java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength_true-valid-memsafety.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-04 00:21:08,237 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 00:21:08,238 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 00:21:08,249 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 00:21:08,249 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 00:21:08,249 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 00:21:08,250 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 00:21:08,251 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 00:21:08,252 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 00:21:08,253 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 00:21:08,253 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 00:21:08,253 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 00:21:08,254 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 00:21:08,255 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 00:21:08,255 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 00:21:08,257 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 00:21:08,259 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 00:21:08,260 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 00:21:08,261 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 00:21:08,262 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 00:21:08,263 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 00:21:08,267 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 00:21:08,268 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 00:21:08,268 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-02-04 00:21:08,277 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 00:21:08,277 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 00:21:08,278 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 00:21:08,278 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 00:21:08,278 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 00:21:08,279 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 00:21:08,279 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 00:21:08,279 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 00:21:08,279 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 00:21:08,279 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 00:21:08,279 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 00:21:08,279 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 00:21:08,280 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 00:21:08,280 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 00:21:08,280 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 00:21:08,280 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 00:21:08,280 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 00:21:08,280 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 00:21:08,281 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 00:21:08,281 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 00:21:08,281 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 00:21:08,281 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 00:21:08,281 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-04 00:21:08,281 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-04 00:21:08,281 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-04 00:21:08,309 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 00:21:08,318 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 00:21:08,321 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 00:21:08,322 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 00:21:08,323 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 00:21:08,323 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength_true-valid-memsafety.c [2018-02-04 00:21:08,421 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 00:21:08,422 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 00:21:08,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 00:21:08,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 00:21:08,426 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 00:21:08,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 12:21:08" (1/1) ... [2018-02-04 00:21:08,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21b398a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:08, skipping insertion in model container [2018-02-04 00:21:08,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 12:21:08" (1/1) ... [2018-02-04 00:21:08,438 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 00:21:08,448 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 00:21:08,529 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 00:21:08,541 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 00:21:08,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:08 WrapperNode [2018-02-04 00:21:08,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 00:21:08,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 00:21:08,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 00:21:08,546 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 00:21:08,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:08" (1/1) ... [2018-02-04 00:21:08,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:08" (1/1) ... [2018-02-04 00:21:08,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:08" (1/1) ... [2018-02-04 00:21:08,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:08" (1/1) ... [2018-02-04 00:21:08,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:08" (1/1) ... [2018-02-04 00:21:08,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:08" (1/1) ... [2018-02-04 00:21:08,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:08" (1/1) ... [2018-02-04 00:21:08,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 00:21:08,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 00:21:08,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 00:21:08,569 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 00:21:08,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:08" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 00:21:08,604 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 00:21:08,604 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 00:21:08,604 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-02-04 00:21:08,604 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 00:21:08,605 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-04 00:21:08,605 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-04 00:21:08,605 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 00:21:08,605 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 00:21:08,605 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 00:21:08,605 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-02-04 00:21:08,605 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 00:21:08,605 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 00:21:08,605 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 00:21:08,728 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 00:21:08,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 12:21:08 BoogieIcfgContainer [2018-02-04 00:21:08,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 00:21:08,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 00:21:08,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 00:21:08,731 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 00:21:08,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 12:21:08" (1/3) ... [2018-02-04 00:21:08,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46beb81f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 12:21:08, skipping insertion in model container [2018-02-04 00:21:08,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:21:08" (2/3) ... [2018-02-04 00:21:08,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46beb81f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 12:21:08, skipping insertion in model container [2018-02-04 00:21:08,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 12:21:08" (3/3) ... [2018-02-04 00:21:08,734 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_true-valid-memsafety.c [2018-02-04 00:21:08,740 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-04 00:21:08,747 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2018-02-04 00:21:08,776 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 00:21:08,777 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 00:21:08,777 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-04 00:21:08,777 