java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/array-memsafety/strreplace-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 08:47:19,029 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 08:47:19,030 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 08:47:19,040 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 08:47:19,040 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 08:47:19,041 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 08:47:19,042 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 08:47:19,043 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 08:47:19,044 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 08:47:19,045 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 08:47:19,046 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 08:47:19,046 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 08:47:19,047 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 08:47:19,048 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 08:47:19,049 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 08:47:19,051 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 08:47:19,052 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 08:47:19,054 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 08:47:19,055 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 08:47:19,056 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 08:47:19,058 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 08:47:19,062 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 08:47:19,063 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 08:47:19,063 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-02-02 08:47:19,074 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 08:47:19,074 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 08:47:19,075 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 08:47:19,075 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 08:47:19,075 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 08:47:19,075 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 08:47:19,076 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 08:47:19,076 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 08:47:19,076 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 08:47:19,076 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 08:47:19,076 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 08:47:19,076 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 08:47:19,077 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 08:47:19,077 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 08:47:19,077 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 08:47:19,077 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 08:47:19,077 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 08:47:19,077 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 08:47:19,078 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 08:47:19,078 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 08:47:19,078 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 08:47:19,078 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 08:47:19,078 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 08:47:19,079 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 08:47:19,079 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-02 08:47:19,108 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 08:47:19,115 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 08:47:19,117 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 08:47:19,118 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 08:47:19,118 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 08:47:19,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/strreplace-alloca_true-valid-memsafety_true-termination.i [2018-02-02 08:47:19,251 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 08:47:19,252 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 08:47:19,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 08:47:19,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 08:47:19,259 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 08:47:19,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 08:47:19" (1/1) ... [2018-02-02 08:47:19,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ab297d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:47:19, skipping insertion in model container [2018-02-02 08:47:19,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 08:47:19" (1/1) ... [2018-02-02 08:47:19,279 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 08:47:19,306 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 08:47:19,398 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 08:47:19,412 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 08:47:19,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:47:19 WrapperNode [2018-02-02 08:47:19,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 08:47:19,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 08:47:19,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 08:47:19,419 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 08:47:19,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:47:19" (1/1) ... [2018-02-02 08:47:19,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:47:19" (1/1) ... [2018-02-02 08:47:19,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:47:19" (1/1) ... [2018-02-02 08:47:19,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:47:19" (1/1) ... [2018-02-02 08:47:19,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:47:19" (1/1) ... [2018-02-02 08:47:19,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:47:19" (1/1) ... [2018-02-02 08:47:19,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:47:19" (1/1) ... [2018-02-02 08:47:19,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 08:47:19,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 08:47:19,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 08:47:19,449 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 08:47:19,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:47:19" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 08:47:19,485 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 08:47:19,485 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 08:47:19,485 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrreplace [2018-02-02 08:47:19,485 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 08:47:19,485 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 08:47:19,486 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 08:47:19,486 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 08:47:19,486 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 08:47:19,486 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 08:47:19,486 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 08:47:19,486 INFO L128 BoogieDeclarations]: Found specification of procedure cstrreplace [2018-02-02 08:47:19,487 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 08:47:19,487 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 08:47:19,487 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 08:47:19,650 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 08:47:19,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 08:47:19 BoogieIcfgContainer [2018-02-02 08:47:19,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 08:47:19,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 08:47:19,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 08:47:19,653 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 08:47:19,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 08:47:19" (1/3) ... [2018-02-02 08:47:19,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8145b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 08:47:19, skipping insertion in model container [2018-02-02 08:47:19,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:47:19" (2/3) ... [2018-02-02 08:47:19,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8145b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 08:47:19, skipping insertion in model container [2018-02-02 08:47:19,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 08:47:19" (3/3) ... [2018-02-02 08:47:19,655 INFO L107 eAbstractionObserver]: Analyzing ICFG strreplace-alloca_true-valid-memsafety_true-termination.i [2018-02-02 08:47:19,661 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 08:47:19,665 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-02-02 08:47:19,690 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 