02 10:09:48,132 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 10:09:48,132 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2018-02-02 10:09:48,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-02 10:09:48,133 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:48,133 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 10:09:48,133 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:48,133 INFO L82 PathProgramCache]: Analyzing trace with hash 479661366, now seen corresponding path program 1 times [2018-02-02 10:09:48,134 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:48,148 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:48,195 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 10:09:48,195 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:09:48,195 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 10:09:48,195 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:48,196 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 10:09:48,196 INFO L182 omatonBuilderFactory]: Interpolants [1195#true, 1196#false, 1197#(and (= main_~first~0.offset 0) (= main_~first~0.base 0))] [2018-02-02 10:09:48,196 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 10:09:48,196 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 10:09:48,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 10:09:48,197 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 10:09:48,197 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand 3 states. [2018-02-02 10:09:48,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:48,206 INFO L93 Difference]: Finished difference Result 143 states and 160 transitions. [2018-02-02 10:09:48,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 10:09:48,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-02-02 10:09:48,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:48,207 INFO L225 Difference]: With dead ends: 143 [2018-02-02 10:09:48,207 INFO L226 Difference]: Without dead ends: 143 [2018-02-02 10:09:48,207 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 10:09:48,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-02-02 10:09:48,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 125. [2018-02-02 10:09:48,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-02-02 10:09:48,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 152 transitions. [2018-02-02 10:09:48,212 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 152 transitions. Word has length 26 [2018-02-02 10:09:48,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:48,212 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 152 transitions. [2018-02-02 10:09:48,212 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 10:09:48,212 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 152 transitions. [2018-02-02 10:09:48,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-02-02 10:09:48,213 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:48,213 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, 1] [2018-02-02 10:09:48,213 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:48,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1985366289, now seen corresponding path program 1 times [2018-02-02 10:09:48,214 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:48,233 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:48,321 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 10:09:48,321 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:09:48,321 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 10:09:48,321 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:09:48,322 INFO L182 omatonBuilderFactory]: Interpolants [1466#true, 1467#false, 1468#(and (= 20 (select |#length| |main_#t~malloc3.base|)) (= 0 |main_#t~malloc3.offset|)), 1469#(and (= main_~x~0.offset 0) (= 20 (select |#length| main_~x~0.base))), 1470#(and (= 1 (select |#valid| main_~x~0.base)) (= main_~x~0.offset 0) (= 20 (select |#length| main_~x~0.base)))] [2018-02-02 10:09:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:09:48,322 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 10:09:48,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 10:09:48,322 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-02-02 10:09:48,323 INFO L87 Difference]: Start difference. First operand 125 states and 152 transitions. Second operand 5 states. [2018-02-02 10:09:48,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:48,444 INFO L93 Difference]: Finished difference Result 225 states and 258 transitions. [2018-02-02 10:09:48,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 10:09:48,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-02-02 10:09:48,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:48,445 INFO L225 Difference]: With dead ends: 225 [2018-02-02 10:09:48,445 INFO L226 Difference]: Without dead ends: 225 [2018-02-02 10:09:48,446 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-02-02 10:09:48,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-02-02 10:09:48,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 114. [2018-02-02 10:09:48,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-02-02 10:09:48,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 134 transitions. [2018-02-02 10:09:48,449 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 134 transitions. Word has length 27 [2018-02-02 10:09:48,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:48,449 INFO L432 AbstractCegarLoop]: Abstraction has 114 states and 134 transitions. [2018-02-02 10:09:48,449 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 10:09:48,449 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 134 transitions. [2018-02-02 10:09:48,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-02-02 10:09:48,449 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:48,449 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, 1, 1] [2018-02-02 10:09:48,450 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:48,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1416812824, now seen corresponding path program 1 times [2018-02-02 10:09:48,450 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:48,458 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:48,475 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 10:09:48,475 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:09:48,475 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 10:09:48,475 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:48,475 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 10:09:48,475 INFO L182 omatonBuilderFactory]: Interpolants [1815#true, 1816#false, 1817#(= 1 (select |#valid| |main_#t~malloc12.base|)), 1818#(= 1 (select |#valid| main_~y~0.base))] [2018-02-02 10:09:48,476 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 10:09:48,476 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 10:09:48,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 10:09:48,476 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 10:09:48,476 INFO L87 Difference]: Start difference. First operand 114 states and 134 transitions. Second operand 4 states. [2018-02-02 