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-04 00:21:08,777 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 00:21:08,777 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 00:21:08,777 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 00:21:08,777 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 00:21:08,778 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 00:21:08,787 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-02-04 00:21:08,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 00:21:08,793 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:08,794 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 00:21:08,794 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-04 00:21:08,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1202729229, now seen corresponding path program 1 times [2018-02-04 00:21:08,799 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:08,799 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:08,836 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:08,836 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:08,836 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:08,872 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:08,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 00:21:08,899 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 00:21:08,899 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 00:21:08,901 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-02-04 00:21:08,908 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-02-04 00:21:08,909 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-02-04 00:21:08,910 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2018-02-04 00:21:08,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:08,921 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2018-02-04 00:21:08,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-02-04 00:21:08,922 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-02-04 00:21:08,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:08,928 INFO L225 Difference]: With dead ends: 49 [2018-02-04 00:21:08,928 INFO L226 Difference]: Without dead ends: 46 [2018-02-04 00:21:08,929 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 [2018-02-04 00:21:08,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-02-04 00:21:08,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-02-04 00:21:08,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-02-04 00:21:08,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2018-02-04 00:21:08,952 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 13 [2018-02-04 00:21:08,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:08,952 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2018-02-04 00:21:08,952 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-02-04 00:21:08,952 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2018-02-04 00:21:08,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-04 00:21:08,952 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:08,953 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 00:21:08,953 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-04 00:21:08,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1812590093, now seen corresponding path program 1 times [2018-02-04 00:21:08,953 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:08,953 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:08,954 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:08,954 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:08,955 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:08,967 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:08,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 00:21:08,991 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 00:21:08,991 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-04 00:21:08,992 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 00:21:08,992 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 00:21:08,992 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 00:21:08,992 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 3 states. [2018-02-04 00:21:09,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:09,079 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-02-04 00:21:09,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 00:21:09,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-02-04 00:21:09,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:09,087 INFO L225 Difference]: With dead ends: 67 [2018-02-04 00:21:09,088 INFO L226 Difference]: Without dead ends: 67 [2018-02-04 00:21:09,088 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 [2018-02-04 00:21:09,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-02-04 00:21:09,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50. [2018-02-04 00:21:09,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-02-04 00:21:09,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2018-02-04 00:21:09,096 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 14 [2018-02-04 00:21:09,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:09,097 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-02-04 00:21:09,097 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 00:21:09,097 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2018-02-04 00:21:09,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-04 00:21:09,097 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:09,097 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 00:21:09,097 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-04 00:21:09,098 INFO L82 PathProgramCache]: Analyzing trace with hash -267768884, now seen corresponding path program 1 times [2018-02-04 00:21:09,098 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:09,098 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:09,099 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:09,099 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:09,099 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:09,111 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 00:21:09,176 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 00:21:09,176 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 00:21:09,176 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 00:21:09,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 00:21:09,177 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 00:21:09,177 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 5 states. [2018-02-04 00:21:09,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:09,281 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2018-02-04 00:21:09,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 00:21:09,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-02-04 00:21:09,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:09,282 INFO L225 Difference]: With dead ends: 73 [2018-02-04 00:21:09,282 INFO L226 Difference]: Without dead ends: 73 [2018-02-04 00:21:09,282 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-04 00:21:09,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-02-04 00:21:09,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 57. [2018-02-04 00:21:09,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-02-04 00:21:09,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2018-02-04 00:21:09,286 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 15 [2018-02-04 00:21:09,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:09,287 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2018-02-04 00:21:09,287 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 00:21:09,287 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2018-02-04 00:21:09,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-02-04 00:21:09,287 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:09,287 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 00:21:09,288 INFO L371 AbstractCegarLoop]: === Iteration 4 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-04 00:21:09,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1098181562, now seen corresponding path program 1 times [2018-02-04 00:21:09,288 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:09,288 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:09,289 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:09,289 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:09,289 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:09,299 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:09,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 