08:47:19,690 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 08:47:19,690 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 08:47:19,690 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 08:47:19,691 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 08:47:19,691 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 08:47:19,691 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 08:47:19,691 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 08:47:19,691 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 08:47:19,701 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-02-02 08:47:19,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-02-02 08:47:19,711 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:47:19,712 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:47:19,712 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrreplaceErr4RequiresViolation, cstrreplaceErr5RequiresViolation, cstrreplaceErr3RequiresViolation, cstrreplaceErr0RequiresViolation, cstrreplaceErr1RequiresViolation, cstrreplaceErr2RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:47:19,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1004390414, now seen corresponding path program 1 times [2018-02-02 08:47:19,718 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:47:19,719 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:47:19,754 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:47:19,754 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:47:19,754 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:47:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:47:19,796 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:47:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:47:19,843 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:47:19,844 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 08:47:19,845 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 08:47:19,855 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 08:47:19,856 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 08:47:19,858 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2018-02-02 08:47:19,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:47:19,928 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-02-02 08:47:19,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 08:47:19,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-02-02 08:47:19,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:47:19,936 INFO L225 Difference]: With dead ends: 39 [2018-02-02 08:47:19,936 INFO L226 Difference]: Without dead ends: 36 [2018-02-02 08:47:19,937 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 08:47:20,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-02-02 08:47:20,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-02-02 08:47:20,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-02-02 08:47:20,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-02-02 08:47:20,012 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 10 [2018-02-02 08:47:20,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:47:20,012 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-02-02 08:47:20,012 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 08:47:20,013 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-02-02 08:47:20,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-02-02 08:47:20,013 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:47:20,013 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:47:20,013 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cstrreplaceErr4RequiresViolation, cstrreplaceErr5RequiresViolation, cstrreplaceErr3RequiresViolation, cstrreplaceErr0RequiresViolation, cstrreplaceErr1RequiresViolation, cstrreplaceErr2RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:47:20,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1004390413, now seen corresponding path program 1 times [2018-02-02 08:47:20,013 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:47:20,013 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:47:20,014 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:47:20,014 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:47:20,014 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:47:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:47:20,028 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:47:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:47:20,098 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:47:20,098 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 08:47:20,099 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 08:47:20,100 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 08:47:20,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 08:47:20,100 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 5 states. [2018-02-02 08:47:20,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:47:20,155 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-02-02 08:47:20,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 08:47:20,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-02-02 08:47:20,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:47:20,157 INFO L225 Difference]: With dead ends: 35 [2018-02-02 08:47:20,157 INFO L226 Difference]: Without dead ends: 35 [2018-02-02 08:47:20,158 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-02-02 08:47:20,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-02-02 08:47:20,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-02-02 08:47:20,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-02-02 08:47:20,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-02-02 08:47:20,161 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 10 [2018-02-02 08:47:20,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:47:20,162 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-02-02 08:47:20,162 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 08:47:20,162 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-02-02 08:47:20,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-02 08:47:20,162 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:47:20,163 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:47:20,163 INFO L371 AbstractCegarLoop]: === Iteration 3 === [cstrreplaceErr4RequiresViolation, cstrreplaceErr5RequiresViolation, cstrreplaceErr3RequiresViolation, cstrreplaceErr0RequiresViolation, cstrreplaceErr1RequiresViolation, cstrreplaceErr2RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:47:20,163 INFO L82 PathProgramCache]: Analyzing trace with hash -104566583, now seen corresponding path program 1 times [2018-02-02 08:47:20,163 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:47:20,163 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:47:20,164 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:47:20,164 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:47:20,164 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:47:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:47:20,180 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:47:20,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:47:20,219 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:47:20,219 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 08:47:20,219 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 08:47:20,219 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 08:47:20,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 08:47:20,220 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2018-02-02 08:47:20,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:47:20,258 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-02-02 08:47:20,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 08:47:20,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-02-02 08:47:20,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:47:20,259 INFO L225 Difference]: With dead ends: 32 [2018-02-02 08:47:20,259 INFO L226 Difference]: Without dead ends: 32 [2018-02-02 08:47:20,259 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-02 08:47:20,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-02-02 08:47:20,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-02-02 08:47:20,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-02-02 08:47:20,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2018-02-02 08:47:20,261 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 15 [2018-02-02 08:47:20,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:47:20,261 INFO L432 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2018-02-02 