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/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-a74eeac-m [2018-02-02 19:08:16,480 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 19:08:16,481 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 19:08:16,493 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 19:08:16,494 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 19:08:16,495 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 19:08:16,495 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 19:08:16,497 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 19:08:16,499 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 19:08:16,500 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 19:08:16,500 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 19:08:16,500 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 19:08:16,501 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 19:08:16,502 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 19:08:16,503 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 19:08:16,505 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 19:08:16,506 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 19:08:16,508 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 19:08:16,509 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 19:08:16,510 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 19:08:16,511 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-02 19:08:16,512 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-02 19:08:16,512 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-02 19:08:16,513 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-02 19:08:16,513 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-02 19:08:16,514 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-02 19:08:16,514 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-02 19:08:16,515 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-02 19:08:16,515 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-02 19:08:16,515 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 19:08:16,516 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 19:08:16,516 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 [2018-02-02 19:08:16,526 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 19:08:16,526 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 19:08:16,527 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 19:08:16,527 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 19:08:16,527 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 19:08:16,527 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 19:08:16,528 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 19:08:16,528 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 19:08:16,528 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 19:08:16,528 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 19:08:16,528 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 19:08:16,528 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 19:08:16,529 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 19:08:16,529 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 19:08:16,529 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 19:08:16,529 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 19:08:16,529 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 19:08:16,529 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 19:08:16,529 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 19:08:16,530 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 19:08:16,530 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 19:08:16,530 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 19:08:16,530 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 19:08:16,530 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 19:08:16,530 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-02 19:08:16,559 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 19:08:16,568 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 19:08:16,571 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 19:08:16,573 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 19:08:16,573 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 19:08:16,574 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c [2018-02-02 19:08:16,670 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 19:08:16,671 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 19:08:16,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 19:08:16,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 19:08:16,675 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 19:08:16,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 07:08:16" (1/1) ... [2018-02-02 19:08:16,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49acf633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:08:16, skipping insertion in model container [2018-02-02 19:08:16,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 07:08:16" (1/1) ... [2018-02-02 19:08:16,688 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 19:08:16,699 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 19:08:16,782 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 19:08:16,792 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 19:08:16,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:08:16 WrapperNode [2018-02-02 19:08:16,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 19:08:16,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 19:08:16,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 19:08:16,796 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 19:08:16,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:08:16" (1/1) ... [2018-02-02 19:08:16,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:08:16" (1/1) ... [2018-02-02 19:08:16,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:08:16" (1/1) ... [2018-02-02 19:08:16,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:08:16" (1/1) ... [2018-02-02 19:08:16,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:08:16" (1/1) ... [2018-02-02 19:08:16,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:08:16" (1/1) ... [2018-02-02 19:08:16,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:08:16" (1/1) ... [2018-02-02 19:08:16,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 19:08:16,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 19:08:16,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 19:08:16,816 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 19:08:16,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:08:16" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 19:08:16,852 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 19:08:16,852 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 19:08:16,852 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-02-02 19:08:16,852 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 19:08:16,852 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 19:08:16,852 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 19:08:16,853 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 19:08:16,853 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 19:08:16,853 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 19:08:16,853 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-02-02 19:08:16,853 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 19:08:16,853 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 19:08:16,853 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 19:08:16,982 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 19:08:16,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 07:08:16 BoogieIcfgContainer [2018-02-02 19:08:16,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 19:08:16,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 19:08:16,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 19:08:16,985 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 19:08:16,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 07:08:16" (1/3) ... [2018-02-02 19:08:16,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e23a8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 07:08:16, skipping insertion in model container [2018-02-02 19:08:16,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:08:16" (2/3) ... [2018-02-02 19:08:16,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e23a8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 07:08:16, skipping insertion in model container [2018-02-02 19:08:16,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 07:08:16" (3/3) ... [2018-02-02 19:08:16,987 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_false-valid-deref-write.c [2018-02-02 19:08:16,992 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 19:08:16,996 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-02-02 19:08:17,023 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 19:08:17,023 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 19:08:17,023 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 19:08:17,023 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 19:08:17,023 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 19:08:17,024 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 19:08:17,024 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 19:08:17,024 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 19:08:17,025 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 19:08:17,036 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-02-02 19:08:17,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-02-02 19:08:17,045 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:17,046 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:17,046 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:17,050 INFO L82 PathProgramCache]: Analyzing trace with hash -215054890, now seen corresponding path program 1 times [2018-02-02 19:08:17,052 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:17,052 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:17,096 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:17,096 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:17,096 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:17,143 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:17,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:08:17,197 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:08:17,198 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 19:08:17,200 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 19:08:17,211 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 19:08:17,211 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 19:08:17,213 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2018-02-02 19:08:17,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:17,282 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2018-02-02 19:08:17,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 19:08:17,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-02-02 19:08:17,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:17,291 INFO L225 Difference]: With dead ends: 63 [2018-02-02 19:08:17,291 INFO L226 Difference]: Without dead ends: 59 [2018-02-02 19:08:17,292 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 19:08:17,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-02-02 19:08:17,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2018-02-02 19:08:17,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-02-02 19:08:17,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2018-02-02 19:08:17,357 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 11 [2018-02-02 19:08:17,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:17,358 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2018-02-02 19:08:17,358 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 19:08:17,358 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2018-02-02 19:08:17,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-02-02 19:08:17,358 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:17,358 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:17,358 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:17,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1100032001, now seen corresponding path program 1 times [2018-02-02 19:08:17,359 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:17,359 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:17,360 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:17,360 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:17,360 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:17,372 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:08:17,393 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:08:17,393 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 19:08:17,394 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 19:08:17,394 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 19:08:17,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 19:08:17,395 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 3 states. [2018-02-02 19:08:17,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:17,439 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2018-02-02 19:08:17,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 19:08:17,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-02-02 19:08:17,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:17,442 INFO L225 Difference]: With dead ends: 60 [2018-02-02 19:08:17,442 INFO L226 Difference]: Without dead ends: 60 [2018-02-02 19:08:17,443 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 19:08:17,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-02-02 19:08:17,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2018-02-02 19:08:17,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-02-02 19:08:17,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2018-02-02 19:08:17,450 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 16 [2018-02-02 19:08:17,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:17,451 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2018-02-02 19:08:17,451 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 19:08:17,451 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2018-02-02 19:08:17,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-02 19:08:17,451 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:17,452 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:17,452 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:17,452 INFO L82 PathProgramCache]: Analyzing trace with hash -258746290, now seen corresponding path program 1 times [2018-02-02 19:08:17,452 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:17,452 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:17,453 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:17,453 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:17,453 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:17,472 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:17,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:08:17,598 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:08:17,599 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 19:08:17,599 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 19:08:17,599 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 19:08:17,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-02-02 19:08:17,600 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 6 states. [2018-02-02 19:08:17,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:17,693 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-02-02 19:08:17,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 19:08:17,693 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-02-02 19:08:17,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:17,694 INFO L225 Difference]: With dead ends: 54 [2018-02-02 19:08:17,694 INFO L226 Difference]: Without dead ends: 54 [2018-02-02 19:08:17,695 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-02-02 19:08:17,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-02-02 19:08:17,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2018-02-02 19:08:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-02-02 19:08:17,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2018-02-02 19:08:17,699 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 17 [2018-02-02 19:08:17,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:17,699 INFO L432 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2018-02-02 19:08:17,699 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 19:08:17,699 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2018-02-02 19:08:17,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-02 19:08:17,700 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:17,700 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:17,700 INFO L371 AbstractCegarLoop]: === Iteration 4 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:17,701 INFO L82 PathProgramCache]: Analyzing trace with hash -258746291, now seen corresponding path program 1 times [2018-02-02 19:08:17,701 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:17,701 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:17,702 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:17,702 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:17,702 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:17,710 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:17,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:08:17,742 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:08:17,742 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 19:08:17,743 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 19:08:17,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 19:08:17,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 19:08:17,743 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 5 states. [2018-02-02 19:08:17,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:17,773 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2018-02-02 19:08:17,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 19:08:17,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-02-02 19:08:17,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:17,774 INFO L225 Difference]: With dead ends: 50 [2018-02-02 19:08:17,774 INFO L226 Difference]: Without dead ends: 50 [2018-02-02 19:08:17,775 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-02 19:08:17,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-02-02 19:08:17,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-02-02 19:08:17,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-02-02 19:08:17,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2018-02-02 19:08:17,777 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 17 [2018-02-02 19:08:17,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:17,777 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2018-02-02 19:08:17,777 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 19:08:17,777 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2018-02-02 19:08:17,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-02 19:08:17,777 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:17,778 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:17,778 INFO L371 AbstractCegarLoop]: === Iteration 5 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:17,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1933852231, now seen corresponding path program 1 times [2018-02-02 19:08:17,778 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:17,778 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:17,779 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:17,779 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:17,779 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:17,786 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:08:17,814 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:17,814 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 [2018-02-02 19:08:17,822 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:17,843 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:17,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:08:17,877 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:17,877 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-02-02 19:08:17,878 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 19:08:17,878 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 