00:21:09,321 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 00:21:09,321 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 00:21:09,321 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 00:21:09,321 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 00:21:09,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 00:21:09,322 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 3 states. [2018-02-04 00:21:09,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:09,337 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2018-02-04 00:21:09,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 00:21:09,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-02-04 00:21:09,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:09,340 INFO L225 Difference]: With dead ends: 55 [2018-02-04 00:21:09,340 INFO L226 Difference]: Without dead ends: 55 [2018-02-04 00:21:09,340 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 [2018-02-04 00:21:09,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-02-04 00:21:09,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-02-04 00:21:09,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-02-04 00:21:09,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2018-02-04 00:21:09,343 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 19 [2018-02-04 00:21:09,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:09,343 INFO L432 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2018-02-04 00:21:09,343 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 00:21:09,343 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2018-02-04 00:21:09,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-02-04 00:21:09,343 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:09,344 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 00:21:09,344 INFO L371 AbstractCegarLoop]: === Iteration 5 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-04 00:21:09,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1098181563, now seen corresponding path program 1 times [2018-02-04 00:21:09,344 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:09,344 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:09,344 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:09,344 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:09,345 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:09,353 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 00:21:09,404 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 00:21:09,404 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-04 00:21:09,404 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-04 00:21:09,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-04 00:21:09,404 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-02-04 00:21:09,404 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 4 states. [2018-02-04 00:21:09,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:09,456 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2018-02-04 00:21:09,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-04 00:21:09,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-02-04 00:21:09,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:09,457 INFO L225 Difference]: With dead ends: 65 [2018-02-04 00:21:09,457 INFO L226 Difference]: Without dead ends: 65 [2018-02-04 00:21:09,457 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-02-04 00:21:09,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-02-04 00:21:09,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2018-02-04 00:21:09,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-02-04 00:21:09,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2018-02-04 00:21:09,461 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 19 [2018-02-04 00:21:09,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:09,461 INFO L432 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2018-02-04 00:21:09,461 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-04 00:21:09,461 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2018-02-04 00:21:09,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-02-04 00:21:09,462 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:09,462 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] [2018-02-04 00:21:09,462 INFO L371 AbstractCegarLoop]: === Iteration 6 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-04 00:21:09,462 INFO L82 PathProgramCache]: Analyzing trace with hash -2060273317, now seen corresponding path program 1 times [2018-02-04 00:21:09,462 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:09,462 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:09,466 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:09,466 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:09,466 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:09,478 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-02-04 00:21:09,511 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 00:21:09,511 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 00:21:09,511 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 00:21:09,511 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 00:21:09,511 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 00:21:09,511 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 5 states. [2018-02-04 00:21:09,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:09,551 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2018-02-04 00:21:09,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 00:21:09,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-02-04 00:21:09,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:09,552 INFO L225 Difference]: With dead ends: 69 [2018-02-04 00:21:09,552 INFO L226 Difference]: Without dead ends: 69 [2018-02-04 00:21:09,553 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-02-04 00:21:09,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-02-04 00:21:09,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2018-02-04 00:21:09,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-02-04 00:21:09,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2018-02-04 00:21:09,557 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 28 [2018-02-04 00:21:09,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:09,557 INFO L432 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2018-02-04 00:21:09,558 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 00:21:09,558 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2018-02-04 00:21:09,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-02-04 00:21:09,558 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:09,559 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] [2018-02-04 00:21:09,559 INFO L371 AbstractCegarLoop]: === Iteration 7 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-04 00:21:09,559 INFO L82 PathProgramCache]: Analyzing trace with hash 556036660, now seen corresponding path program 1 times [2018-02-04 00:21:09,559 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:09,559 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:09,560 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:09,560 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:09,560 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:09,573 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 00:21:09,678 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 00:21:09,678 INFO L213 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 [2018-02-04 00:21:09,684 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:09,715 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 00:21:09,748 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 [2018-02-04 00:21:09,749 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 00:21:09,752 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-04 00:21:09,753 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-02-04 00:21:09,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-02-04 00:21:09,820 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-04 00:21:09,820 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2018-02-04 00:21:09,821 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-02-04 00:21:09,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-02-04 00:21:09,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-02-04 00:21:09,821 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2018-02-04 00:21:09,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:09,959 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2018-02-04 