08:47:20,262 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 08:47:20,262 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2018-02-02 08:47:20,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-02 08:47:20,262 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:47:20,262 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:47:20,262 INFO L371 AbstractCegarLoop]: === Iteration 4 === [cstrreplaceErr4RequiresViolation, cstrreplaceErr5RequiresViolation, cstrreplaceErr3RequiresViolation, cstrreplaceErr0RequiresViolation, cstrreplaceErr1RequiresViolation, cstrreplaceErr2RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:47:20,262 INFO L82 PathProgramCache]: Analyzing trace with hash -104566582, now seen corresponding path program 1 times [2018-02-02 08:47:20,262 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:47:20,262 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:47:20,263 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:47:20,263 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:47:20,263 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:47:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:47:20,271 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:47:20,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:47:20,342 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:47:20,342 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-02 08:47:20,343 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-02 08:47:20,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-02 08:47:20,343 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-02-02 08:47:20,343 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 8 states. [2018-02-02 08:47:20,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:47:20,402 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-02-02 08:47:20,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 08:47:20,403 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-02-02 08:47:20,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:47:20,405 INFO L225 Difference]: With dead ends: 43 [2018-02-02 08:47:20,405 INFO L226 Difference]: Without dead ends: 43 [2018-02-02 08:47:20,405 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-02-02 08:47:20,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-02-02 08:47:20,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2018-02-02 08:47:20,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-02-02 08:47:20,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-02-02 08:47:20,409 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 15 [2018-02-02 08:47:20,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:47:20,409 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-02-02 08:47:20,409 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-02 08:47:20,410 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-02-02 08:47:20,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-02 08:47:20,410 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:47:20,410 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:47:20,410 INFO L371 AbstractCegarLoop]: === Iteration 5 === [cstrreplaceErr4RequiresViolation, cstrreplaceErr5RequiresViolation, cstrreplaceErr3RequiresViolation, cstrreplaceErr0RequiresViolation, cstrreplaceErr1RequiresViolation, cstrreplaceErr2RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:47:20,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1089103921, now seen corresponding path program 1 times [2018-02-02 08:47:20,411 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:47:20,411 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:47:20,411 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:47:20,412 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:47:20,412 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:47:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:47:20,429 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:47:20,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:47:20,527 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:47:20,527 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-02-02 08:47:20,527 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-02 08:47:20,527 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-02 08:47:20,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-02-02 08:47:20,528 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 9 states. [2018-02-02 08:47:20,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:47:20,613 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2018-02-02 08:47:20,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-02 08:47:20,613 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-02-02 08:47:20,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:47:20,614 INFO L225 Difference]: With dead ends: 55 [2018-02-02 08:47:20,614 INFO L226 Difference]: Without dead ends: 55 [2018-02-02 08:47:20,614 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-02-02 08:47:20,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-02-02 08:47:20,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2018-02-02 08:47:20,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-02-02 08:47:20,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2018-02-02 08:47:20,618 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 21 [2018-02-02 08:47:20,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:47:20,618 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2018-02-02 08:47:20,618 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-02 08:47:20,618 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2018-02-02 08:47:20,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-02 08:47:20,620 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:47:20,620 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:47:20,620 INFO L371 AbstractCegarLoop]: === Iteration 6 === [cstrreplaceErr4RequiresViolation, cstrreplaceErr5RequiresViolation, cstrreplaceErr3RequiresViolation, cstrreplaceErr0RequiresViolation, cstrreplaceErr1RequiresViolation, cstrreplaceErr2RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:47:20,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1925999697, now seen corresponding path program 1 times [2018-02-02 08:47:20,620 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:47:20,620 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:47:20,621 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:47:20,621 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:47:20,621 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:47:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:47:20,632 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:47:20,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:47:20,768 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:47:20,768 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 08:47:20,774 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:47:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:47:20,796 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:47:20,830 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-02-02 08:47:20,832 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-02-02 08:47:20,832 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:47:20,833 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:47:20,838 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-02-02 08:47:20,838 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2018-02-02 08:47:20,945 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2018-02-02 08:47:20,951 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2018-02-02 08:47:20,951 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-02-02 08:47:20,955 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-02-02 08:47:20,970 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-02-02 08:47:20,970 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:33 [2018-02-02 08:47:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:47:21,037 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:47:21,037 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2018-02-02 08:47:21,038 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-02-02 08:47:21,038 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-02-02 08:47:21,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2018-02-02 08:47:21,038 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 16 states. [2018-02-02 08:47:24,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:47:24,157 