19:08:17,878 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 19:08:17,878 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 4 states. [2018-02-02 19:08:17,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:17,917 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2018-02-02 19:08:17,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 19:08:17,917 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-02-02 19:08:17,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:17,918 INFO L225 Difference]: With dead ends: 65 [2018-02-02 19:08:17,919 INFO L226 Difference]: Without dead ends: 65 [2018-02-02 19:08:17,919 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 19:08:17,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-02-02 19:08:17,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2018-02-02 19:08:17,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-02-02 19:08:17,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2018-02-02 19:08:17,923 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 22 [2018-02-02 19:08:17,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:17,924 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2018-02-02 19:08:17,924 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 19:08:17,924 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2018-02-02 19:08:17,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-02 19:08:17,925 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:17,925 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:17,925 INFO L371 AbstractCegarLoop]: === Iteration 6 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:17,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1974903447, now seen corresponding path program 1 times [2018-02-02 19:08:17,925 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:17,925 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:17,926 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:17,926 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:17,927 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:17,935 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:08:17,965 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:08:17,965 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 19:08:17,965 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 19:08:17,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 19:08:17,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-02-02 19:08:17,966 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 5 states. [2018-02-02 19:08:18,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:18,002 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2018-02-02 19:08:18,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 19:08:18,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-02-02 19:08:18,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:18,003 INFO L225 Difference]: With dead ends: 66 [2018-02-02 19:08:18,003 INFO L226 Difference]: Without dead ends: 66 [2018-02-02 19:08:18,003 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-02-02 19:08:18,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-02-02 19:08:18,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2018-02-02 19:08:18,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-02-02 19:08:18,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-02-02 19:08:18,005 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 23 [2018-02-02 19:08:18,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:18,006 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-02-02 19:08:18,006 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 19:08:18,006 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-02-02 19:08:18,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-02-02 19:08:18,006 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:18,006 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:18,006 INFO L371 AbstractCegarLoop]: === Iteration 7 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:18,007 INFO L82 PathProgramCache]: Analyzing trace with hash -280350351, now seen corresponding path program 2 times [2018-02-02 19:08:18,007 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:18,007 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:18,007 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:18,007 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:18,007 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:18,017 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:18,061 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:08:18,061 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:18,061 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 [2018-02-02 19:08:18,067 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 19:08:18,084 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-02 19:08:18,084 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:18,086 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:18,134 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:08:18,161 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-02 19:08:18,161 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2018-02-02 19:08:18,161 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-02-02 19:08:18,162 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-02-02 19:08:18,162 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-02-02 19:08:18,162 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 12 states. [2018-02-02 19:08:18,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:18,286 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2018-02-02 19:08:18,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-02 19:08:18,287 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2018-02-02 19:08:18,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:18,288 INFO L225 Difference]: With dead ends: 88 [2018-02-02 19:08:18,288 INFO L226 Difference]: Without dead ends: 88 [2018-02-02 19:08:18,288 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2018-02-02 19:08:18,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-02-02 19:08:18,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 72. [2018-02-02 19:08:18,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-02-02 19:08:18,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2018-02-02 19:08:18,293 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 28 [2018-02-02 19:08:18,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:18,294 INFO L432 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2018-02-02 19:08:18,294 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-02-02 19:08:18,294 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2018-02-02 19:08:18,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-02-02 19:08:18,295 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:18,295 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] [2018-02-02 19:08:18,295 INFO L371 AbstractCegarLoop]: === Iteration 8 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:18,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1474818454, now seen corresponding path program 1 times [2018-02-02 19:08:18,295 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:18,295 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:18,296 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:18,296 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:18,296 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:18,305 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:18,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:08:18,331 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:18,331 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 [2018-02-02 19:08:18,337 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:18,349 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:08:18,401 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-02 19:08:18,401 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2018-02-02 19:08:18,402 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 19:08:18,402 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 19:08:18,402 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-02-02 19:08:18,402 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand 7 states. [2018-02-02 19:08:18,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:18,496 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2018-02-02 19:08:18,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 19:08:18,497 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2018-02-02 19:08:18,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:18,498 INFO L225 Difference]: With dead ends: 104 [2018-02-02 19:08:18,498 INFO L226 Difference]: Without dead ends: 98 [2018-02-02 19:08:18,498 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-02-02 19:08:18,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-02-02 19:08:18,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 81. [2018-02-02 19:08:18,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-02-02 19:08:18,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2018-02-02 19:08:18,507 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 31 [2018-02-02 19:08:18,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:18,507 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2018-02-02 19:08:18,507 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 19:08:18,507 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2018-02-02 19:08:18,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-02-02 19:08:18,508 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:18,508 INFO L351 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:18,508 INFO L371 AbstractCegarLoop]: === Iteration 9 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:18,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1033895800, now seen corresponding path program 1 times [2018-02-02 19:08:18,508 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:18,509 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:18,509 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:18,509 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:18,510 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:18,521 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-02-02 19:08:18,558 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:18,558 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 [2018-02-02 19:08:18,566 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:18,587 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:18,612 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-02-02 19:08:18,629 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:18,629 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-02-02 19:08:18,629 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-02 19:08:18,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-02 19:08:18,630 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-02-02 19:08:18,630 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 8 states. [2018-02-02 19:08:18,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:18,698 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2018-02-02 19:08:18,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 19:08:18,699 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2018-02-02 19:08:18,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:18,699 INFO L225 Difference]: With dead ends: 90 [2018-02-02 19:08:18,699 INFO L226 Difference]: Without dead ends: 84 [2018-02-02 19:08:18,699 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-02-02 19:08:18,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-02-02 19:08:18,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2018-02-02 19:08:18,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-02-02 19:08:18,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2018-02-02 19:08:18,702 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 46 [2018-02-02 19:08:18,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:18,702 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2018-02-02 19:08:18,702 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-02 19:08:18,702 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2018-02-02 19:08:18,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-02-02 19:08:18,703 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:18,703 INFO L351 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:18,703 INFO L371 AbstractCegarLoop]: === Iteration 10 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:18,703 INFO L82 PathProgramCache]: Analyzing trace with hash -821508032, now seen corresponding path program 2 times [2018-02-02 19:08:18,703 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:18,703 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:18,704 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:18,704 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:18,704 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:18,715 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:18,772 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-02-02 19:08:18,772 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:18,772 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 [2018-02-02 19:08:18,780 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 19:08:18,801 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-02 19:08:18,802 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:18,804 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:18,818 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-02-02 19:08:18,849 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:18,849 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-02-02 19:08:18,849 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 19:08:18,849 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 19:08:18,849 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 19:08:18,850 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 5 states. [2018-02-02 19:08:18,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:18,879 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2018-02-02 19:08:18,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 19:08:18,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2018-02-02 19:08:18,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:18,880 INFO L225 Difference]: With dead ends: 93 [2018-02-02 19:08:18,880 INFO L226 Difference]: Without dead ends: 93 [2018-02-02 19:08:18,881 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 19:08:18,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-02-02 19:08:18,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2018-02-02 19:08:18,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-02-02 19:08:18,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 92 transitions. [2018-02-02 19:08:18,886 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 92 transitions. Word has length 52 [2018-02-02 19:08:18,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:18,886 INFO L432 AbstractCegarLoop]: Abstraction has 87 states and 92 transitions. [2018-02-02 19:08:18,887 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 19:08:18,887 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 92 transitions. [2018-02-02 19:08:18,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-02-02 19:08:18,888 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:18,888 INFO L351 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:18,888 INFO L371 AbstractCegarLoop]: === Iteration 11 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:18,888 INFO L82 PathProgramCache]: Analyzing trace with hash -828115272, now seen corresponding path program 3 times [2018-02-02 19:08:18,888 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:18,889 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:18,889 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:18,889 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:18,890 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:18,919 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:18,991 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 70 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-02-02 19:08:18,992 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:18,992 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 [2018-02-02 19:08:18,999 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-02 19:08:19,010 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-02-02 19:08:19,010 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:19,012 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 63 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-02-02 19:08:19,091 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:19,091 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2018-02-02 19:08:19,091 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-02-02 19:08:19,091 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-02-02 19:08:19,092 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2018-02-02 19:08:19,092 INFO L87 Difference]: Start difference. First operand 87 states and 92 transitions. Second operand 14 states. [2018-02-02 19:08:19,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:19,335 INFO L93 Difference]: Finished difference Result 128 states and 133 transitions. [2018-02-02 19:08:19,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-02 19:08:19,336 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2018-02-02 19:08:19,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:19,337 INFO L225 Difference]: With dead ends: 128 [2018-02-02 19:08:19,337 INFO L226 Difference]: Without dead ends: 128 [2018-02-02 19:08:19,337 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2018-02-02 19:08:19,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-02-02 19:08:19,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 113. [2018-02-02 19:08:19,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-02-02 19:08:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2018-02-02 19:08:19,343 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 58 [2018-02-02 19:08:19,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:19,343 INFO L432 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2018-02-02 19:08:19,343 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-02-02 19:08:19,343 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2018-02-02 19:08:19,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-02-02 19:08:19,344 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:19,345 INFO L351 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 3, 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] [2018-02-02 19:08:19,345 INFO L371 AbstractCegarLoop]: === Iteration 12 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:19,345 INFO L82 PathProgramCache]: Analyzing trace with hash -81663113, now seen corresponding path program 1 times [2018-02-02 19:08:19,345 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:19,345 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:19,346 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:19,346 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:19,346 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:19,359 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 43 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-02-02 19:08:19,418 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:19,418 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:19,424 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:19,441 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:19,505 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 47 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-02-02 19:08:19,524 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:19,525 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-02-02 19:08:19,525 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-02-02 19:08:19,525 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-02-02 19:08:19,525 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-02-02 19:08:19,525 INFO L87 Difference]: Start difference. First operand 113 states and 119 transitions. Second operand 14 states. [2018-02-02 19:08:19,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:19,650 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2018-02-02 19:08:19,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-02-02 19:08:19,650 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2018-02-02 19:08:19,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:19,651 INFO L225 Difference]: With dead ends: 108 [2018-02-02 19:08:19,651 INFO L226 Difference]: Without dead ends: 102 [2018-02-02 19:08:19,651 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2018-02-02 19:08:19,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-02-02 19:08:19,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2018-02-02 19:08:19,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-02-02 19:08:19,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2018-02-02 19:08:19,655 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 67 [2018-02-02 19:08:19,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:19,655 INFO L432 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2018-02-02 19:08:19,655 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-02-02 19:08:19,655 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2018-02-02 19:08:19,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-02-02 19:08:19,656 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:19,656 INFO L351 BasicCegarLoop]: trace histogram [11, 9, 8, 8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:19,656 INFO L371 AbstractCegarLoop]: === Iteration 13 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:19,656 INFO L82 PathProgramCache]: Analyzing trace with hash -85555777, now seen corresponding path program 4 times [2018-02-02 19:08:19,656 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:19,656 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:19,657 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:19,657 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:19,657 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:19,672 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:19,717 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 121 proven. 