10:09:48,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:48,571 INFO L93 Difference]: Finished difference Result 171 states and 196 transitions. [2018-02-02 10:09:48,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 10:09:48,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-02-02 10:09:48,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:48,572 INFO L225 Difference]: With dead ends: 171 [2018-02-02 10:09:48,572 INFO L226 Difference]: Without dead ends: 171 [2018-02-02 10:09:48,572 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 10:09:48,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-02-02 10:09:48,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 110. [2018-02-02 10:09:48,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-02-02 10:09:48,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2018-02-02 10:09:48,574 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 28 [2018-02-02 10:09:48,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:48,575 INFO L432 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2018-02-02 10:09:48,575 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 10:09:48,575 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2018-02-02 10:09:48,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-02-02 10:09:48,575 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:48,575 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, 1, 1] [2018-02-02 10:09:48,575 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:48,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1416812825, now seen corresponding path program 1 times [2018-02-02 10:09:48,576 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:48,591 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:48,644 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 10:09:48,644 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:09:48,645 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 10:09:48,645 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:48,645 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 10:09:48,645 INFO L182 omatonBuilderFactory]: Interpolants [2102#true, 2103#false, 2104#(and (= 0 |main_#t~malloc12.offset|) (= 12 (select |#length| |main_#t~malloc12.base|))), 2105#(and (= main_~y~0.offset 0) (= (select |#length| main_~y~0.base) 12))] [2018-02-02 10:09:48,645 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 10:09:48,645 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 10:09:48,645 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 10:09:48,645 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 10:09:48,646 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand 4 states. [2018-02-02 10:09:48,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:48,731 INFO L93 Difference]: Finished difference Result 159 states and 180 transitions. [2018-02-02 10:09:48,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 10:09:48,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-02-02 10:09:48,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:48,733 INFO L225 Difference]: With dead ends: 159 [2018-02-02 10:09:48,733 INFO L226 Difference]: Without dead ends: 159 [2018-02-02 10:09:48,733 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 10:09:48,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-02-02 10:09:48,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 106. [2018-02-02 10:09:48,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-02-02 10:09:48,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 118 transitions. [2018-02-02 10:09:48,736 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 118 transitions. Word has length 28 [2018-02-02 10:09:48,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:48,736 INFO L432 AbstractCegarLoop]: Abstraction has 106 states and 118 transitions. [2018-02-02 10:09:48,736 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 10:09:48,736 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 118 transitions. [2018-02-02 10:09:48,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-02-02 10:09:48,737 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:48,737 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, 1, 1, 1, 1, 1] [2018-02-02 10:09:48,737 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:48,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1627264726, now seen corresponding path program 1 times [2018-02-02 10:09:48,738 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:48,750 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:48,818 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 10:09:48,818 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:09:48,818 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 10:09:48,818 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:48,819 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 10:09:48,819 INFO L182 omatonBuilderFactory]: Interpolants [2373#true, 2374#false, 2375#(= main_~x~0.base (select (store (select |#memory_$Pointer$.base| main_~x~0.base) (+ main_~x~0.offset 4) main_~x~0.base) main_~x~0.offset)), 2376#(= 1 (select |#valid| |main_#t~mem14.base|)), 2377#(= 1 (select |#valid| (select (select |#memory_$Pointer$.base| main_~y~0.base) main_~y~0.offset))), 2378#(= 1 (select |#valid| |main_#t~mem15.base|))] [2018-02-02 10:09:48,819 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 10:09:48,819 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 10:09:48,819 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 10:09:48,819 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 10:09:48,820 INFO L87 Difference]: Start difference. First operand 106 states and 118 transitions. Second operand 6 states. [2018-02-02 10:09:49,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:49,019 INFO L93 Difference]: Finished difference Result 185 states and 207 transitions. [2018-02-02 10:09:49,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 10:09:49,019 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-02-02 10:09:49,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:49,020 INFO L225 Difference]: With dead ends: 185 [2018-02-02 10:09:49,020 INFO L226 Difference]: Without dead ends: 185 [2018-02-02 10:09:49,021 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-02-02 10:09:49,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-02-02 10:09:49,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 130. [2018-02-02 10:09:49,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-02-02 10:09:49,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 148 transitions. [2018-02-02 10:09:49,024 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 148 transitions. Word has length 31 [2018-02-02 10:09:49,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:49,024 INFO L432 AbstractCegarLoop]: Abstraction has 130 states and 148 transitions. [2018-02-02 10:09:49,024 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 10:09:49,024 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 148 transitions. [2018-02-02 10:09:49,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-02-02 10:09:49,025 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:49,025 