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2018-02-02 08:47:24,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-02-02 08:47:24,158 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2018-02-02 08:47:24,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:47:24,158 INFO L225 Difference]: With dead ends: 113 [2018-02-02 08:47:24,159 INFO L226 Difference]: Without dead ends: 113 [2018-02-02 08:47:24,159 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2018-02-02 08:47:24,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-02-02 08:47:24,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 58. [2018-02-02 08:47:24,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-02-02 08:47:24,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2018-02-02 08:47:24,163 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 21 [2018-02-02 08:47:24,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:47:24,163 INFO L432 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2018-02-02 08:47:24,163 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-02-02 08:47:24,163 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2018-02-02 08:47:24,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-02 08:47:24,164 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:47:24,164 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] [2018-02-02 08:47:24,164 INFO L371 AbstractCegarLoop]: === Iteration 7 === [cstrreplaceErr4RequiresViolation, cstrreplaceErr5RequiresViolation, cstrreplaceErr3RequiresViolation, cstrreplaceErr0RequiresViolation, cstrreplaceErr1RequiresViolation, cstrreplaceErr2RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:47:24,165 INFO L82 PathProgramCache]: Analyzing trace with hash 292485851, now seen corresponding path program 1 times [2018-02-02 08:47:24,165 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:47:24,165 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:47:24,165 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:47:24,165 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:47:24,166 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:47:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:47:24,176 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:47:24,213 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 08:47:24,213 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 08:47:24,214 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 08:47:24,214 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 08:47:24,214 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 08:47:24,214 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 08:47:24,215 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand 4 states. [2018-02-02 08:47:24,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:47:24,255 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2018-02-02 08:47:24,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 08:47:24,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-02-02 08:47:24,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:47:24,256 INFO L225 Difference]: With dead ends: 57 [2018-02-02 08:47:24,256 INFO L226 Difference]: Without dead ends: 38 [2018-02-02 08:47:24,257 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 08:47:24,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-02-02 08:47:24,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-02-02 08:47:24,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-02-02 08:47:24,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-02-02 08:47:24,259 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 23 [2018-02-02 08:47:24,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:47:24,259 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-02-02 08:47:24,259 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 08:47:24,260 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-02-02 08:47:24,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-02-02 08:47:24,260 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:47:24,260 INFO L351 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:47:24,260 INFO L371 AbstractCegarLoop]: === Iteration 8 === [cstrreplaceErr4RequiresViolation, cstrreplaceErr5RequiresViolation, cstrreplaceErr3RequiresViolation, cstrreplaceErr0RequiresViolation, cstrreplaceErr1RequiresViolation, cstrreplaceErr2RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:47:24,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1201761770, now seen corresponding path program 2 times [2018-02-02 08:47:24,261 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:47:24,261 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:47:24,262 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:47:24,262 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:47:24,262 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:47:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:47:24,279 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:47:24,487 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:47:24,488 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:47:24,488 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 08:47:24,492 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 08:47:24,499 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:47:24,502 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 08:47:24,504 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 08:47:24,506 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:47:24,509 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-02-02 08:47:24,510 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:47:24,512 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:47:24,512 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-02-02 08:47:24,530 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-02-02 08:47:24,532 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-02-02 08:47:24,532 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:47:24,533 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:47:24,540 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:47:24,540 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2018-02-02 08:47:24,622 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-02-02 08:47:24,626 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 13 [2018-02-02 08:47:24,626 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-02-02 08:47:24,629 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-02-02 08:47:24,634 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-02-02 08:47:24,635 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:38, output treesize:49 [2018-02-02 08:47:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:47:24,680 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:47:24,680 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-02-02 08:47:24,680 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-02-02 08:47:24,681 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-02-02 08:47:24,681 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2018-02-02 08:47:24,681 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 18 states. [2018-02-02 08:47:25,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:47:25,218 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2018-02-02 08:47:25,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-02-02 08:47:25,219 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 27 [2018-02-02 08:47:25,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:47:25,219 INFO L225 Difference]: With dead ends: 75 [2018-02-02 08:47:25,219 INFO L226 Difference]: Without dead ends: 58 [2018-02-02 08:47:25,220 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=881, Unknown=0, NotChecked=0, Total=1056 [2018-02-02 08:47:25,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-02-02 08:47:25,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2018-02-02 08:47:25,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-02-02 08:47:25,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2018-02-02 08:47:25,222 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 27 [2018-02-02 08:47:25,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:47:25,222 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2018-02-02 08:47:25,222 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-02-02 08:47:25,222 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2018-02-02 08:47:25,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-02-02 08:47:25,223 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 