27 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-02-02 19:08:19,718 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:19,718 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:19,723 INFO L109 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-02 19:08:19,741 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-02-02 19:08:19,741 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:19,743 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:19,781 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 121 proven. 27 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-02-02 19:08:19,800 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:19,800 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2018-02-02 19:08:19,801 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-02 19:08:19,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-02 19:08:19,801 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-02-02 19:08:19,801 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand 10 states. [2018-02-02 19:08:19,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:19,854 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2018-02-02 19:08:19,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 19:08:19,854 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2018-02-02 19:08:19,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:19,855 INFO L225 Difference]: With dead ends: 104 [2018-02-02 19:08:19,855 INFO L226 Difference]: Without dead ends: 104 [2018-02-02 19:08:19,855 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-02-02 19:08:19,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-02-02 19:08:19,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2018-02-02 19:08:19,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-02-02 19:08:19,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2018-02-02 19:08:19,859 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 88 [2018-02-02 19:08:19,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:19,859 INFO L432 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2018-02-02 19:08:19,859 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-02 19:08:19,860 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2018-02-02 19:08:19,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-02-02 19:08:19,861 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:19,861 INFO L351 BasicCegarLoop]: trace histogram [12, 10, 9, 9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:19,861 INFO L371 AbstractCegarLoop]: === Iteration 14 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:19,861 INFO L82 PathProgramCache]: Analyzing trace with hash 414669047, now seen corresponding path program 5 times [2018-02-02 19:08:19,861 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:19,861 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:19,862 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:19,862 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:19,862 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:19,874 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:19,969 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 194 proven. 25 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-02-02 19:08:19,970 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:19,970 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:19,978 INFO L109 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-02 19:08:20,010 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-02-02 19:08:20,010 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:20,013 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 205 proven. 14 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-02-02 19:08:20,126 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:20,126 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2018-02-02 19:08:20,127 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-02-02 19:08:20,127 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-02-02 19:08:20,127 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2018-02-02 19:08:20,128 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand 18 states. [2018-02-02 19:08:20,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:20,334 INFO L93 Difference]: Finished difference Result 139 states and 142 transitions. [2018-02-02 19:08:20,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-02-02 19:08:20,335 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 94 [2018-02-02 19:08:20,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:20,336 INFO L225 Difference]: With dead ends: 139 [2018-02-02 19:08:20,336 INFO L226 Difference]: Without dead ends: 139 [2018-02-02 19:08:20,336 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2018-02-02 19:08:20,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-02-02 19:08:20,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 134. [2018-02-02 19:08:20,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-02-02 19:08:20,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2018-02-02 19:08:20,340 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 94 [2018-02-02 19:08:20,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:20,340 INFO L432 AbstractCegarLoop]: Abstraction has 134 states and 137 transitions. [2018-02-02 19:08:20,340 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-02-02 19:08:20,341 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 137 transitions. [2018-02-02 19:08:20,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-02-02 19:08:20,342 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:20,342 INFO L351 BasicCegarLoop]: trace histogram [16, 13, 12, 12, 12, 12, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:20,342 INFO L371 AbstractCegarLoop]: === Iteration 15 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:20,342 INFO L82 PathProgramCache]: Analyzing trace with hash 347418750, now seen corresponding path program 6 times [2018-02-02 19:08:20,342 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:20,342 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:20,343 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:20,343 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:20,343 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:20,356 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:20,418 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 401 proven. 24 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-02-02 19:08:20,418 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:20,418 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:20,424 INFO L109 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-02 19:08:20,454 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2018-02-02 19:08:20,454 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:20,456 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:20,536 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 313 proven. 119 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-02-02 19:08:20,555 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:20,555 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2018-02-02 19:08:20,555 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-02-02 19:08:20,555 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-02-02 19:08:20,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2018-02-02 19:08:20,555 INFO L87 Difference]: Start difference. First operand 134 states and 137 transitions. Second operand 21 states. [2018-02-02 19:08:20,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:20,863 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2018-02-02 19:08:20,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-02-02 19:08:20,863 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 124 [2018-02-02 19:08:20,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:20,864 INFO L225 Difference]: With dead ends: 145 [2018-02-02 19:08:20,864 INFO L226 Difference]: Without dead ends: 139 [2018-02-02 19:08:20,864 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=254, Invalid=1078, Unknown=0, NotChecked=0, Total=1332 [2018-02-02 19:08:20,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-02-02 19:08:20,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 134. [2018-02-02 19:08:20,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-02-02 19:08:20,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2018-02-02 19:08:20,867 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 124 [2018-02-02 19:08:20,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:20,867 INFO L432 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2018-02-02 19:08:20,867 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-02-02 19:08:20,867 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2018-02-02 19:08:20,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-02-02 19:08:20,874 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:20,874 INFO L351 BasicCegarLoop]: trace histogram [17, 14, 13, 13, 13, 13, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:20,875 INFO L371 AbstractCegarLoop]: === Iteration 16 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:20,875 INFO L82 PathProgramCache]: Analyzing trace with hash 714000310, now seen corresponding path program 7 times [2018-02-02 19:08:20,875 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:20,875 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:20,876 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:20,876 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:20,876 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:20,889 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 273 proven. 48 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-02-02 19:08:20,945 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:20,945 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:20,951 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:20,978 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:20,990 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 273 proven. 48 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-02-02 19:08:21,008 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:21,008 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-02-02 19:08:21,008 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 19:08:21,009 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 19:08:21,009 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-02 19:08:21,009 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand 7 states. [2018-02-02 19:08:21,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:21,075 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2018-02-02 19:08:21,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 19:08:21,075 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2018-02-02 19:08:21,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:21,075 INFO L225 Difference]: With dead ends: 146 [2018-02-02 19:08:21,076 INFO L226 Difference]: Without dead ends: 146 [2018-02-02 19:08:21,076 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-02 19:08:21,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-02-02 19:08:21,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 140. [2018-02-02 19:08:21,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-02-02 19:08:21,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 142 transitions. [2018-02-02 19:08:21,079 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 142 transitions. Word has length 130 [2018-02-02 19:08:21,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:21,080 INFO L432 AbstractCegarLoop]: Abstraction has 140 states and 142 transitions. [2018-02-02 19:08:21,080 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 19:08:21,080 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 142 transitions. [2018-02-02 19:08:21,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-02-02 19:08:21,081 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:21,081 INFO L351 BasicCegarLoop]: trace histogram [18, 15, 14, 14, 14, 14, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:21,081 INFO L371 AbstractCegarLoop]: === Iteration 17 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:21,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1770915246, now seen corresponding path program 8 times [2018-02-02 19:08:21,082 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:21,082 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:21,082 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:21,082 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:21,082 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:21,098 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:21,213 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 397 proven. 44 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-02-02 19:08:21,213 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:21,214 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:21,218 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 19:08:21,244 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-02 19:08:21,245 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:21,249 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:21,338 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 411 proven. 30 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-02-02 19:08:21,360 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:21,360 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 21 [2018-02-02 19:08:21,360 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-02-02 19:08:21,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-02-02 19:08:21,361 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-02-02 19:08:21,361 INFO L87 Difference]: Start difference. First operand 140 states and 142 transitions. Second operand 21 states. [2018-02-02 19:08:21,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:21,529 INFO L93 Difference]: Finished difference Result 187 states and 190 transitions. [2018-02-02 19:08:21,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-02-02 19:08:21,529 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 136 [2018-02-02 19:08:21,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:21,530 INFO L225 Difference]: With dead ends: 187 [2018-02-02 19:08:21,530 INFO L226 Difference]: Without dead ends: 187 [2018-02-02 19:08:21,530 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=247, Invalid=623, Unknown=0, NotChecked=0, Total=870 [2018-02-02 19:08:21,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-02-02 19:08:21,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 182. [2018-02-02 19:08:21,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-02-02 19:08:21,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 185 transitions. [2018-02-02 19:08:21,533 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 185 transitions. Word has length 136 [2018-02-02 19:08:21,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:21,534 INFO L432 AbstractCegarLoop]: Abstraction has 182 states and 185 transitions. [2018-02-02 19:08:21,534 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-02-02 19:08:21,534 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 185 transitions. [2018-02-02 19:08:21,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-02-02 19:08:21,534 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:21,534 INFO L351 BasicCegarLoop]: trace histogram [23, 19, 18, 18, 18, 18, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:21,534 INFO L371 AbstractCegarLoop]: === Iteration 18 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:21,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1745720749, now seen corresponding path program 9 times [2018-02-02 19:08:21,535 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:21,535 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:21,535 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:21,535 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:21,535 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:21,547 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 806 proven. 44 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2018-02-02 19:08:21,648 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:21,649 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:21,654 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-02 19:08:21,682 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-02-02 19:08:21,682 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:21,685 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:21,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 503 proven. 57 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2018-02-02 19:08:21,779 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:21,779 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2018-02-02 19:08:21,779 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-02-02 19:08:21,779 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-02-02 19:08:21,779 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2018-02-02 19:08:21,779 INFO L87 Difference]: Start difference. First operand 182 states and 185 transitions. Second operand 22 states. [2018-02-02 19:08:22,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:22,147 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2018-02-02 19:08:22,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-02-02 19:08:22,147 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 172 [2018-02-02 19:08:22,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:22,148 INFO L225 Difference]: With dead ends: 242 [2018-02-02 19:08:22,148 INFO L226 Difference]: Without dead ends: 233 [2018-02-02 19:08:22,149 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=365, Invalid=1705, Unknown=0, NotChecked=0, Total=2070 [2018-02-02 19:08:22,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-02-02 19:08:22,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 224. [2018-02-02 19:08:22,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-02-02 19:08:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 226 transitions. [2018-02-02 19:08:22,152 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 226 transitions. Word has length 172 [2018-02-02 19:08:22,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:22,152 INFO L432 AbstractCegarLoop]: Abstraction has 224 states and 226 transitions. [2018-02-02 19:08:22,153 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-02-02 19:08:22,153 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 226 transitions. [2018-02-02 19:08:22,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-02-02 19:08:22,153 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:22,153 INFO L351 BasicCegarLoop]: trace histogram [30, 25, 24, 24, 24, 24, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:22,153 INFO L371 AbstractCegarLoop]: === Iteration 19 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:22,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1417597148, now seen corresponding path program 10 times [2018-02-02 19:08:22,154 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:22,154 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:22,154 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:22,154 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:22,154 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:22,169 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2123 backedges. 