00:21:09,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-04 00:21:09,960 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-02-04 00:21:09,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:09,960 INFO L225 Difference]: With dead ends: 74 [2018-02-04 00:21:09,961 INFO L226 Difference]: Without dead ends: 74 [2018-02-04 00:21:09,961 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-02-04 00:21:09,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-02-04 00:21:09,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 60. [2018-02-04 00:21:09,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-02-04 00:21:09,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2018-02-04 00:21:09,965 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 29 [2018-02-04 00:21:09,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:09,965 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2018-02-04 00:21:09,965 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-02-04 00:21:09,965 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2018-02-04 00:21:09,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-02-04 00:21:09,966 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:09,966 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] [2018-02-04 00:21:09,966 INFO L371 AbstractCegarLoop]: === Iteration 8 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-04 00:21:09,966 INFO L82 PathProgramCache]: Analyzing trace with hash 556036659, now seen corresponding path program 1 times [2018-02-04 00:21:09,967 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:09,967 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:09,967 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:09,968 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:09,968 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:09,976 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:10,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 00:21:10,004 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 00:21:10,004 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 00:21:10,004 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 00:21:10,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 00:21:10,005 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 00:21:10,005 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 5 states. [2018-02-04 00:21:10,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:10,031 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2018-02-04 00:21:10,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 00:21:10,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-02-04 00:21:10,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:10,031 INFO L225 Difference]: With dead ends: 59 [2018-02-04 00:21:10,032 INFO L226 Difference]: Without dead ends: 59 [2018-02-04 00:21:10,032 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-04 00:21:10,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-02-04 00:21:10,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-02-04 00:21:10,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-02-04 00:21:10,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2018-02-04 00:21:10,035 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 29 [2018-02-04 00:21:10,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:10,035 INFO L432 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2018-02-04 00:21:10,036 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 00:21:10,036 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2018-02-04 00:21:10,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-02-04 00:21:10,036 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:10,037 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 00:21:10,037 INFO L371 AbstractCegarLoop]: === Iteration 9 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-04 00:21:10,037 INFO L82 PathProgramCache]: Analyzing trace with hash -848422454, now seen corresponding path program 1 times [2018-02-04 00:21:10,037 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:10,037 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:10,038 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:10,038 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:10,038 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:10,047 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-02-04 00:21:10,129 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 00:21:10,129 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 00:21:10,129 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 00:21:10,129 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 00:21:10,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-02-04 00:21:10,129 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 6 states. [2018-02-04 00:21:10,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:10,181 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2018-02-04 00:21:10,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 00:21:10,182 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2018-02-04 00:21:10,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:10,182 INFO L225 Difference]: With dead ends: 64 [2018-02-04 00:21:10,182 INFO L226 Difference]: Without dead ends: 64 [2018-02-04 00:21:10,183 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-02-04 00:21:10,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-02-04 00:21:10,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2018-02-04 00:21:10,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-02-04 00:21:10,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2018-02-04 00:21:10,186 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 32 [2018-02-04 00:21:10,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:10,187 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2018-02-04 00:21:10,187 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 00:21:10,187 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2018-02-04 00:21:10,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-02-04 00:21:10,187 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:10,188 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 00:21:10,188 INFO L371 AbstractCegarLoop]: === Iteration 10 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-04 00:21:10,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1529051221, now seen corresponding path program 1 times [2018-02-04 00:21:10,188 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:10,188 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:10,189 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:10,189 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:10,189 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:10,196 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:10,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 00:21:10,222 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 00:21:10,222 INFO L213 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 [2018-02-04 00:21:10,230 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:10,246 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 00:21:10,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 00:21:10,285 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 00:21:10,285 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-02-04 00:21:10,285 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 00:21:10,286 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 00:21:10,286 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-02-04 00:21:10,286 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 5 states. [2018-02-04 00:21:10,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:10,318 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2018-02-04 00:21:10,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-04 00:21:10,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-02-04 00:21:10,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:10,320 INFO L225 Difference]: With dead ends: 83 [2018-02-04 00:21:10,320 INFO L226 Difference]: Without dead ends: 83 [2018-02-04 00:21:10,320 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-02-04 00:21:10,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-02-04 00:21:10,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 65. [2018-02-04 00:21:10,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-02-04 00:21:10,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-02-04 00:21:10,324 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 32 [2018-02-04 