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, 1, 1, 1, 1, 1] [2018-02-02 10:09:49,025 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:49,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1627264727, now seen corresponding path program 1 times [2018-02-02 10:09:49,026 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:49,039 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:49,247 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 10:09:49,248 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:09:49,248 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-02-02 10:09:49,248 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:49,248 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 10:09:49,249 INFO L182 omatonBuilderFactory]: Interpolants [2704#(and (= (select |#length| main_~x~0.base) 20) (= 1 (select |#valid| main_~x~0.base)) (= 0 main_~x~0.offset)), 2705#(and (= (select |#length| main_~x~0.base) 20) (= main_~x~0.base (select (store (select |#memory_$Pointer$.base| main_~x~0.base) (+ main_~x~0.offset 4) main_~x~0.base) main_~x~0.offset)) (= 0 (select (store (select |#memory_$Pointer$.offset| main_~x~0.base) (+ main_~x~0.offset 4) main_~x~0.offset) main_~x~0.offset)) (= (select |#valid| main_~x~0.base) 1)), 2706#(and (not (= main_~x~0.base |main_#t~malloc12.base|)) (= main_~x~0.base (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset)) (<= 20 (select |#length| main_~x~0.base)) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset))), 2707#(and (= main_~x~0.base (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~x~0.offset)) (<= 20 (select |#length| main_~x~0.base)) (= 0 (select (select |#memory_$Pointer$.offset| main_~x~0.base) main_~x~0.offset))), 2708#(and (<= 20 (select |#length| |main_#t~mem14.base|)) (= 0 |main_#t~mem14.offset|)), 2709#(and (= 0 (select (select |#memory_$Pointer$.offset| main_~y~0.base) main_~y~0.offset)) (<= 20 (select |#length| (select (select |#memory_$Pointer$.base| main_~y~0.base) main_~y~0.offset)))), 2710#(and (<= 20 (select |#length| |main_#t~mem15.base|)) (= |main_#t~mem15.offset| 0)), 2700#true, 2701#false, 2702#(and (= 20 (select |#length| |main_#t~malloc3.base|)) (= 0 |main_#t~malloc3.offset|)), 2703#(and (= (select |#length| main_~x~0.base) 20) (= 0 main_~x~0.offset))] [2018-02-02 10:09:49,249 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 10:09:49,249 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-02-02 10:09:49,249 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-02-02 10:09:49,249 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-02-02 10:09:49,250 INFO L87 Difference]: Start difference. First operand 130 states and 148 transitions. Second operand 11 states. [2018-02-02 10:09:49,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:49,668 INFO L93 Difference]: Finished difference Result 234 states and 259 transitions. [2018-02-02 10:09:49,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-02-02 10:09:49,669 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2018-02-02 10:09:49,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:49,670 INFO L225 Difference]: With dead ends: 234 [2018-02-02 10:09:49,670 INFO L226 Difference]: Without dead ends: 234 [2018-02-02 10:09:49,670 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2018-02-02 10:09:49,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-02-02 10:09:49,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 130. [2018-02-02 10:09:49,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-02-02 10:09:49,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 146 transitions. [2018-02-02 10:09:49,674 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 146 transitions. Word has length 31 [2018-02-02 10:09:49,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:49,674 INFO L432 AbstractCegarLoop]: Abstraction has 130 states and 146 transitions. [2018-02-02 10:09:49,675 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-02-02 10:09:49,675 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 146 transitions. [2018-02-02 10:09:49,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-02-02 10:09:49,676 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:49,676 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, 1] [2018-02-02 10:09:49,679 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:49,679 INFO L82 PathProgramCache]: Analyzing trace with hash 414150462, now seen corresponding path program 1 times [2018-02-02 10:09:49,680 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:49,690 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:09:49,720 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:09:49,720 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 10:09:49,720 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:49,720 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 10:09:49,721 INFO L182 omatonBuilderFactory]: Interpolants [3096#true, 3097#false, 3098#(= 1 (select |#valid| main_~x~0.base)), 3099#(= 1 (select |#valid| main_~first~0.base))] [2018-02-02 10:09:49,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:09:49,721 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 10:09:49,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 10:09:49,722 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 10:09:49,722 INFO L87 Difference]: Start difference. First operand 130 states and 146 transitions. Second operand 4 states. [2018-02-02 10:09:49,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:49,813 INFO L93 Difference]: Finished difference Result 160 states and 176 transitions. [2018-02-02 10:09:49,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 10:09:49,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-02-02 10:09:49,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:49,815 INFO L225 Difference]: With dead ends: 160 [2018-02-02 10:09:49,815 INFO L226 Difference]: Without dead ends: 160 [2018-02-02 10:09:49,815 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 10:09:49,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-02-02 10:09:49,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 133. [2018-02-02 10:09:49,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-02-02 10:09:49,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 151 transitions. [2018-02-02 10:09:49,818 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 151 transitions. Word has length 32 [2018-02-02 10:09:49,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:49,818 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 151 transitions. [2018-02-02 10:09:49,819 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 10:09:49,819 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 151 transitions. [2018-02-02 10:09:49,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-02-02 10:09:49,819 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:49,819 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, 1] [2018-02-02 10:09:49,820 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:49,820 INFO L82 PathProgramCache]: Analyzing trace with hash 414150463, now seen corresponding path