1280 proven. 70 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2018-02-02 19:08:22,315 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:22,315 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:22,321 INFO L109 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-02 19:08:22,357 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-02-02 19:08:22,357 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:22,359 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:22,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2123 backedges. 1280 proven. 70 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2018-02-02 19:08:22,464 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:22,465 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2018-02-02 19:08:22,465 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-02-02 19:08:22,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-02-02 19:08:22,466 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2018-02-02 19:08:22,466 INFO L87 Difference]: Start difference. First operand 224 states and 226 transitions. Second operand 20 states. [2018-02-02 19:08:22,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:22,654 INFO L93 Difference]: Finished difference Result 250 states and 252 transitions. [2018-02-02 19:08:22,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-02-02 19:08:22,659 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 220 [2018-02-02 19:08:22,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:22,660 INFO L225 Difference]: With dead ends: 250 [2018-02-02 19:08:22,660 INFO L226 Difference]: Without dead ends: 244 [2018-02-02 19:08:22,660 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2018-02-02 19:08:22,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-02-02 19:08:22,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 235. [2018-02-02 19:08:22,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-02-02 19:08:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 237 transitions. [2018-02-02 19:08:22,664 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 237 transitions. Word has length 220 [2018-02-02 19:08:22,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:22,664 INFO L432 AbstractCegarLoop]: Abstraction has 235 states and 237 transitions. [2018-02-02 19:08:22,664 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-02-02 19:08:22,664 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 237 transitions. [2018-02-02 19:08:22,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-02-02 19:08:22,665 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:22,666 INFO L351 BasicCegarLoop]: trace histogram [31, 26, 25, 25, 25, 25, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:22,666 INFO L371 AbstractCegarLoop]: === Iteration 20 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:22,666 INFO L82 PathProgramCache]: Analyzing trace with hash 11647380, now seen corresponding path program 11 times [2018-02-02 19:08:22,666 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:22,666 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:22,667 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:22,667 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:22,667 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:22,694 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:22,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 720 proven. 75 refuted. 0 times theorem prover too weak. 1485 trivial. 0 not checked. [2018-02-02 19:08:22,812 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:22,812 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:22,820 INFO L109 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-02 19:08:22,877 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-02-02 19:08:22,878 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:22,882 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:22,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 720 proven. 75 refuted. 0 times theorem prover too weak. 1485 trivial. 0 not checked. [2018-02-02 19:08:22,986 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:22,986 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-02-02 19:08:22,987 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-02-02 19:08:22,987 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-02-02 19:08:22,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-02-02 19:08:22,987 INFO L87 Difference]: Start difference. First operand 235 states and 237 transitions. Second operand 15 states. [2018-02-02 19:08:23,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:23,070 INFO L93 Difference]: Finished difference Result 243 states and 245 transitions. [2018-02-02 19:08:23,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 19:08:23,071 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 226 [2018-02-02 19:08:23,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:23,072 INFO L225 Difference]: With dead ends: 243 [2018-02-02 19:08:23,072 INFO L226 Difference]: Without dead ends: 243 [2018-02-02 19:08:23,072 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-02-02 19:08:23,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-02-02 19:08:23,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 236. [2018-02-02 19:08:23,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-02-02 19:08:23,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 238 transitions. [2018-02-02 19:08:23,077 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 238 transitions. Word has length 226 [2018-02-02 19:08:23,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:23,077 INFO L432 AbstractCegarLoop]: Abstraction has 236 states and 238 transitions. [2018-02-02 19:08:23,078 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-02-02 19:08:23,078 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 238 transitions. [2018-02-02 19:08:23,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-02-02 19:08:23,079 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:23,079 INFO L351 BasicCegarLoop]: trace histogram [32, 27, 26, 26, 26, 26, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:23,079 INFO L371 AbstractCegarLoop]: === Iteration 21 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:23,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1000315148, now seen corresponding path program 12 times [2018-02-02 19:08:23,079 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:23,080 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:23,080 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:23,080 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:23,080 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:23,103 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2443 backedges. 850 proven. 108 refuted. 0 times theorem prover too weak. 1485 trivial. 0 not checked. [2018-02-02 19:08:23,236 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:23,236 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:23,244 INFO L109 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-02 19:08:23,319 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-02-02 19:08:23,319 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:23,323 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2443 backedges. 850 proven. 108 refuted. 0 times theorem prover too weak. 1485 trivial. 0 not checked. [2018-02-02 19:08:23,390 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:23,390 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2018-02-02 19:08:23,390 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-02-02 19:08:23,390 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-02-02 19:08:23,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-02-02 19:08:23,391 INFO L87 Difference]: Start difference. First operand 236 states and 238 transitions. Second operand 14 states. [2018-02-02 19:08:23,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:23,468 INFO L93 Difference]: Finished difference Result 261 states and 265 transitions. [2018-02-02 19:08:23,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 19:08:23,468 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 232 [2018-02-02 19:08:23,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:23,469 INFO L225 Difference]: With dead ends: 261 [2018-02-02 19:08:23,469 INFO L226 Difference]: Without dead ends: 261 [2018-02-02 19:08:23,469 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2018-02-02 19:08:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-02-02 19:08:23,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 242. [2018-02-02 19:08:23,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-02-02 19:08:23,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 245 transitions. [2018-02-02 19:08:23,473 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 245 transitions. Word has length 232 [2018-02-02 19:08:23,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:23,473 INFO L432 AbstractCegarLoop]: Abstraction has 242 states and 245 transitions. [2018-02-02 19:08:23,473 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-02-02 19:08:23,473 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 245 transitions. [2018-02-02 19:08:23,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-02-02 19:08:23,474 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:23,474 INFO L351 BasicCegarLoop]: trace histogram [33, 28, 27, 27, 27, 27, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:23,474 INFO L371 AbstractCegarLoop]: === Iteration 22 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:23,474 INFO L82 PathProgramCache]: Analyzing trace with hash 710278788, now seen corresponding path program 13 times [2018-02-02 19:08:23,475 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:23,475 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:23,475 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:23,475 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:23,475 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:23,495 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:23,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2612 backedges. 1112 proven. 100 refuted. 0 times theorem prover too weak. 1400 trivial. 0 not checked. [2018-02-02 19:08:23,724 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:23,724 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:23,731 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:23,767 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:23,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2612 backedges. 1132 proven. 80 refuted. 0 times theorem prover too weak. 1400 trivial. 0 not checked. [2018-02-02 19:08:23,893 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:23,893 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 27 [2018-02-02 19:08:23,894 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-02-02 19:08:23,894 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-02-02 19:08:23,894 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2018-02-02 19:08:23,894 INFO L87 Difference]: Start difference. First operand 242 states and 245 transitions. Second operand 27 states. [2018-02-02 19:08:24,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:24,186 INFO L93 Difference]: Finished difference Result 310 states and 314 transitions. [2018-02-02 19:08:24,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-02-02 19:08:24,187 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 238 [2018-02-02 19:08:24,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:24,188 INFO L225 Difference]: With dead ends: 310 [2018-02-02 19:08:24,188 INFO L226 Difference]: Without dead ends: 310 [2018-02-02 19:08:24,189 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=429, Invalid=1131, Unknown=0, NotChecked=0, Total=1560 [2018-02-02 19:08:24,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-02-02 19:08:24,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 302. [2018-02-02 19:08:24,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-02-02 19:08:24,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 306 transitions. [2018-02-02 19:08:24,194 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 306 transitions. Word has length 238 [2018-02-02 19:08:24,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:24,195 INFO L432 AbstractCegarLoop]: Abstraction has 302 states and 306 transitions. [2018-02-02 19:08:24,195 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-02-02 19:08:24,195 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 306 transitions. [2018-02-02 19:08:24,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-02-02 19:08:24,196 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:24,197 INFO L351 BasicCegarLoop]: trace histogram [40, 34, 33, 33, 33, 33, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:24,197 INFO L371 AbstractCegarLoop]: === Iteration 23 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:24,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1500368397, now seen corresponding path program 14 times [2018-02-02 19:08:24,197 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:24,197 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:24,198 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:24,198 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:24,198 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:24,221 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3885 backedges. 2231 proven. 102 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2018-02-02 19:08:24,457 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:24,457 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:24,465 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 19:08:24,535 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-02 19:08:24,535 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:24,540 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3885 backedges. 2231 proven. 102 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2018-02-02 19:08:24,707 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:24,707 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 23 [2018-02-02 19:08:24,707 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-02-02 19:08:24,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-02-02 19:08:24,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2018-02-02 19:08:24,707 INFO L87 Difference]: Start difference. First operand 302 states and 306 transitions. Second operand 23 states. [2018-02-02 19:08:24,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:24,876 INFO L93 Difference]: Finished difference Result 314 states and 316 transitions. [2018-02-02 19:08:24,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-02-02 19:08:24,876 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 286 [2018-02-02 19:08:24,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:24,877 INFO L225 Difference]: With dead ends: 314 [2018-02-02 19:08:24,877 INFO L226 Difference]: Without dead ends: 308 [2018-02-02 19:08:24,877 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2018-02-02 19:08:24,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-02-02 19:08:24,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 302. [2018-02-02 19:08:24,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-02-02 19:08:24,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 304 transitions. [2018-02-02 19:08:24,881 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 304 transitions. Word has length 286 [2018-02-02 19:08:24,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:24,882 INFO L432 AbstractCegarLoop]: Abstraction has 302 states and 304 transitions. [2018-02-02 19:08:24,882 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-02-02 19:08:24,882 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 304 transitions. [2018-02-02 19:08:24,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-02-02 19:08:24,883 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:24,883 INFO L351 BasicCegarLoop]: trace histogram [41, 35, 34, 34, 34, 34, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:24,883 INFO L371 AbstractCegarLoop]: === Iteration 24 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:24,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1441975659, now seen corresponding path program 15 times [2018-02-02 19:08:24,883 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:24,883 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:24,884 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:24,884 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:24,884 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:24,899 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:25,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4098 backedges. 1311 proven. 147 refuted. 0 times theorem prover too weak. 2640 trivial. 0 not checked. [2018-02-02 19:08:25,121 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:25,121 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:25,128 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-02 19:08:25,209 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-02-02 19:08:25,209 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:25,212 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:25,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4098 backedges. 1311 proven. 147 refuted. 0 times theorem prover too weak. 2640 trivial. 0 not checked. [2018-02-02 19:08:25,317 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:25,317 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-02-02 19:08:25,318 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-02-02 19:08:25,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-02-02 19:08:25,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-02-02 19:08:25,318 INFO L87 Difference]: Start difference. First operand 302 states and 304 transitions. Second operand 12 states. [2018-02-02 19:08:25,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:25,443 INFO L93 Difference]: Finished difference Result 317 states and 320 transitions. [2018-02-02 19:08:25,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-02 19:08:25,444 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 292 [2018-02-02 19:08:25,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:25,445 INFO L225 Difference]: With dead ends: 317 [2018-02-02 19:08:25,445 INFO L226 Difference]: Without dead ends: 317 [2018-02-02 19:08:25,445 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2018-02-02 19:08:25,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-02-02 19:08:25,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 308. [2018-02-02 19:08:25,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2018-02-02 19:08:25,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 311 transitions. [2018-02-02 19:08:25,449 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 311 transitions. Word has length 292 [2018-02-02 19:08:25,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:25,449 INFO L432 AbstractCegarLoop]: Abstraction has 308 states and 311 transitions. [2018-02-02 19:08:25,449 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-02-02 19:08:25,449 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 311 transitions. [2018-02-02 19:08:25,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-02-02 19:08:25,451 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:25,451 INFO L351 BasicCegarLoop]: trace histogram [42, 36, 35, 35, 35, 35, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:25,451 INFO L371 AbstractCegarLoop]: === Iteration 25 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:25,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1608658851, now seen corresponding path program 16 times [2018-02-02 19:08:25,451 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:25,451 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:25,452 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:25,452 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:25,452 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:25,475 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4317 backedges. 