08:47:25,223 INFO L351 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 08:47:25,223 INFO L371 AbstractCegarLoop]: === Iteration 9 === [cstrreplaceErr4RequiresViolation, cstrreplaceErr5RequiresViolation, cstrreplaceErr3RequiresViolation, cstrreplaceErr0RequiresViolation, cstrreplaceErr1RequiresViolation, cstrreplaceErr2RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 08:47:25,223 INFO L82 PathProgramCache]: Analyzing trace with hash 2006324798, now seen corresponding path program 1 times [2018-02-02 08:47:25,223 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 08:47:25,223 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 08:47:25,224 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:47:25,224 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 08:47:25,224 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 08:47:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:47:25,238 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 08:47:25,380 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:47:25,380 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 08:47:25,380 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 08:47:25,385 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 08:47:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 08:47:25,409 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 08:47:25,411 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-02-02 08:47:25,411 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:47:25,413 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:47:25,414 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-02-02 08:47:25,421 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-02-02 08:47:25,422 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-02-02 08:47:25,422 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 08:47:25,423 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:47:25,424 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-02-02 08:47:25,424 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2018-02-02 08:47:25,461 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2018-02-02 08:47:25,468 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 27 [2018-02-02 08:47:25,469 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-02-02 08:47:25,474 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-02-02 08:47:25,481 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-02-02 08:47:25,481 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:27 [2018-02-02 08:47:25,531 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-02-02 08:47:25,532 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 08:47:25,536 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-02-02 08:47:25,541 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 12 [2018-02-02 08:47:25,541 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-02-02 08:47:25,543 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-02-02 08:47:25,547 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-02-02 08:47:25,547 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:57, output treesize:34 [2018-02-02 08:47:25,595 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 08:47:25,614 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 08:47:25,614 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 20 [2018-02-02 08:47:25,614 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-02-02 08:47:25,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-02-02 08:47:25,615 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2018-02-02 08:47:25,615 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 21 states. [2018-02-02 08:47:26,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 08:47:26,063 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2018-02-02 08:47:26,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-02-02 08:47:26,063 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 35 [2018-02-02 08:47:26,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 08:47:26,064 INFO L225 Difference]: With dead ends: 45 [2018-02-02 08:47:26,064 INFO L226 Difference]: Without dead ends: 0 [2018-02-02 08:47:26,064 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=912, Unknown=0, NotChecked=0, Total=1190 [2018-02-02 08:47:26,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-02 08:47:26,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-02 08:47:26,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-02 08:47:26,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-02 08:47:26,065 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2018-02-02 08:47:26,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 08:47:26,065 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-02 08:47:26,065 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-02-02 08:47:26,065 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-02 08:47:26,066 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-02 08:47:26,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 08:47:26 BoogieIcfgContainer [2018-02-02 08:47:26,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 08:47:26,070 INFO L168 Benchmark]: Toolchain (without parser) took 6818.76 ms. Allocated memory was 396.9 MB in the beginning and 670.6 MB in the end (delta: 273.7 MB). Free memory was 355.1 MB in the beginning and 483.5 MB in the end (delta: -128.4 MB). Peak memory consumption was 145.3 MB. Max. memory is 5.3 GB. [2018-02-02 08:47:26,071 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 396.9 MB. Free memory is still 360.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 08:47:26,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 165.41 ms. Allocated memory is still 396.9 MB. Free memory was 353.8 MB in the beginning and 344.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 5.3 GB. [2018-02-02 08:47:26,072 INFO L168 Benchmark]: Boogie Preprocessor took 29.59 ms. Allocated memory is still 396.9 MB. Free memory was 344.5 MB in the beginning and 341.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-02 08:47:26,072 INFO L168 Benchmark]: RCFGBuilder took 202.29 ms. Allocated memory is still 396.9 MB. Free memory was 341.9 MB in the beginning and 325.2 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 5.3 GB. [2018-02-02 08:47:26,072 INFO L168 Benchmark]: TraceAbstraction took 6418.27 ms. Allocated memory was 396.9 MB in the beginning and 670.6 MB in the end (delta: 273.7 MB). Free memory was 325.2 MB in the beginning and 483.5 MB in the end (delta: -158.3 MB). Peak memory consumption was 115.3 MB. Max. memory is 5.3 GB. [2018-02-02 08:47:26,074 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 396.9 MB. Free memory is still 360.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 165.41 ms. Allocated memory is still 396.9 MB. Free memory was 353.8 MB in the beginning and 344.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 29.59 ms. Allocated memory is still 396.9 MB. Free memory was 344.5 MB in the beginning and 341.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 202.29 ms. Allocated memory is still 396.9 MB. Free memory was 341.9 MB in the beginning and 325.2 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 6418.27 ms. Allocated memory was 396.9 MB in the beginning and 670.6 MB in the end (delta: 273.7 MB). Free memory was 325.2 MB in the beginning and 483.5 MB in the end (delta: -158.3 MB). Peak memory consumption was 115.3 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 553]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 9 error locations. SAFE Result, 6.3s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 4.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 245 SDtfs, 466 SDslu, 977 SDs, 0 SdLazy, 887 SolverSat, 155 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 199 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 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, 9 MinimizatonAttempts, 77 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 260 NumberOfCodeBlocks, 260 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 248 ConstructedInterpolants, 14 QuantifiedInterpolants, 67446 SizeOfPredicates, 25 NumberOfNonLiveVariables, 356 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 12/74 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/strreplace-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_08-47-26-079.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/strreplace-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_08-47-26-079.csv Received shutdown request...