00:21:10,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:10,324 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-02-04 00:21:10,324 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 00:21:10,324 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-02-04 00:21:10,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-02-04 00:21:10,325 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:10,325 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, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 00:21:10,325 INFO L371 AbstractCegarLoop]: === Iteration 11 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-04 00:21:10,325 INFO L82 PathProgramCache]: Analyzing trace with hash -736270445, now seen corresponding path program 1 times [2018-02-04 00:21:10,325 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:10,325 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:10,326 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:10,326 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:10,326 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:10,334 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 00:21:10,395 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 00:21:10,395 INFO L213 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 [2018-02-04 00:21:10,410 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:10,428 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 00:21:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 00:21:10,496 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 00:21:10,496 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2018-02-04 00:21:10,496 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-02-04 00:21:10,497 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-02-04 00:21:10,497 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-02-04 00:21:10,497 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 11 states. [2018-02-04 00:21:10,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:10,585 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2018-02-04 00:21:10,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-04 00:21:10,585 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2018-02-04 00:21:10,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:10,586 INFO L225 Difference]: With dead ends: 98 [2018-02-04 00:21:10,586 INFO L226 Difference]: Without dead ends: 98 [2018-02-04 00:21:10,587 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2018-02-04 00:21:10,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-02-04 00:21:10,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 78. [2018-02-04 00:21:10,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-02-04 00:21:10,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2018-02-04 00:21:10,591 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 34 [2018-02-04 00:21:10,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:10,591 INFO L432 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2018-02-04 00:21:10,591 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-02-04 00:21:10,591 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2018-02-04 00:21:10,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-02-04 00:21:10,592 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:10,592 INFO L351 BasicCegarLoop]: trace histogram [3, 2, 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] [2018-02-04 00:21:10,593 INFO L371 AbstractCegarLoop]: === Iteration 12 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-04 00:21:10,593 INFO L82 PathProgramCache]: Analyzing trace with hash 733800956, now seen corresponding path program 2 times [2018-02-04 00:21:10,593 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:10,593 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:10,595 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:10,595 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 00:21:10,595 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:10,603 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-02-04 00:21:10,631 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 00:21:10,632 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 00:21:10,638 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-04 00:21:10,650 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-02-04 00:21:10,650 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 00:21:10,653 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 00:21:10,672 INFO L700 Elim1Store]: detected not equals via solver [2018-02-04 00:21:10,674 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-02-04 00:21:10,674 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 00:21:10,676 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-02-04 00:21:10,676 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-02-04 00:21:10,709 INFO L700 Elim1Store]: detected not equals via solver [2018-02-04 00:21:10,710 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-02-04 00:21:10,710 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 00:21:10,712 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-02-04 00:21:10,712 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-02-04 00:21:10,736 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_~#b~0.base| Int)) (and (= (select |c_old(#valid)| |main_~#b~0.base|) 0) (= (store |c_old(#valid)| |main_~#b~0.base| 0) |c_#valid|))) is different from true [2018-02-04 00:21:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-02-04 00:21:10,774 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-04 00:21:10,774 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2018-02-04 00:21:10,775 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 00:21:10,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 00:21:10,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=40, Unknown=1, NotChecked=12, Total=72 [2018-02-04 00:21:10,775 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand 9 states. [2018-02-04 00:21:10,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:10,930 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2018-02-04 00:21:10,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-04 00:21:10,930 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2018-02-04 00:21:10,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:10,931 INFO L225 Difference]: With dead ends: 109 [2018-02-04 00:21:10,931 INFO L226 Difference]: Without dead ends: 68 [2018-02-04 00:21:10,931 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=175, Unknown=1, NotChecked=28, Total=272 [2018-02-04 00:21:10,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-02-04 00:21:10,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2018-02-04 00:21:10,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-02-04 00:21:10,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2018-02-04 00:21:10,934 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 45 [2018-02-04 00:21:10,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:10,934 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2018-02-04 00:21:10,934 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 00:21:10,934 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2018-02-04 00:21:10,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-02-04 00:21:10,935 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:10,935 INFO L351 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 00:21:10,935 INFO L371 AbstractCegarLoop]: === Iteration 13 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-04 00:21:10,935 INFO L82 PathProgramCache]: Analyzing trace with hash 611219876, now seen corresponding path program 2 times [2018-02-04 00:21:10,935 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:10,935 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:10,936 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:10,936 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 00:21:10,936 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:10,946 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:11,010 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-02-04 00:21:11,010 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 00:21:11,010 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 00:21:11,017 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-04 00:21:11,037 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-04 00:21:11,037 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 00:21:11,040 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 00:21:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-02-04 