1660 proven. 137 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2018-02-02 19:08:25,777 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:25,777 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:25,784 INFO L109 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-02 19:08:25,834 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-02-02 19:08:25,835 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:25,838 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:26,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4317 backedges. 1683 proven. 114 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2018-02-02 19:08:26,093 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:26,093 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 30 [2018-02-02 19:08:26,093 INFO L409 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-02-02 19:08:26,093 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-02-02 19:08:26,094 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2018-02-02 19:08:26,094 INFO L87 Difference]: Start difference. First operand 308 states and 311 transitions. Second operand 30 states. [2018-02-02 19:08:26,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:26,454 INFO L93 Difference]: Finished difference Result 376 states and 380 transitions. [2018-02-02 19:08:26,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-02-02 19:08:26,454 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 298 [2018-02-02 19:08:26,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:26,456 INFO L225 Difference]: With dead ends: 376 [2018-02-02 19:08:26,456 INFO L226 Difference]: Without dead ends: 376 [2018-02-02 19:08:26,456 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=538, Invalid=1442, Unknown=0, NotChecked=0, Total=1980 [2018-02-02 19:08:26,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2018-02-02 19:08:26,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 368. [2018-02-02 19:08:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2018-02-02 19:08:26,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 372 transitions. [2018-02-02 19:08:26,462 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 372 transitions. Word has length 298 [2018-02-02 19:08:26,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:26,462 INFO L432 AbstractCegarLoop]: Abstraction has 368 states and 372 transitions. [2018-02-02 19:08:26,462 INFO L433 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-02-02 19:08:26,463 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 372 transitions. [2018-02-02 19:08:26,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-02-02 19:08:26,464 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:26,465 INFO L351 BasicCegarLoop]: trace histogram [50, 43, 42, 42, 42, 42, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:26,465 INFO L371 AbstractCegarLoop]: === Iteration 26 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:26,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1060515318, now seen corresponding path program 17 times [2018-02-02 19:08:26,465 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:26,465 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:26,466 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:26,466 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:26,466 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:26,492 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:26,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6181 backedges. 3323 proven. 140 refuted. 0 times theorem prover too weak. 2718 trivial. 0 not checked. [2018-02-02 19:08:26,851 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:26,851 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:26,857 INFO L109 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-02 19:08:26,959 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2018-02-02 19:08:26,959 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:26,965 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:27,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6181 backedges. 3323 proven. 140 refuted. 0 times theorem prover too weak. 2718 trivial. 0 not checked. [2018-02-02 19:08:27,122 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:27,123 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 26 [2018-02-02 19:08:27,123 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-02-02 19:08:27,123 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-02-02 19:08:27,124 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2018-02-02 19:08:27,124 INFO L87 Difference]: Start difference. First operand 368 states and 372 transitions. Second operand 26 states. [2018-02-02 19:08:27,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:27,397 INFO L93 Difference]: Finished difference Result 380 states and 382 transitions. [2018-02-02 19:08:27,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-02-02 19:08:27,398 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 352 [2018-02-02 19:08:27,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:27,399 INFO L225 Difference]: With dead ends: 380 [2018-02-02 19:08:27,399 INFO L226 Difference]: Without dead ends: 374 [2018-02-02 19:08:27,399 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=244, Invalid=748, Unknown=0, NotChecked=0, Total=992 [2018-02-02 19:08:27,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2018-02-02 19:08:27,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 368. [2018-02-02 19:08:27,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2018-02-02 19:08:27,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 370 transitions. [2018-02-02 19:08:27,403 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 370 transitions. Word has length 352 [2018-02-02 19:08:27,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:27,404 INFO L432 AbstractCegarLoop]: Abstraction has 368 states and 370 transitions. [2018-02-02 19:08:27,404 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-02-02 19:08:27,404 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 370 transitions. [2018-02-02 19:08:27,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-02-02 19:08:27,405 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:27,405 INFO L351 BasicCegarLoop]: trace histogram [51, 44, 43, 43, 43, 43, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:27,405 INFO L371 AbstractCegarLoop]: === Iteration 27 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:27,405 INFO L82 PathProgramCache]: Analyzing trace with hash -211464126, now seen corresponding path program 18 times [2018-02-02 19:08:27,405 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:27,405 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:27,406 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:27,406 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:27,406 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:27,422 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:27,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6450 backedges. 1911 proven. 192 refuted. 0 times theorem prover too weak. 4347 trivial. 0 not checked. [2018-02-02 19:08:27,650 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:27,650 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:27,658 INFO L109 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-02 19:08:27,751 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2018-02-02 19:08:27,751 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:27,757 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:27,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6450 backedges. 1955 proven. 162 refuted. 0 times theorem prover too weak. 4333 trivial. 0 not checked. [2018-02-02 19:08:28,012 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:28,013 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 23 [2018-02-02 19:08:28,013 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-02-02 19:08:28,013 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-02-02 19:08:28,013 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2018-02-02 19:08:28,014 INFO L87 Difference]: Start difference. First operand 368 states and 370 transitions. Second operand 24 states. [2018-02-02 19:08:28,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:28,785 INFO L93 Difference]: Finished difference Result 458 states and 463 transitions. [2018-02-02 19:08:28,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-02-02 19:08:28,785 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 358 [2018-02-02 19:08:28,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:28,787 INFO L225 Difference]: With dead ends: 458 [2018-02-02 19:08:28,787 INFO L226 Difference]: Without dead ends: 458 [2018-02-02 19:08:28,788 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 345 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=1068, Unknown=0, NotChecked=0, Total=1260 [2018-02-02 19:08:28,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2018-02-02 19:08:28,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 434. [2018-02-02 19:08:28,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-02-02 19:08:28,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 438 transitions. [2018-02-02 19:08:28,795 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 438 transitions. Word has length 358 [2018-02-02 19:08:28,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:28,795 INFO L432 AbstractCegarLoop]: Abstraction has 434 states and 438 transitions. [2018-02-02 19:08:28,795 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-02-02 19:08:28,796 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 438 transitions. [2018-02-02 19:08:28,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-02-02 19:08:28,798 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:28,799 INFO L351 BasicCegarLoop]: trace histogram [61, 53, 52, 52, 52, 52, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:28,799 INFO L371 AbstractCegarLoop]: === Iteration 28 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:28,799 INFO L82 PathProgramCache]: Analyzing trace with hash -894569959, now seen corresponding path program 19 times [2018-02-02 19:08:28,799 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:28,799 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:28,800 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:28,801 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:28,801 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:28,837 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9336 backedges. 4716 proven. 184 refuted. 0 times theorem prover too weak. 4436 trivial. 0 not checked. [2018-02-02 19:08:29,215 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:29,215 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:29,220 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:29,328 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9336 backedges. 4716 proven. 184 refuted. 0 times theorem prover too weak. 4436 trivial. 0 not checked. [2018-02-02 19:08:29,598 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:29,598 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 29 [2018-02-02 19:08:29,599 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-02-02 19:08:29,599 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-02-02 19:08:29,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2018-02-02 19:08:29,600 INFO L87 Difference]: Start difference. First operand 434 states and 438 transitions. Second operand 29 states. [2018-02-02 19:08:29,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:29,953 INFO L93 Difference]: Finished difference Result 456 states and 459 transitions. [2018-02-02 19:08:29,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-02-02 19:08:29,953 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 424 [2018-02-02 19:08:29,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:29,954 INFO L225 Difference]: With dead ends: 456 [2018-02-02 19:08:29,954 INFO L226 Difference]: Without dead ends: 450 [2018-02-02 19:08:29,954 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=954, Unknown=0, NotChecked=0, Total=1260 [2018-02-02 19:08:29,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2018-02-02 19:08:29,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 440. [2018-02-02 19:08:29,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2018-02-02 19:08:29,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 443 transitions. [2018-02-02 19:08:29,959 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 443 transitions. Word has length 424 [2018-02-02 19:08:29,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:29,959 INFO L432 AbstractCegarLoop]: Abstraction has 440 states and 443 transitions. [2018-02-02 19:08:29,959 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-02-02 19:08:29,959 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 443 transitions. [2018-02-02 19:08:29,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-02-02 19:08:29,962 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:29,962 INFO L351 BasicCegarLoop]: trace histogram [62, 54, 53, 53, 53, 53, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:29,962 INFO L371 AbstractCegarLoop]: === Iteration 29 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:29,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1459193583, now seen corresponding path program 20 times [2018-02-02 19:08:29,962 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:29,962 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:29,963 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:29,963 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:29,963 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:29,993 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 9667 backedges. 2668 proven. 243 refuted. 0 times theorem prover too weak. 6756 trivial. 0 not checked. [2018-02-02 19:08:30,303 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:30,303 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:30,311 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 19:08:30,413 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-02 19:08:30,413 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:30,419 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:30,555 INFO L134 CoverageAnalysis]: Checked inductivity of 9667 backedges. 2668 proven. 243 refuted. 0 times theorem prover too weak. 6756 trivial. 0 not checked. [2018-02-02 19:08:30,574 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:30,574 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2018-02-02 19:08:30,574 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-02-02 19:08:30,574 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-02-02 19:08:30,574 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2018-02-02 19:08:30,574 INFO L87 Difference]: Start difference. First operand 440 states and 443 transitions. Second operand 22 states. [2018-02-02 19:08:30,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:30,706 INFO L93 Difference]: Finished difference Result 468 states and 473 transitions. [2018-02-02 19:08:30,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-02 19:08:30,706 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 430 [2018-02-02 19:08:30,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:30,708 INFO L225 Difference]: With dead ends: 468 [2018-02-02 19:08:30,708 INFO L226 Difference]: Without dead ends: 468 [2018-02-02 19:08:30,708 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 420 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2018-02-02 19:08:30,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2018-02-02 19:08:30,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 446. [2018-02-02 19:08:30,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2018-02-02 19:08:30,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 450 transitions. [2018-02-02 19:08:30,714 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 450 transitions. Word has length 430 [2018-02-02 19:08:30,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:30,715 INFO L432 AbstractCegarLoop]: Abstraction has 446 states and 450 transitions. [2018-02-02 19:08:30,715 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-02-02 19:08:30,715 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 450 transitions. [2018-02-02 19:08:30,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-02-02 19:08:30,717 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:30,717 INFO L351 BasicCegarLoop]: trace histogram [63, 55, 54, 54, 54, 54, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:30,717 INFO L371 AbstractCegarLoop]: === Iteration 30 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:30,718 INFO L82 PathProgramCache]: Analyzing trace with hash -275511607, now seen corresponding path program 21 times [2018-02-02 19:08:30,718 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:30,718 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:30,718 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:30,718 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:30,719 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:30,747 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:31,414 INFO L134 CoverageAnalysis]: Checked inductivity of 10004 backedges. 3227 proven. 229 refuted. 0 times theorem prover too weak. 6548 trivial. 0 not checked. [2018-02-02 19:08:31,414 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:31,414 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:31,420 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-02 19:08:31,522 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-02-02 19:08:31,522 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:31,525 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10004 backedges. 2948 proven. 300 refuted. 0 times theorem prover too weak. 6756 trivial. 0 not checked. [2018-02-02 19:08:31,756 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:31,756 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 13] total 36 [2018-02-02 19:08:31,756 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-02-02 19:08:31,756 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-02-02 19:08:31,757 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1054, Unknown=0, NotChecked=0, Total=1260 [2018-02-02 19:08:31,757 INFO L87 Difference]: Start difference. First operand 446 states and 450 transitions. Second operand 36 states. [2018-02-02 19:08:32,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:32,526 INFO L93 Difference]: Finished difference Result 550 states and 556 transitions. [2018-02-02 19:08:32,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-02-02 19:08:32,526 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 436 [2018-02-02 19:08:32,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:32,528 INFO L225 Difference]: With dead ends: 550 [2018-02-02 19:08:32,528 INFO L226 Difference]: Without dead ends: 550 [2018-02-02 19:08:32,529 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=898, Invalid=3524, Unknown=0, NotChecked=0, Total=4422 [2018-02-02 19:08:32,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2018-02-02 19:08:32,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 530. [2018-02-02 19:08:32,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-02-02 19:08:32,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 536 transitions. [2018-02-02 19:08:32,533 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 536 transitions. Word has length 436 [2018-02-02 19:08:32,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:32,533 INFO L432 AbstractCegarLoop]: Abstraction has 530 states and 536 transitions. [2018-02-02 19:08:32,533 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-02-02 19:08:32,533 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 536 transitions. [2018-02-02 19:08:32,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2018-02-02 19:08:32,535 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:32,535 INFO L351 BasicCegarLoop]: trace histogram [74, 65, 64, 64, 64, 64, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:32,535 INFO L371 AbstractCegarLoop]: === Iteration 31 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:32,536 INFO L82 PathProgramCache]: Analyzing trace with hash -619007464, now seen corresponding path program 22 times [2018-02-02 19:08:32,536 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:32,536 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:32,536 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:32,536 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:32,536 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:32,557 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:33,176 INFO L134 CoverageAnalysis]: Checked inductivity of 13935 backedges. 