program 1 times [2018-02-02 10:09:49,820 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:49,830 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:49,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:09:49,874 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:09:49,874 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 10:09:49,874 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:49,875 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 10:09:49,875 INFO L182 omatonBuilderFactory]: Interpolants [3396#true, 3397#false, 3398#(and (= 20 (select |#length| |main_#t~malloc3.base|)) (= 0 |main_#t~malloc3.offset|)), 3399#(and (= 20 (select |#length| main_~x~0.base)) (= 0 main_~x~0.offset)), 3400#(and (= main_~first~0.offset 0) (= (select |#length| main_~first~0.base) 20))] [2018-02-02 10:09:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:09:49,875 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 10:09:49,875 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 10:09:49,875 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 10:09:49,876 INFO L87 Difference]: Start difference. First operand 133 states and 151 transitions. Second operand 5 states. [2018-02-02 10:09:49,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:49,998 INFO L93 Difference]: Finished difference Result 212 states and 242 transitions. [2018-02-02 10:09:49,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 10:09:49,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-02-02 10:09:49,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:49,999 INFO L225 Difference]: With dead ends: 212 [2018-02-02 10:09:49,999 INFO L226 Difference]: Without dead ends: 212 [2018-02-02 10:09:49,999 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-02-02 10:09:49,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-02-02 10:09:50,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 162. [2018-02-02 10:09:50,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-02-02 10:09:50,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 189 transitions. [2018-02-02 10:09:50,003 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 189 transitions. Word has length 32 [2018-02-02 10:09:50,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:50,003 INFO L432 AbstractCegarLoop]: Abstraction has 162 states and 189 transitions. [2018-02-02 10:09:50,004 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 10:09:50,004 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 189 transitions. [2018-02-02 10:09:50,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-02-02 10:09:50,004 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:50,005 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, 1, 1] [2018-02-02 10:09:50,005 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:50,005 INFO L82 PathProgramCache]: Analyzing trace with hash -46238021, now seen corresponding path program 1 times [2018-02-02 10:09:50,006 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:50,014 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:50,034 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 10:09:50,034 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-02 10:09:50,034 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-02-02 10:09:50,034 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:50,035 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 10:09:50,035 INFO L182 omatonBuilderFactory]: Interpolants [3781#true, 3782#false, 3783#(= main_~c1~0 0), 3784#(<= 1 main_~c1~0)] [2018-02-02 10:09:50,035 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 10:09:50,035 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 10:09:50,035 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 10:09:50,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 10:09:50,036 INFO L87 Difference]: Start difference. First operand 162 states and 189 transitions. Second operand 4 states. [2018-02-02 10:09:50,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:50,051 INFO L93 Difference]: Finished difference Result 162 states and 187 transitions. [2018-02-02 10:09:50,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 10:09:50,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-02-02 10:09:50,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:50,052 INFO L225 Difference]: With dead ends: 162 [2018-02-02 10:09:50,052 INFO L226 Difference]: Without dead ends: 162 [2018-02-02 10:09:50,053 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 10:09:50,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-02-02 10:09:50,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-02-02 10:09:50,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-02-02 10:09:50,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 187 transitions. [2018-02-02 10:09:50,056 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 187 transitions. Word has length 33 [2018-02-02 10:09:50,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:50,056 INFO L432 AbstractCegarLoop]: Abstraction has 162 states and 187 transitions. [2018-02-02 10:09:50,057 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 10:09:50,057 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 187 transitions. [2018-02-02 10:09:50,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-02-02 10:09:50,057 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:50,057 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, 1, 1, 1] [2018-02-02 10:09:50,057 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:50,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1433361569, now seen corresponding path program 1 times [2018-02-02 10:09:50,058 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:50,067 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-02-02 10:09:50,083 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:09:50,083 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 10:09:50,083 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:50,083 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 10:09:50,084 INFO L182 omatonBuilderFactory]: Interpolants [4112#(= 1 (select |#valid| main_~x~1.base)), 4109#true, 4110#false, 4111#(= main_~x~1.base main_~first~0.base)] [2018-02-02 10:09:50,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-02-02 10:09:50,084 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 10:09:50,084 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 10:09:50,084 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 10:09:50,084 INFO L87 Difference]: Start difference. First operand 162 states and 187 transitions. Second operand 4 states. [2018-02-02 10:09:50,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:50,138 INFO L93 Difference]: Finished difference Result 176 states and 203 transitions. [2018-02-02 10:09:50,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 10:09:50,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-02-02 10:09:50,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:50,139 INFO L225 Difference]: With dead ends: 176 [2018-02-02 10:09:50,140 INFO L226 Difference]: Without dead ends: 176 [2018-02-02 10:09:50,140 