00:21:11,099 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-04 00:21:11,099 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 14 [2018-02-04 00:21:11,099 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-02-04 00:21:11,100 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-02-04 00:21:11,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2018-02-04 00:21:11,100 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 14 states. [2018-02-04 00:21:11,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:11,243 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2018-02-04 00:21:11,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-04 00:21:11,244 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2018-02-04 00:21:11,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:11,245 INFO L225 Difference]: With dead ends: 70 [2018-02-04 00:21:11,245 INFO L226 Difference]: Without dead ends: 64 [2018-02-04 00:21:11,245 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2018-02-04 00:21:11,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-02-04 00:21:11,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2018-02-04 00:21:11,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-02-04 00:21:11,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-02-04 00:21:11,249 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 47 [2018-02-04 00:21:11,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:11,249 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-02-04 00:21:11,250 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-02-04 00:21:11,250 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-02-04 00:21:11,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-02-04 00:21:11,251 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 00:21:11,251 INFO L351 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 00:21:11,251 INFO L371 AbstractCegarLoop]: === Iteration 14 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-04 00:21:11,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1268780948, now seen corresponding path program 3 times [2018-02-04 00:21:11,252 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 00:21:11,252 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 00:21:11,252 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:11,252 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-04 00:21:11,252 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 00:21:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 00:21:11,263 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 00:21:11,309 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-02-04 00:21:11,309 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 00:21:11,309 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-04 00:21:11,317 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-04 00:21:11,330 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-02-04 00:21:11,331 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 00:21:11,333 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 00:21:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-02-04 00:21:11,360 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 00:21:11,360 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2018-02-04 00:21:11,360 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 00:21:11,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 00:21:11,361 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-02-04 00:21:11,361 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 7 states. [2018-02-04 00:21:11,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 00:21:11,391 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2018-02-04 00:21:11,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 00:21:11,391 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2018-02-04 00:21:11,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 00:21:11,391 INFO L225 Difference]: With dead ends: 59 [2018-02-04 00:21:11,391 INFO L226 Difference]: Without dead ends: 0 [2018-02-04 00:21:11,391 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-02-04 00:21:11,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-04 00:21:11,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-04 00:21:11,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-04 00:21:11,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-04 00:21:11,392 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2018-02-04 00:21:11,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 00:21:11,392 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-04 00:21:11,392 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 00:21:11,392 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-04 00:21:11,392 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-04 00:21:11,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 12:21:11 BoogieIcfgContainer [2018-02-04 00:21:11,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 00:21:11,396 INFO L168 Benchmark]: Toolchain (without parser) took 2974.12 ms. Allocated memory was 400.6 MB in the beginning and 666.9 MB in the end (delta: 266.3 MB). Free memory was 357.2 MB in the beginning and 533.2 MB in the end (delta: -176.0 MB). Peak memory consumption was 90.3 MB. Max. memory is 5.3 GB. [2018-02-04 00:21:11,397 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 400.6 MB. Free memory is still 362.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 00:21:11,397 INFO L168 Benchmark]: CACSL2BoogieTranslator took 122.97 ms. Allocated memory is still 400.6 MB. Free memory was 357.2 MB in the beginning and 349.3 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. [2018-02-04 00:21:11,397 INFO L168 Benchmark]: Boogie Preprocessor took 22.61 ms. Allocated memory is still 400.6 MB. Free memory is still 349.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 00:21:11,397 INFO L168 Benchmark]: RCFGBuilder took 159.73 ms. Allocated memory is still 400.6 MB. Free memory was 349.3 MB in the beginning and 329.5 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 5.3 GB. [2018-02-04 00:21:11,397 INFO L168 Benchmark]: TraceAbstraction took 2666.47 ms. Allocated memory was 400.6 MB in the beginning and 666.9 MB in the end (delta: 266.3 MB). Free memory was 329.5 MB in the beginning and 533.2 MB in the end (delta: -203.8 MB). Peak memory consumption was 62.6 MB. Max. memory is 5.3 GB. [2018-02-04 00:21:11,398 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 400.6 MB. Free memory is still 362.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 122.97 ms. Allocated memory is still 400.6 MB. Free memory was 357.2 MB in the beginning and 349.3 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 22.61 ms. Allocated memory is still 400.6 MB. Free memory is still 349.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * RCFGBuilder took 159.73 ms. Allocated memory is still 400.6 MB. Free memory was 349.3 MB in the beginning and 329.5 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2666.47 ms. Allocated memory was 400.6 MB in the beginning and 666.9 MB in the end (delta: 266.3 MB). Free memory was 329.5 MB in the beginning and 533.2 MB in the end (delta: -203.8 MB). Peak memory consumption was 62.6 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: array index is always in bounds For all program executions holds that array index is always in bounds 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: 20]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 49 locations, 8 error locations. SAFE Result, 2.6s OverallTime, 14 OverallIterations, 5 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 471 SDtfs, 645 SDslu, 958 SDs, 0 SdLazy, 899 SolverSat, 111 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 338 GetRequests, 244 SyntacticMatches, 6 SemanticMatches, 88 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=11, 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, 14 MinimizatonAttempts, 128 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 649 NumberOfCodeBlocks, 604 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 629 ConstructedInterpolants, 20 QuantifiedInterpolants, 72655 SizeOfPredicates, 13 NumberOfNonLiveVariables, 633 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 20 InterpolantComputations, 11 PerfectInterpolantSequences, 217/249 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/ArraysOfVariableLength_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_00-21-11-404.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_00-21-11-404.csv Received shutdown request...