6782 proven. 234 refuted. 0 times theorem prover too weak. 6919 trivial. 0 not checked. [2018-02-02 19:08:33,177 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:33,177 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:33,182 INFO L109 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-02 19:08:33,254 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-02-02 19:08:33,254 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:33,259 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:33,511 INFO L134 CoverageAnalysis]: Checked inductivity of 13935 backedges. 6782 proven. 234 refuted. 0 times theorem prover too weak. 6919 trivial. 0 not checked. [2018-02-02 19:08:33,530 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:33,530 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 32 [2018-02-02 19:08:33,531 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-02-02 19:08:33,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-02-02 19:08:33,531 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=741, Unknown=0, NotChecked=0, Total=992 [2018-02-02 19:08:33,532 INFO L87 Difference]: Start difference. First operand 530 states and 536 transitions. Second operand 32 states. [2018-02-02 19:08:33,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:33,875 INFO L93 Difference]: Finished difference Result 542 states and 546 transitions. [2018-02-02 19:08:33,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-02-02 19:08:33,875 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 508 [2018-02-02 19:08:33,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:33,877 INFO L225 Difference]: With dead ends: 542 [2018-02-02 19:08:33,877 INFO L226 Difference]: Without dead ends: 536 [2018-02-02 19:08:33,877 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=375, Invalid=1185, Unknown=0, NotChecked=0, Total=1560 [2018-02-02 19:08:33,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2018-02-02 19:08:33,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 530. [2018-02-02 19:08:33,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-02-02 19:08:33,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 534 transitions. [2018-02-02 19:08:33,881 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 534 transitions. Word has length 508 [2018-02-02 19:08:33,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:33,881 INFO L432 AbstractCegarLoop]: Abstraction has 530 states and 534 transitions. [2018-02-02 19:08:33,881 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-02-02 19:08:33,881 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 534 transitions. [2018-02-02 19:08:33,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2018-02-02 19:08:33,883 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:33,883 INFO L351 BasicCegarLoop]: trace histogram [75, 66, 65, 65, 65, 65, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:33,883 INFO L371 AbstractCegarLoop]: === Iteration 32 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:33,883 INFO L82 PathProgramCache]: Analyzing trace with hash -387441200, now seen corresponding path program 23 times [2018-02-02 19:08:33,883 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:33,883 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:33,884 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:33,884 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:33,884 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:33,903 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 14340 backedges. 4282 proven. 284 refuted. 0 times theorem prover too weak. 9774 trivial. 0 not checked. [2018-02-02 19:08:34,622 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:34,622 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:34,628 INFO L109 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-02 19:08:34,815 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-02-02 19:08:34,815 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:34,821 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:35,309 INFO L134 CoverageAnalysis]: Checked inductivity of 14340 backedges. 4217 proven. 1477 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2018-02-02 19:08:35,340 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:35,340 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 30] total 43 [2018-02-02 19:08:35,341 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-02-02 19:08:35,341 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-02-02 19:08:35,341 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1449, Unknown=0, NotChecked=0, Total=1806 [2018-02-02 19:08:35,341 INFO L87 Difference]: Start difference. First operand 530 states and 534 transitions. Second operand 43 states. [2018-02-02 19:08:36,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:36,162 INFO L93 Difference]: Finished difference Result 619 states and 624 transitions. [2018-02-02 19:08:36,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-02-02 19:08:36,163 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 514 [2018-02-02 19:08:36,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:36,165 INFO L225 Difference]: With dead ends: 619 [2018-02-02 19:08:36,165 INFO L226 Difference]: Without dead ends: 619 [2018-02-02 19:08:36,167 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=933, Invalid=3489, Unknown=0, NotChecked=0, Total=4422 [2018-02-02 19:08:36,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2018-02-02 19:08:36,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 608. [2018-02-02 19:08:36,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2018-02-02 19:08:36,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 613 transitions. [2018-02-02 19:08:36,175 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 613 transitions. Word has length 514 [2018-02-02 19:08:36,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:36,176 INFO L432 AbstractCegarLoop]: Abstraction has 608 states and 613 transitions. [2018-02-02 19:08:36,176 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-02-02 19:08:36,176 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 613 transitions. [2018-02-02 19:08:36,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2018-02-02 19:08:36,180 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:36,180 INFO L351 BasicCegarLoop]: trace histogram [86, 76, 75, 75, 75, 75, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:36,180 INFO L371 AbstractCegarLoop]: === Iteration 33 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:36,180 INFO L82 PathProgramCache]: Analyzing trace with hash 595794463, now seen corresponding path program 24 times [2018-02-02 19:08:36,181 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:36,181 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:36,181 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:36,182 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:36,182 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:36,219 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:37,071 INFO L134 CoverageAnalysis]: Checked inductivity of 18985 backedges. 8549 proven. 290 refuted. 0 times theorem prover too weak. 10146 trivial. 0 not checked. [2018-02-02 19:08:37,071 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:37,071 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:37,105 INFO L109 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-02 19:08:37,311 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-02-02 19:08:37,311 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:37,316 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 18985 backedges. 4718 proven. 321 refuted. 0 times theorem prover too weak. 13946 trivial. 0 not checked. [2018-02-02 19:08:37,612 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:37,612 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17] total 40 [2018-02-02 19:08:37,613 INFO L409 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-02-02 19:08:37,613 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-02-02 19:08:37,613 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1324, Unknown=0, NotChecked=0, Total=1560 [2018-02-02 19:08:37,613 INFO L87 Difference]: Start difference. First operand 608 states and 613 transitions. Second operand 40 states. [2018-02-02 19:08:38,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:38,596 INFO L93 Difference]: Finished difference Result 710 states and 714 transitions. [2018-02-02 19:08:38,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-02-02 19:08:38,596 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 586 [2018-02-02 19:08:38,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:38,598 INFO L225 Difference]: With dead ends: 710 [2018-02-02 19:08:38,598 INFO L226 Difference]: Without dead ends: 701 [2018-02-02 19:08:38,600 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2481 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1403, Invalid=7339, Unknown=0, NotChecked=0, Total=8742 [2018-02-02 19:08:38,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2018-02-02 19:08:38,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 686. [2018-02-02 19:08:38,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-02-02 19:08:38,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 690 transitions. [2018-02-02 19:08:38,608 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 690 transitions. Word has length 586 [2018-02-02 19:08:38,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:38,608 INFO L432 AbstractCegarLoop]: Abstraction has 686 states and 690 transitions. [2018-02-02 19:08:38,608 INFO L433 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-02-02 19:08:38,608 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 690 transitions. [2018-02-02 19:08:38,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2018-02-02 19:08:38,613 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:38,613 INFO L351 BasicCegarLoop]: trace histogram [99, 88, 87, 87, 87, 87, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:38,614 INFO L371 AbstractCegarLoop]: === Iteration 34 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:38,614 INFO L82 PathProgramCache]: Analyzing trace with hash 369724190, now seen corresponding path program 25 times [2018-02-02 19:08:38,614 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:38,614 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:38,615 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:38,615 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:38,615 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:38,653 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:39,664 INFO L134 CoverageAnalysis]: Checked inductivity of 25358 backedges. 10583 proven. 352 refuted. 0 times theorem prover too weak. 14423 trivial. 0 not checked. [2018-02-02 19:08:39,664 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:39,664 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:39,669 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:39,766 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:40,025 INFO L134 CoverageAnalysis]: Checked inductivity of 25358 backedges. 10583 proven. 352 refuted. 0 times theorem prover too weak. 14423 trivial. 0 not checked. [2018-02-02 19:08:40,044 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:40,044 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 38 [2018-02-02 19:08:40,045 INFO L409 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-02-02 19:08:40,045 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-02-02 19:08:40,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1057, Unknown=0, NotChecked=0, Total=1406 [2018-02-02 19:08:40,045 INFO L87 Difference]: Start difference. First operand 686 states and 690 transitions. Second operand 38 states. [2018-02-02 19:08:40,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:40,572 INFO L93 Difference]: Finished difference Result 718 states and 722 transitions. [2018-02-02 19:08:40,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-02-02 19:08:40,573 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 670 [2018-02-02 19:08:40,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:40,574 INFO L225 Difference]: With dead ends: 718 [2018-02-02 19:08:40,574 INFO L226 Difference]: Without dead ends: 712 [2018-02-02 19:08:40,575 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 705 GetRequests, 659 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=534, Invalid=1722, Unknown=0, NotChecked=0, Total=2256 [2018-02-02 19:08:40,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2018-02-02 19:08:40,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 697. [2018-02-02 19:08:40,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2018-02-02 19:08:40,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 701 transitions. [2018-02-02 19:08:40,581 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 701 transitions. Word has length 670 [2018-02-02 19:08:40,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:40,582 INFO L432 AbstractCegarLoop]: Abstraction has 697 states and 701 transitions. [2018-02-02 19:08:40,582 INFO L433 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-02-02 19:08:40,582 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 701 transitions. [2018-02-02 19:08:40,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2018-02-02 19:08:40,587 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:40,587 INFO L351 BasicCegarLoop]: trace histogram [100, 89, 88, 88, 88, 88, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:40,587 INFO L371 AbstractCegarLoop]: === Iteration 35 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:40,588 INFO L82 PathProgramCache]: Analyzing trace with hash 519412310, now seen corresponding path program 26 times [2018-02-02 19:08:40,588 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:40,588 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:40,588 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:40,588 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:40,589 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:40,631 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 25905 backedges. 5577 proven. 363 refuted. 0 times theorem prover too weak. 19965 trivial. 0 not checked. [2018-02-02 19:08:41,219 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:41,219 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 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:41,224 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 19:08:41,312 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-02 19:08:41,312 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:41,317 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:41,742 INFO L134 CoverageAnalysis]: Checked inductivity of 25905 backedges. 5577 proven. 363 refuted. 0 times theorem prover too weak. 19965 trivial. 0 not checked. [2018-02-02 19:08:41,761 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:41,761 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2018-02-02 19:08:41,762 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-02-02 19:08:41,762 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-02-02 19:08:41,762 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2018-02-02 19:08:41,762 INFO L87 Difference]: Start difference. First operand 697 states and 701 transitions. Second operand 26 states. [2018-02-02 19:08:41,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:41,973 INFO L93 Difference]: Finished difference Result 711 states and 715 transitions. [2018-02-02 19:08:41,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-02-02 19:08:41,973 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 676 [2018-02-02 19:08:41,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:41,974 INFO L225 Difference]: With dead ends: 711 [2018-02-02 19:08:41,974 INFO L226 Difference]: Without dead ends: 711 [2018-02-02 19:08:41,975 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 664 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2018-02-02 19:08:41,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2018-02-02 19:08:41,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 698. [2018-02-02 19:08:41,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2018-02-02 19:08:41,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 702 transitions. [2018-02-02 19:08:41,980 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 702 transitions. Word has length 676 [2018-02-02 19:08:41,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:41,980 INFO L432 AbstractCegarLoop]: Abstraction has 698 states and 702 transitions. [2018-02-02 19:08:41,980 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-02-02 19:08:41,980 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 702 transitions. [2018-02-02 19:08:41,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2018-02-02 19:08:41,983 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:41,983 INFO L351 BasicCegarLoop]: trace histogram [101, 90, 89, 89, 89, 89, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:41,983 INFO L371 AbstractCegarLoop]: === Iteration 36 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:41,983 INFO L82 PathProgramCache]: Analyzing trace with hash -436969394, now seen corresponding path program 27 times [2018-02-02 19:08:41,983 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:41,983 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:41,984 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:41,984 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:41,984 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:42,010 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 26458 backedges. 6061 proven. 432 refuted. 0 times theorem prover too weak. 19965 trivial. 0 not checked. [2018-02-02 19:08:42,483 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:42,483 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:42,488 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-02 19:08:42,654 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2018-02-02 19:08:42,654 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:42,659 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:42,811 INFO L134 CoverageAnalysis]: Checked inductivity of 26458 backedges. 6061 proven. 432 refuted. 0 times theorem prover too weak. 19965 trivial. 