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 10:09:50,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-02-02 10:09:50,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 168. [2018-02-02 10:09:50,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-02-02 10:09:50,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 200 transitions. [2018-02-02 10:09:50,143 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 200 transitions. Word has length 34 [2018-02-02 10:09:50,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:50,143 INFO L432 AbstractCegarLoop]: Abstraction has 168 states and 200 transitions. [2018-02-02 10:09:50,143 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 10:09:50,144 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 200 transitions. [2018-02-02 10:09:50,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-02-02 10:09:50,144 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:50,144 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, 1, 1, 1] [2018-02-02 10:09:50,144 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:50,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1433361568, now seen corresponding path program 1 times [2018-02-02 10:09:50,145 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:50,153 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:50,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:09:50,212 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:09:50,212 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 10:09:50,212 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:50,213 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 10:09:50,213 INFO L182 omatonBuilderFactory]: Interpolants [4464#(and (= (select |#length| main_~x~1.base) 20) (= main_~x~1.offset 0)), 4459#true, 4460#false, 4461#(and (= 20 (select |#length| |main_#t~malloc3.base|)) (= 0 |main_#t~malloc3.offset|)), 4462#(and (= 20 (select |#length| main_~x~0.base)) (= 0 main_~x~0.offset)), 4463#(and (= 20 (select |#length| main_~first~0.base)) (= 0 main_~first~0.offset))] [2018-02-02 10:09:50,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:09:50,213 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 10:09:50,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 10:09:50,213 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 10:09:50,214 INFO L87 Difference]: Start difference. First operand 168 states and 200 transitions. Second operand 6 states. [2018-02-02 10:09:50,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:50,359 INFO L93 Difference]: Finished difference Result 250 states and 300 transitions. [2018-02-02 10:09:50,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 10:09:50,359 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2018-02-02 10:09:50,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:50,360 INFO L225 Difference]: With dead ends: 250 [2018-02-02 10:09:50,360 INFO L226 Difference]: Without dead ends: 250 [2018-02-02 10:09:50,360 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-02-02 10:09:50,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-02-02 10:09:50,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 186. [2018-02-02 10:09:50,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-02-02 10:09:50,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 233 transitions. [2018-02-02 10:09:50,363 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 233 transitions. Word has length 34 [2018-02-02 10:09:50,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:50,363 INFO L432 AbstractCegarLoop]: Abstraction has 186 states and 233 transitions. [2018-02-02 10:09:50,363 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 10:09:50,363 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 233 transitions. [2018-02-02 10:09:50,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-02-02 10:09:50,363 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:50,363 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, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:09:50,363 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:50,364 INFO L82 PathProgramCache]: Analyzing trace with hash -521175964, now seen corresponding path program 1 times [2018-02-02 10:09:50,364 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:50,370 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:09:50,447 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:09:50,447 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-02 10:09:50,447 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:50,447 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 10:09:50,447 INFO L182 omatonBuilderFactory]: Interpolants [4912#false, 4913#(= main_~x~0.base (select (store (select |#memory_$Pointer$.base| main_~x~0.base) (+ main_~x~0.offset 4) main_~x~0.base) main_~x~0.offset)), 4914#(= main_~first~0.base (select (select |#memory_$Pointer$.base| main_~first~0.base) main_~first~0.offset)), 4915#(= main_~first~0.base (select (select |#memory_$Pointer$.base| main_~x~1.base) main_~x~1.offset)), 4916#(= 1 (select |#valid| (select (select |#memory_$Pointer$.base| main_~x~1.base) main_~x~1.offset))), 4917#(= 1 (select |#valid| |main_#t~mem24.base|)), 4918#(= 1 (select |#valid| main_~y~1.base)), 4911#true] [2018-02-02 10:09:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:09:50,447 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-02 10:09:50,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-02 10:09:50,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-02 10:09:50,448 INFO L87 Difference]: Start difference. First operand 186 states and 233 transitions. Second operand 8 states. [2018-02-02 10:09:50,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:50,643 INFO L93 Difference]: Finished difference Result 268 states and 332 transitions. [2018-02-02 10:09:50,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-02 10:09:50,643 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2018-02-02 10:09:50,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:50,644 INFO L225 Difference]: With dead ends: 268 [2018-02-02 10:09:50,644 INFO L226 Difference]: Without dead ends: 268 [2018-02-02 10:09:50,644 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2018-02-02 10:09:50,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-02-02 10:09:50,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 199. [2018-02-02 10:09:50,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-02-02 10:09:50,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 250 transitions. [2018-02-02 10:09:50,649 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 250 transitions. Word has length 38 [2018-02-02 10:09:50,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:50,649 INFO L432 AbstractCegarLoop]: Abstraction has 199 states and 250 transitions. [2018-02-02 10:09:50,649 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-02 10:09:50,649 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 250 transitions. [2018-02-02 10:09:50,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-02-02 10:09:50,650 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:50,650 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, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:09:50,650 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:50,650 INFO L82 PathProgramCache]: Analyzing trace with hash -521175963, now seen corresponding path program 1 times [2018-02-02 10:09:50,651 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:50,659 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:50,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:09:50,748 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:09:50,748 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-02 10:09:50,748 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:50,748 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 10:09:50,749 INFO L182 omatonBuilderFactory]: Interpolants [5401#true, 5402#false, 5403#(and (= main_~x~0.base (select (store (select |#memory_$Pointer$.base| main_~x~0.base) (+ main_~x~0.offset 4) main_~x~0.base) main_~x~0.offset)) (= (select (store (select |#memory_$Pointer$.offset| main_~x~0.base) (+ main_~x~0.offset 4) main_~x~0.offset) main_~x~0.offset) main_~x~0.offset)), 5404#(and (= (select (select |#memory_$Pointer$.offset| main_~first~0.base) main_~first~0.offset) main_~first~0.offset) (= main_~first~0.base (select (select |#memory_$Pointer$.base| main_~first~0.base) main_~first~0.offset))), 5405#(and (= main_~x~1.base (select (select |#memory_$Pointer$.base| main_~x~1.base) main_~x~1.offset)) (= main_~x~1.offset (select (select |#memory_$Pointer$.offset| main_~x~1.base) main_~x~1.offset))), 5406#(and (= main_~x~1.base |main_#t~mem24.base|) (= main_~x~1.offset |main_#t~mem24.offset|)), 5407#(and (= main_~x~1.offset main_~y~1.offset) (= main_~y~1.base main_~x~1.base))] [2018-02-02 10:09:50,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:09:50,749 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 10:09:50,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 10:09:50,749 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-02 10:09:50,749 INFO L87 Difference]: Start difference. First operand 199 states and 250 transitions. Second operand 7 states. [2018-02-02 10:09:50,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:50,900 INFO L93 Difference]: Finished difference Result 257 states and 318 transitions. [2018-02-02 10:09:50,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-02-02 10:09:50,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-02-02 10:09:50,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:50,903 INFO L225 Difference]: With dead ends: 257 [2018-02-02 10:09:50,904 INFO L226 Difference]: Without dead ends: 257 [2018-02-02 10:09:50,904 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-02-02 10:09:50,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-02-02 10:09:50,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 198. [2018-02-02 10:09:50,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-02-02 10:09:50,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 247 transitions. [2018-02-02 10:09:50,906 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 247 transitions. Word has length 38 [2018-02-02 10:09:50,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:50,906 INFO L432 AbstractCegarLoop]: Abstraction has 198 states and 247 transitions. [2018-02-02 10:09:50,906 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 10:09:50,906 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 247 transitions. [2018-02-02 10:09:50,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-02-02 10:09:50,907 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:50,907 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:09:50,907 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:50,907 INFO L82 PathProgramCache]: Analyzing trace with hash -47566885, now seen corresponding path program 1 times [2018-02-02 10:09:50,907 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:50,913 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:50,935 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:09:50,936 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-02 10:09:50,936 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-02-02 10:09:50,936 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:50,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:09:50,936 INFO L182 omatonBuilderFactory]: Interpolants [5876#true, 5877#false, 5878#(= main_~c1~0 0), 5879#(<= main_~c1~0 1), 5880#(<= main_~c1~0 0)] [2018-02-02 10:09:50,937 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:09:50,937 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 10:09:50,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 10:09:50,937 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-02-02 10:09:50,937 INFO L87 Difference]: Start difference. First operand 198 states and 247 transitions. Second operand 5 states. [2018-02-02 10:09:50,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:50,956 INFO L93 Difference]: Finished difference Result 253 states and 312 transitions. [2018-02-02 10:09:50,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 10:09:50,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2018-02-02 10:09:50,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:50,957 INFO L225 Difference]: With dead ends: 253 [2018-02-02 10:09:50,957 INFO L226 Difference]: Without dead ends: 253 [2018-02-02 10:09:50,957 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-02-02 10:09:50,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-02-02 10:09:50,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 238. [2018-02-02 10:09:50,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-02-02 10:09:50,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 310 transitions. [2018-02-02 10:09:50,960 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 310 transitions. Word has length 41 [2018-02-02 10:09:50,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:50,961 INFO L432 AbstractCegarLoop]: Abstraction has 238 states and 310 transitions. [2018-02-02 10:09:50,961 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 10:09:50,961 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 310 transitions. [2018-02-02 10:09:50,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-02-02 10:09:50,961 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:50,961 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, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:09:50,961 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:50,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1474573890, now seen corresponding path program 1 times [2018-02-02 10:09:50,962 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:50,969 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:51,030 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 10:09:51,030 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-02 10:09:51,030 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-02-02 10:09:51,030 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:51,030 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 10:09:51,031 INFO L182 omatonBuilderFactory]: Interpolants [6372#true, 6373#false, 6374#(= |#valid| |old(#valid)|), 6375#(and (= |old(#valid)| (store |#valid| |main_#t~malloc3.base| 0)) (not (= 0 |main_#t~malloc3.base|))), 6376#(and (not (= 0 main_~x~0.base)) (= (store |#valid| main_~x~0.base 0) |old(#valid)|)), 6377#(and (not (= 0 main_~first~0.base)) (= (store |#valid| main_~first~0.base 0) |old(#valid)|)), 6378#(and (= |old(#valid)| (store |#valid| main_~x~1.base 0)) (not (= 0 main_~x~1.base)))] [2018-02-02 10:09:51,031 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 10:09:51,031 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 10:09:51,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 10:09:51,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-02 10:09:51,031 INFO L87 Difference]: Start difference. First operand 238 states and 310 transitions. Second operand 7 states. [2018-02-02 10:09:51,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:51,243 INFO L93 Difference]: Finished difference Result 243 states and 314 transitions. [2018-02-02 10:09:51,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 10:09:51,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2018-02-02 10:09:51,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:51,245 INFO L225 Difference]: With dead ends: 243 [2018-02-02 10:09:51,245 INFO L226 Difference]: Without dead ends: 230 [2018-02-02 10:09:51,245 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-02-02 10:09:51,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-02-02 10:09:51,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 229. [2018-02-02 10:09:51,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-02-02 10:09:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 300 transitions. [2018-02-02 10:09:51,249 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 300 transitions. Word has length 42 [2018-02-02 10:09:51,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:51,249 INFO L432 AbstractCegarLoop]: Abstraction has 229 states and 300 transitions. [2018-02-02 10:09:51,249 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 10:09:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 300 transitions. [2018-02-02 10:09:51,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-02-02 10:09:51,249 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:51,250 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:09:51,250 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:51,250 INFO L82 PathProgramCache]: Analyzing trace with hash 924240911, now seen corresponding path program 1 times [2018-02-02 10:09:51,251 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:51,261 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:09:51,321 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-02 10:09:51,321 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-02-02 10:09:51,322 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:51,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:09:51,322 INFO L182 omatonBuilderFactory]: Interpolants [6864#(= 1 (select |#valid| main_~last~0.base)), 6865#(or (= main_~last~0.base |main_#t~malloc3.base|) (= 1 (select |#valid| main_~last~0.base))), 6866#(or (= main_~last~0.base main_~x~0.base) (= 1 (select |#valid| main_~last~0.base))), 6867#(and (= 1 (select |#valid| main_~x~0.base)) (= 1 (select |#valid| main_~last~0.base))), 6861#true, 6862#false, 6863#(= 1 (select |#valid| main_~x~0.base))] [2018-02-02 10:09:51,322 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:09:51,322 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 10:09:51,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 10:09:51,323 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-02-02 10:09:51,323 INFO L87 Difference]: Start difference. First operand 229 states and 300 transitions. Second operand 7 states. [2018-02-02 10:09:51,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:51,443 INFO L93 Difference]: Finished difference Result 252 states and 325 transitions. [2018-02-02 10:09:51,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 10:09:51,443 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2018-02-02 10:09:51,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:51,444 INFO L225 Difference]: With dead ends: 252 [2018-02-02 10:09:51,444 INFO L226 Difference]: Without dead ends: 252 [2018-02-02 10:09:51,444 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-02-02 10:09:51,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-02-02 10:09:51,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 228. [2018-02-02 10:09:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-02-02 10:09:51,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 298 transitions. [2018-02-02 10:09:51,448 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 298 transitions. Word has length 45 [2018-02-02 10:09:51,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:51,448 INFO L432 AbstractCegarLoop]: Abstraction has 228 states and 298 transitions. [2018-02-02 10:09:51,448 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 10:09:51,448 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 298 transitions. [2018-02-02 10:09:51,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-02-02 10:09:51,449 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:51,449 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:09:51,449 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:51,449 INFO L82 PathProgramCache]: Analyzing trace with hash 924240912, now seen corresponding path program 1 times [2018-02-02 10:09:51,450 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:09:51,461 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:09:51,547 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:09:51,547 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-02 10:09:51,548 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-02-02 10:09:51,548 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:09:51,548 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 10:09:51,548 INFO L182 omatonBuilderFactory]: Interpolants [7348#true, 7349#false, 7350#(and (= 20 (select |#length| |main_#t~malloc3.base|)) (= 0 |main_#t~malloc3.offset|)), 7351#(and (= (select |#length| main_~x~0.base) 20) (= 0 main_~x~0.offset)), 7352#(and (= (select |#length| main_~x~0.base) 20) (= 1 (select |#valid| main_~x~0.base)) (= 0 main_~x~0.offset)), 7353#(and (<= 20 (select |#length| main_~last~0.base)) (= (select |#valid| main_~last~0.base) 1) (= main_~last~0.offset 0)), 7354#(and (<= 20 (select |#length| main_~last~0.base)) (= main_~last~0.offset 0))] [2018-02-02 10:09:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:09:51,548 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 10:09:51,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 10:09:51,549 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-02-02 10:09:51,549 INFO L87 Difference]: Start difference. First operand 228 states and 298 transitions. Second operand 7 states. [2018-02-02 10:09:51,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:09:51,803 INFO L93 Difference]: Finished difference Result 317 states and 402 transitions. [2018-02-02 