0 not checked. [2018-02-02 19:08:42,832 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:42,832 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 21 [2018-02-02 19:08:42,832 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-02-02 19:08:42,833 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-02-02 19:08:42,833 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2018-02-02 19:08:42,833 INFO L87 Difference]: Start difference. First operand 698 states and 702 transitions. Second operand 22 states. [2018-02-02 19:08:43,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:43,021 INFO L93 Difference]: Finished difference Result 729 states and 735 transitions. [2018-02-02 19:08:43,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-02-02 19:08:43,021 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 682 [2018-02-02 19:08:43,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:43,022 INFO L225 Difference]: With dead ends: 729 [2018-02-02 19:08:43,023 INFO L226 Difference]: Without dead ends: 729 [2018-02-02 19:08:43,023 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 676 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=321, Invalid=735, Unknown=0, NotChecked=0, Total=1056 [2018-02-02 19:08:43,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2018-02-02 19:08:43,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 704. [2018-02-02 19:08:43,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2018-02-02 19:08:43,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 709 transitions. [2018-02-02 19:08:43,030 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 709 transitions. Word has length 682 [2018-02-02 19:08:43,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:43,031 INFO L432 AbstractCegarLoop]: Abstraction has 704 states and 709 transitions. [2018-02-02 19:08:43,031 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-02-02 19:08:43,031 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 709 transitions. [2018-02-02 19:08:43,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2018-02-02 19:08:43,036 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:43,036 INFO L351 BasicCegarLoop]: trace histogram [102, 91, 90, 90, 90, 90, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:43,036 INFO L371 AbstractCegarLoop]: === Iteration 37 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:43,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1628752966, now seen corresponding path program 28 times [2018-02-02 19:08:43,037 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:43,037 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:43,038 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:43,038 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:43,038 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:43,073 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 27017 backedges. 7025 proven. 412 refuted. 0 times theorem prover too weak. 19580 trivial. 0 not checked. [2018-02-02 19:08:44,194 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:44,194 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:44,199 INFO L109 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-02 19:08:44,274 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-02-02 19:08:44,274 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:44,279 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:44,639 INFO L134 CoverageAnalysis]: Checked inductivity of 27017 backedges. 7063 proven. 374 refuted. 0 times theorem prover too weak. 19580 trivial. 0 not checked. [2018-02-02 19:08:44,660 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:44,661 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 45 [2018-02-02 19:08:44,661 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-02-02 19:08:44,661 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-02-02 19:08:44,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=1514, Unknown=0, NotChecked=0, Total=1980 [2018-02-02 19:08:44,662 INFO L87 Difference]: Start difference. First operand 704 states and 709 transitions. Second operand 45 states. [2018-02-02 19:08:45,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:45,371 INFO L93 Difference]: Finished difference Result 814 states and 820 transitions. [2018-02-02 19:08:45,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-02-02 19:08:45,371 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 688 [2018-02-02 19:08:45,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:45,372 INFO L225 Difference]: With dead ends: 814 [2018-02-02 19:08:45,372 INFO L226 Difference]: Without dead ends: 814 [2018-02-02 19:08:45,373 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1263, Invalid=3567, Unknown=0, NotChecked=0, Total=4830 [2018-02-02 19:08:45,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2018-02-02 19:08:45,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 800. [2018-02-02 19:08:45,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 800 states. [2018-02-02 19:08:45,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 806 transitions. [2018-02-02 19:08:45,378 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 806 transitions. Word has length 688 [2018-02-02 19:08:45,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:45,379 INFO L432 AbstractCegarLoop]: Abstraction has 800 states and 806 transitions. [2018-02-02 19:08:45,379 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-02-02 19:08:45,379 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 806 transitions. [2018-02-02 19:08:45,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2018-02-02 19:08:45,383 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:45,383 INFO L351 BasicCegarLoop]: trace histogram [115, 103, 102, 102, 102, 102, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:45,383 INFO L371 AbstractCegarLoop]: === Iteration 38 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:45,383 INFO L82 PathProgramCache]: Analyzing trace with hash 47189509, now seen corresponding path program 29 times [2018-02-02 19:08:45,383 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:45,383 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:45,384 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:45,384 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:45,384 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:45,410 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:46,355 INFO L134 CoverageAnalysis]: Checked inductivity of 34536 backedges. 14018 proven. 420 refuted. 0 times theorem prover too weak. 20098 trivial. 0 not checked. [2018-02-02 19:08:46,355 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:46,355 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:46,361 INFO L109 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-02 19:08:46,680 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2018-02-02 19:08:46,680 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:46,688 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:47,106 INFO L134 CoverageAnalysis]: Checked inductivity of 34536 backedges. 13824 proven. 2224 refuted. 0 times theorem prover too weak. 18488 trivial. 0 not checked. [2018-02-02 19:08:47,125 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:47,125 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 32] total 46 [2018-02-02 19:08:47,126 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-02-02 19:08:47,126 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-02-02 19:08:47,126 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=1650, Unknown=0, NotChecked=0, Total=2070 [2018-02-02 19:08:47,126 INFO L87 Difference]: Start difference. First operand 800 states and 806 transitions. Second operand 46 states. [2018-02-02 19:08:47,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:47,924 INFO L93 Difference]: Finished difference Result 818 states and 822 transitions. [2018-02-02 19:08:47,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-02-02 19:08:47,924 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 772 [2018-02-02 19:08:47,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:47,926 INFO L225 Difference]: With dead ends: 818 [2018-02-02 19:08:47,926 INFO L226 Difference]: Without dead ends: 812 [2018-02-02 19:08:47,927 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 756 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1661 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1183, Invalid=4219, Unknown=0, NotChecked=0, Total=5402 [2018-02-02 19:08:47,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2018-02-02 19:08:47,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 800. [2018-02-02 19:08:47,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 800 states. [2018-02-02 19:08:47,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 804 transitions. [2018-02-02 19:08:47,931 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 804 transitions. Word has length 772 [2018-02-02 19:08:47,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:47,931 INFO L432 AbstractCegarLoop]: Abstraction has 800 states and 804 transitions. [2018-02-02 19:08:47,932 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-02-02 19:08:47,932 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 804 transitions. [2018-02-02 19:08:47,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2018-02-02 19:08:47,935 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:47,935 INFO L351 BasicCegarLoop]: trace histogram [116, 104, 103, 103, 103, 103, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:47,935 INFO L371 AbstractCegarLoop]: === Iteration 39 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:47,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1773325315, now seen corresponding path program 30 times [2018-02-02 19:08:47,935 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:47,935 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:47,936 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:47,936 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:47,936 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:47,976 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:48,569 INFO L134 CoverageAnalysis]: Checked inductivity of 35175 backedges. 7626 proven. 507 refuted. 0 times theorem prover too weak. 27042 trivial. 0 not checked. [2018-02-02 19:08:48,569 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:48,569 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:48,574 INFO L109 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-02 19:08:48,825 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-02-02 19:08:48,825 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:48,831 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 35175 backedges. 7700 proven. 457 refuted. 0 times theorem prover too weak. 27018 trivial. 0 not checked. [2018-02-02 19:08:49,117 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:49,128 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 33 [2018-02-02 19:08:49,128 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-02-02 19:08:49,129 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-02-02 19:08:49,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=896, Unknown=0, NotChecked=0, Total=1122 [2018-02-02 19:08:49,129 INFO L87 Difference]: Start difference. First operand 800 states and 804 transitions. Second operand 34 states. [2018-02-02 19:08:49,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:49,712 INFO L93 Difference]: Finished difference Result 922 states and 929 transitions. [2018-02-02 19:08:49,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-02-02 19:08:49,713 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 778 [2018-02-02 19:08:49,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:49,715 INFO L225 Difference]: With dead ends: 922 [2018-02-02 19:08:49,715 INFO L226 Difference]: Without dead ends: 922 [2018-02-02 19:08:49,715 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 821 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=812, Invalid=2970, Unknown=0, NotChecked=0, Total=3782 [2018-02-02 19:08:49,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2018-02-02 19:08:49,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 896. [2018-02-02 19:08:49,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2018-02-02 19:08:49,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 902 transitions. [2018-02-02 19:08:49,720 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 902 transitions. Word has length 778 [2018-02-02 19:08:49,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:49,721 INFO L432 AbstractCegarLoop]: Abstraction has 896 states and 902 transitions. [2018-02-02 19:08:49,721 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-02-02 19:08:49,721 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 902 transitions. [2018-02-02 19:08:49,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 875 [2018-02-02 19:08:49,725 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:49,725 INFO L351 BasicCegarLoop]: trace histogram [131, 118, 117, 117, 117, 117, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:49,725 INFO L371 AbstractCegarLoop]: === Iteration 40 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:49,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1027574676, now seen corresponding path program 31 times [2018-02-02 19:08:49,725 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:49,725 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:49,726 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:49,726 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:49,726 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:49,760 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:50,932 INFO L134 CoverageAnalysis]: Checked inductivity of 45136 backedges. 17456 proven. 494 refuted. 0 times theorem prover too weak. 27186 trivial. 0 not checked. [2018-02-02 19:08:50,932 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:50,932 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 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:50,937 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:51,052 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:51,410 INFO L134 CoverageAnalysis]: Checked inductivity of 45136 backedges. 17456 proven. 494 refuted. 0 times theorem prover too weak. 27186 trivial. 0 not checked. [2018-02-02 19:08:51,429 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:51,429 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 44 [2018-02-02 19:08:51,430 INFO L409 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-02-02 19:08:51,430 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-02-02 19:08:51,430 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1429, Unknown=0, NotChecked=0, Total=1892 [2018-02-02 19:08:51,430 INFO L87 Difference]: Start difference. First operand 896 states and 902 transitions. Second operand 44 states. [2018-02-02 19:08:51,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:51,889 INFO L93 Difference]: Finished difference Result 924 states and 929 transitions. [2018-02-02 19:08:51,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-02-02 19:08:51,889 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 874 [2018-02-02 19:08:51,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:51,891 INFO L225 Difference]: With dead ends: 924 [2018-02-02 19:08:51,891 INFO L226 Difference]: Without dead ends: 918 [2018-02-02 19:08:51,891 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 861 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=721, Invalid=2359, Unknown=0, NotChecked=0, Total=3080 [2018-02-02 19:08:51,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2018-02-02 19:08:51,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 902. [2018-02-02 19:08:51,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 902 states. [2018-02-02 19:08:51,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 907 transitions. [2018-02-02 19:08:51,897 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 907 transitions. Word has length 874 [2018-02-02 19:08:51,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:51,897 INFO L432 AbstractCegarLoop]: Abstraction has 902 states and 907 transitions. [2018-02-02 19:08:51,897 INFO L433 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-02-02 19:08:51,897 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 907 transitions. [2018-02-02 19:08:51,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2018-02-02 19:08:51,901 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:51,901 INFO L351 BasicCegarLoop]: trace histogram [132, 119, 118, 118, 118, 118, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:51,901 INFO L371 AbstractCegarLoop]: === Iteration 41 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:51,902 INFO L82 PathProgramCache]: Analyzing trace with hash -894009052, now seen corresponding path program 32 times [2018-02-02 19:08:51,902 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:51,902 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:51,902 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:51,902 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:08:51,902 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:51,938 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 45867 backedges. 9438 proven. 588 refuted. 0 times theorem prover too weak. 35841 trivial. 0 not checked. [2018-02-02 19:08:52,673 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:52,673 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 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:52,678 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 19:08:52,789 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-02 19:08:52,789 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:52,797 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:53,060 INFO L134 CoverageAnalysis]: Checked inductivity of 45867 backedges. 9438 proven. 588 refuted. 0 times theorem prover too weak. 35841 trivial. 0 not checked. [2018-02-02 19:08:53,079 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:53,079 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2018-02-02 19:08:53,080 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-02-02 19:08:53,080 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-02-02 19:08:53,080 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2018-02-02 19:08:53,080 INFO L87 Difference]: Start difference. First operand 902 states and 907 transitions. Second operand 32 states. [2018-02-02 19:08:53,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:53,452 INFO L93 Difference]: Finished difference Result 936 states and 943 transitions. [2018-02-02 19:08:53,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-02-02 19:08:53,453 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 880 [2018-02-02 19:08:53,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:53,454 INFO L225 Difference]: With dead ends: 936 [2018-02-02 19:08:53,454 INFO L226 Difference]: Without dead ends: 936 [2018-02-02 19:08:53,455 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 865 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2018-02-02 19:08:53,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2018-02-02 19:08:53,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 908. [2018-02-02 19:08:53,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 908 states. [2018-02-02 19:08:53,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 914 transitions. [2018-02-02 19:08:53,460 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 914 transitions. Word has length 880 [2018-02-02 19:08:53,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:53,460 INFO L432 AbstractCegarLoop]: Abstraction has 908 states and 914 transitions. [2018-02-02 19:08:53,460 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-02-02 19:08:53,461 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 914 transitions. [2018-02-02 19:08:53,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2018-02-02 19:08:53,464 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:53,465 INFO L351 BasicCegarLoop]: trace histogram [133, 120, 119, 119, 119, 119, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:53,465 INFO L371 AbstractCegarLoop]: === Iteration 42 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:53,465 INFO L82 PathProgramCache]: Analyzing trace with hash 741635228, now seen corresponding path program 33 times [2018-02-02 19:08:53,465 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:53,465 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:53,466 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:53,466 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:53,466 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:53,501 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:54,772 INFO L134 CoverageAnalysis]: Checked inductivity of 46604 backedges. 10732 proven. 564 refuted. 0 times theorem prover too weak. 35308 trivial. 0 not checked. [2018-02-02 19:08:54,772 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:54,772 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 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:54,781 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-02 19:08:54,967 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-02-02 19:08:54,967 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:54,974 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:55,454 INFO L134 CoverageAnalysis]: Checked inductivity of 46604 backedges. 13265 proven. 4191 refuted. 0 times theorem prover too weak. 29148 trivial. 