10:09:51,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-02-02 10:09:51,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2018-02-02 10:09:51,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:09:51,806 INFO L225 Difference]: With dead ends: 317 [2018-02-02 10:09:51,806 INFO L226 Difference]: Without dead ends: 317 [2018-02-02 10:09:51,806 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2018-02-02 10:09:51,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-02-02 10:09:51,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 227. [2018-02-02 10:09:51,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-02-02 10:09:51,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 296 transitions. [2018-02-02 10:09:51,811 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 296 transitions. Word has length 45 [2018-02-02 10:09:51,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:09:51,811 INFO L432 AbstractCegarLoop]: Abstraction has 227 states and 296 transitions. [2018-02-02 10:09:51,811 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 10:09:51,812 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 296 transitions. [2018-02-02 10:09:51,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-02-02 10:09:51,812 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:09:51,812 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:09:51,812 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 10:09:51,812 INFO L82 PathProgramCache]: Analyzing trace with hash -2048623147, now seen corresponding path program 1 times [2018-02-02 10:09:51,813 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:09:51,821 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-02-02 10:09:51,821 INFO L293 seRefinementStrategy]: Strategy FixedTraceAbstractionRefinementStrategy was unsuccessful and could not determine trace feasibility. [2018-02-02 10:09:51,821 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-02 10:09:51,833 WARN L188 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-02-02 10:09:51,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 10:09:51 BoogieIcfgContainer [2018-02-02 10:09:51,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 10:09:51,835 INFO L168 Benchmark]: Toolchain (without parser) took 5126.58 ms. Allocated memory was 401.6 MB in the beginning and 729.8 MB in the end (delta: 328.2 MB). Free memory was 355.7 MB in the beginning and 581.8 MB in the end (delta: -226.1 MB). Peak memory consumption was 102.1 MB. Max. memory is 5.3 GB. [2018-02-02 10:09:51,836 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 401.6 MB. Free memory is still 362.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 10:09:51,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 172.74 ms. Allocated memory is still 401.6 MB. Free memory was 355.7 MB in the beginning and 345.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-02 10:09:51,836 INFO L168 Benchmark]: Boogie Preprocessor took 35.39 ms. Allocated memory is still 401.6 MB. Free memory was 345.1 MB in the beginning and 342.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-02 10:09:51,836 INFO L168 Benchmark]: RCFGBuilder took 385.73 ms. Allocated memory is still 401.6 MB. Free memory was 342.4 MB in the beginning and 310.6 MB in the end (delta: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 5.3 GB. [2018-02-02 10:09:51,836 INFO L168 Benchmark]: TraceAbstraction took 4529.86 ms. Allocated memory was 401.6 MB in the beginning and 729.8 MB in the end (delta: 328.2 MB). Free memory was 310.6 MB in the beginning and 581.8 MB in the end (delta: -271.2 MB). Peak memory consumption was 57.0 MB. Max. memory is 5.3 GB. [2018-02-02 10:09:51,837 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 401.6 MB. Free memory is still 362.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 172.74 ms. Allocated memory is still 401.6 MB. Free memory was 355.7 MB in the beginning and 345.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 35.39 ms. Allocated memory is still 401.6 MB. Free memory was 345.1 MB in the beginning and 342.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 385.73 ms. Allocated memory is still 401.6 MB. Free memory was 342.4 MB in the beginning and 310.6 MB in the end (delta: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 4529.86 ms. Allocated memory was 401.6 MB in the beginning and 729.8 MB in the end (delta: 328.2 MB). Free memory was 310.6 MB in the beginning and 581.8 MB in the end (delta: -271.2 MB). Peak memory consumption was 57.0 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L631] struct T2* first = ((void *)0); [L632] struct T2* last = ((void *)0); [L633] int c1 = 0; [L634] int c2 = 0; [L635] c1 < 5 && __VERIFIER_nondet_int() [L635] c1 < 5 && __VERIFIER_nondet_int() [L635] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L636] c1++ [L637] EXPR, FCALL malloc(sizeof(struct T2)) [L637] struct T2* x = malloc(sizeof(struct T2)); [L638] COND FALSE !(!x) [L640] FCALL x->next = ((void *)0) [L641] FCALL x->prev = ((void *)0) [L642] FCALL x->head.next = &x->head [L643] FCALL x->head.prev = &x->head [L644] FCALL x->head.data = c1 * 2 [L645] struct T* y = ((void *)0); [L646] c2 < 3 && __VERIFIER_nondet_int() [L646] c2 < 3 && __VERIFIER_nondet_int() [L646] COND TRUE c2 < 3 && __VERIFIER_nondet_int() [L647] c2++ [L648] EXPR, FCALL malloc(sizeof(struct T)) [L648] y = malloc(sizeof(struct T)) [L649] COND FALSE !(!y) [L651] EXPR, FCALL x->head.next [L651] FCALL y->next = x->head.next [L652] EXPR, FCALL y->next [L652] FCALL y->next->prev = y [L653] FCALL y->prev = &x->head [L654] FCALL y->data = c2*c1 [L655] FCALL x->head.next = y [L656] y = ((void *)0) [L646] c2 < 3 && __VERIFIER_nondet_int() [L646] c2 < 3 && __VERIFIER_nondet_int() [L646] COND TRUE c2 < 3 && __VERIFIER_nondet_int() [L647] c2++ [L648] EXPR, FCALL malloc(sizeof(struct T)) [L648] y = malloc(sizeof(struct T)) [L649] COND FALSE !(!y) [L651] EXPR, FCALL x->head.next [L651] FCALL y->next = x->head.next [L652] EXPR, FCALL y->next [L652] FCALL y->next->prev = y - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 101 locations, 41 error locations. UNKNOWN Result, 4.4s OverallTime, 23 OverallIterations, 2 TraceHistogramMax, 2.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1705 SDtfs, 2663 SDslu, 3261 SDs, 0 SdLazy, 2480 SolverSat, 157 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 44 SyntacticMatches, 14 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=238occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 41/79 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, 883 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 650 NumberOfCodeBlocks, 650 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 628 ConstructedInterpolants, 0 QuantifiedInterpolants, 118715 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 17 PerfectInterpolantSequences, 41/79 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0504_1_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_10-09-51-844.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0504_1_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_10-09-51-844.csv Received shutdown request...