0 not checked. [2018-02-02 19:08:55,472 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:55,472 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 24] total 50 [2018-02-02 19:08:55,473 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-02-02 19:08:55,473 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-02-02 19:08:55,473 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=2069, Unknown=0, NotChecked=0, Total=2450 [2018-02-02 19:08:55,473 INFO L87 Difference]: Start difference. First operand 908 states and 914 transitions. Second operand 50 states. [2018-02-02 19:08:56,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:56,493 INFO L93 Difference]: Finished difference Result 1027 states and 1034 transitions. [2018-02-02 19:08:56,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-02-02 19:08:56,493 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 886 [2018-02-02 19:08:56,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:56,495 INFO L225 Difference]: With dead ends: 1027 [2018-02-02 19:08:56,495 INFO L226 Difference]: Without dead ends: 1027 [2018-02-02 19:08:56,496 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 871 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1620, Invalid=6390, Unknown=0, NotChecked=0, Total=8010 [2018-02-02 19:08:56,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2018-02-02 19:08:56,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1016. [2018-02-02 19:08:56,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2018-02-02 19:08:56,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1023 transitions. [2018-02-02 19:08:56,501 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1023 transitions. Word has length 886 [2018-02-02 19:08:56,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:56,501 INFO L432 AbstractCegarLoop]: Abstraction has 1016 states and 1023 transitions. [2018-02-02 19:08:56,501 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-02-02 19:08:56,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1023 transitions. [2018-02-02 19:08:56,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2018-02-02 19:08:56,506 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:56,506 INFO L351 BasicCegarLoop]: trace histogram [148, 134, 133, 133, 133, 133, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:56,506 INFO L371 AbstractCegarLoop]: === Iteration 43 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:56,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1908977205, now seen corresponding path program 34 times [2018-02-02 19:08:56,506 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:56,506 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:56,507 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:56,507 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:56,507 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:56,541 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:08:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 57981 backedges. 21411 proven. 574 refuted. 0 times theorem prover too weak. 35996 trivial. 0 not checked. [2018-02-02 19:08:58,019 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:08:58,019 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 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:08:58,024 INFO L109 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-02 19:08:58,127 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-02-02 19:08:58,128 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:08:58,134 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:08:58,550 INFO L134 CoverageAnalysis]: Checked inductivity of 57981 backedges. 21411 proven. 574 refuted. 0 times theorem prover too weak. 35996 trivial. 0 not checked. [2018-02-02 19:08:58,567 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:08:58,567 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 47 [2018-02-02 19:08:58,568 INFO L409 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-02-02 19:08:58,568 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-02-02 19:08:58,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=1636, Unknown=0, NotChecked=0, Total=2162 [2018-02-02 19:08:58,568 INFO L87 Difference]: Start difference. First operand 1016 states and 1023 transitions. Second operand 47 states. [2018-02-02 19:08:59,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:08:59,030 INFO L93 Difference]: Finished difference Result 1037 states and 1042 transitions. [2018-02-02 19:08:59,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-02-02 19:08:59,030 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 982 [2018-02-02 19:08:59,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:08:59,032 INFO L225 Difference]: With dead ends: 1037 [2018-02-02 19:08:59,032 INFO L226 Difference]: Without dead ends: 1031 [2018-02-02 19:08:59,033 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 1026 GetRequests, 968 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=825, Invalid=2715, Unknown=0, NotChecked=0, Total=3540 [2018-02-02 19:08:59,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2018-02-02 19:08:59,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1016. [2018-02-02 19:08:59,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2018-02-02 19:08:59,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1021 transitions. [2018-02-02 19:08:59,039 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1021 transitions. Word has length 982 [2018-02-02 19:08:59,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:08:59,039 INFO L432 AbstractCegarLoop]: Abstraction has 1016 states and 1021 transitions. [2018-02-02 19:08:59,039 INFO L433 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-02-02 19:08:59,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1021 transitions. [2018-02-02 19:08:59,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2018-02-02 19:08:59,044 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:08:59,044 INFO L351 BasicCegarLoop]: trace histogram [149, 135, 134, 134, 134, 134, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:08:59,044 INFO L371 AbstractCegarLoop]: === Iteration 44 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:08:59,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1435708227, now seen corresponding path program 35 times [2018-02-02 19:08:59,044 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:08:59,045 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:08:59,045 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:59,045 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:08:59,045 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:08:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:08:59,082 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:09:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 58810 backedges. 11515 proven. 675 refuted. 0 times theorem prover too weak. 46620 trivial. 0 not checked. [2018-02-02 19:09:00,023 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:09:00,024 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 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:09:00,029 INFO L109 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-02 19:09:00,564 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-02-02 19:09:00,564 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:09:00,573 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:09:00,917 INFO L134 CoverageAnalysis]: Checked inductivity of 58810 backedges. 11515 proven. 675 refuted. 0 times theorem prover too weak. 46620 trivial. 0 not checked. [2018-02-02 19:09:00,937 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:09:00,937 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2018-02-02 19:09:00,938 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-02-02 19:09:00,938 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-02-02 19:09:00,938 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-02-02 19:09:00,938 INFO L87 Difference]: Start difference. First operand 1016 states and 1021 transitions. Second operand 34 states. [2018-02-02 19:09:01,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:09:01,367 INFO L93 Difference]: Finished difference Result 1040 states and 1046 transitions. [2018-02-02 19:09:01,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-02-02 19:09:01,367 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 988 [2018-02-02 19:09:01,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:09:01,369 INFO L225 Difference]: With dead ends: 1040 [2018-02-02 19:09:01,369 INFO L226 Difference]: Without dead ends: 1040 [2018-02-02 19:09:01,369 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 1019 GetRequests, 973 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=507, Invalid=1749, Unknown=0, NotChecked=0, Total=2256 [2018-02-02 19:09:01,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2018-02-02 19:09:01,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 1022. [2018-02-02 19:09:01,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1022 states. [2018-02-02 19:09:01,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1028 transitions. [2018-02-02 19:09:01,374 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1028 transitions. Word has length 988 [2018-02-02 19:09:01,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:09:01,375 INFO L432 AbstractCegarLoop]: Abstraction has 1022 states and 1028 transitions. [2018-02-02 19:09:01,375 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-02-02 19:09:01,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1028 transitions. [2018-02-02 19:09:01,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2018-02-02 19:09:01,379 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:09:01,379 INFO L351 BasicCegarLoop]: trace histogram [150, 136, 135, 135, 135, 135, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:09:01,379 INFO L371 AbstractCegarLoop]: === Iteration 45 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:09:01,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1833618299, now seen corresponding path program 36 times [2018-02-02 19:09:01,380 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:09:01,380 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:09:01,380 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:01,380 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:09:01,380 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:01,416 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:09:03,117 INFO L134 CoverageAnalysis]: Checked inductivity of 59645 backedges. 12992 proven. 649 refuted. 0 times theorem prover too weak. 46004 trivial. 0 not checked. [2018-02-02 19:09:03,117 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:09:03,117 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 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:09:03,123 INFO L109 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-02 19:09:03,510 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2018-02-02 19:09:03,510 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:09:03,521 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:09:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 59645 backedges. 12348 proven. 618 refuted. 0 times theorem prover too weak. 46679 trivial. 0 not checked. [2018-02-02 19:09:03,849 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:09:03,849 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 21] total 40 [2018-02-02 19:09:03,850 INFO L409 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-02-02 19:09:03,850 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-02-02 19:09:03,850 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=1221, Unknown=0, NotChecked=0, Total=1560 [2018-02-02 19:09:03,850 INFO L87 Difference]: Start difference. First operand 1022 states and 1028 transitions. Second operand 40 states. [2018-02-02 19:09:04,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:09:04,489 INFO L93 Difference]: Finished difference Result 1132 states and 1139 transitions. [2018-02-02 19:09:04,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-02-02 19:09:04,489 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 994 [2018-02-02 19:09:04,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:09:04,491 INFO L225 Difference]: With dead ends: 1132 [2018-02-02 19:09:04,491 INFO L226 Difference]: Without dead ends: 1132 [2018-02-02 19:09:04,491 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 1061 GetRequests, 991 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1209, Invalid=3903, Unknown=0, NotChecked=0, Total=5112 [2018-02-02 19:09:04,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2018-02-02 19:09:04,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1130. [2018-02-02 19:09:04,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1130 states. [2018-02-02 19:09:04,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1137 transitions. [2018-02-02 19:09:04,498 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1137 transitions. Word has length 994 [2018-02-02 19:09:04,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:09:04,498 INFO L432 AbstractCegarLoop]: Abstraction has 1130 states and 1137 transitions. [2018-02-02 19:09:04,498 INFO L433 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-02-02 19:09:04,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1137 transitions. [2018-02-02 19:09:04,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1097 [2018-02-02 19:09:04,505 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:09:04,505 INFO L351 BasicCegarLoop]: trace histogram [166, 151, 150, 150, 150, 150, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:09:04,505 INFO L371 AbstractCegarLoop]: === Iteration 46 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:09:04,505 INFO L82 PathProgramCache]: Analyzing trace with hash 305834914, now seen corresponding path program 37 times [2018-02-02 19:09:04,505 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:09:04,506 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:09:04,506 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:04,506 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:09:04,506 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:04,542 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:09:06,475 INFO L134 CoverageAnalysis]: Checked inductivity of 73365 backedges. 25919 proven. 660 refuted. 0 times theorem prover too weak. 46786 trivial. 0 not checked. [2018-02-02 19:09:06,475 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:09:06,475 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 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:09:06,481 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:09:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:06,633 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:09:07,178 INFO L134 CoverageAnalysis]: Checked inductivity of 73365 backedges. 25919 proven. 660 refuted. 0 times theorem prover too weak. 46786 trivial. 0 not checked. [2018-02-02 19:09:07,196 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:09:07,197 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 50 [2018-02-02 19:09:07,197 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-02-02 19:09:07,197 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-02-02 19:09:07,198 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=593, Invalid=1857, Unknown=0, NotChecked=0, Total=2450 [2018-02-02 19:09:07,198 INFO L87 Difference]: Start difference. First operand 1130 states and 1137 transitions. Second operand 50 states. [2018-02-02 19:09:07,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:09:07,750 INFO L93 Difference]: Finished difference Result 1151 states and 1156 transitions. [2018-02-02 19:09:07,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-02-02 19:09:07,750 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 1096 [2018-02-02 19:09:07,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:09:07,752 INFO L225 Difference]: With dead ends: 1151 [2018-02-02 19:09:07,753 INFO L226 Difference]: Without dead ends: 1145 [2018-02-02 19:09:07,753 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 1143 GetRequests, 1081 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1345 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=936, Invalid=3096, Unknown=0, NotChecked=0, Total=4032 [2018-02-02 19:09:07,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2018-02-02 19:09:07,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1130. [2018-02-02 19:09:07,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1130 states. [2018-02-02 19:09:07,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1135 transitions. [2018-02-02 19:09:07,759 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1135 transitions. Word has length 1096 [2018-02-02 19:09:07,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:09:07,759 INFO L432 AbstractCegarLoop]: Abstraction has 1130 states and 1135 transitions. [2018-02-02 19:09:07,759 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-02-02 19:09:07,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1135 transitions. [2018-02-02 19:09:07,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1103 [2018-02-02 19:09:07,765 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:09:07,765 INFO L351 BasicCegarLoop]: trace histogram [167, 152, 151, 151, 151, 151, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:09:07,765 INFO L371 AbstractCegarLoop]: === Iteration 47 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:09:07,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1521424346, now seen corresponding path program 38 times [2018-02-02 19:09:07,765 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:09:07,765 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:09:07,766 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:07,766 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:09:07,766 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:07,824 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:09:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 74298 backedges. 13875 proven. 768 refuted. 0 times theorem prover too weak. 59655 trivial. 0 not checked. [2018-02-02 19:09:09,108 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:09:09,108 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 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:09:09,113 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 19:09:09,254 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-02 19:09:09,254 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:09:09,262 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:09:09,573 INFO L134 CoverageAnalysis]: Checked inductivity of 74298 backedges. 13875 proven. 768 refuted. 0 times theorem prover too weak. 59655 trivial. 0 not checked. [2018-02-02 19:09:09,591 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:09:09,591 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-02-02 19:09:09,591 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-02-02 19:09:09,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-02-02 19:09:09,592 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-02-02 19:09:09,592 INFO L87 Difference]: Start difference. First operand 1130 states and 1135 transitions. Second operand 19 states. [2018-02-02 19:09:10,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:09:10,084 INFO L93 Difference]: Finished difference Result 1154 states and 1160 transitions. [2018-02-02 19:09:10,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-02-02 19:09:10,085 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1102 [2018-02-02 19:09:10,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:09:10,087 INFO L225 Difference]: With dead ends: 1154 [2018-02-02 19:09:10,087 INFO L226 Difference]: Without dead ends: 1154 [2018-02-02 19:09:10,087 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 1120 GetRequests, 1100 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-02-02 19:09:10,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2018-02-02 19:09:10,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1136. [2018-02-02 19:09:10,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1136 states. [2018-02-02 19:09:10,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1142 transitions. [2018-02-02 19:09:10,093 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1142 transitions. Word has length 1102 [2018-02-02 19:09:10,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:09:10,094 INFO L432 AbstractCegarLoop]: Abstraction has 1136 states and 1142 transitions. [2018-02-02 19:09:10,094 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-02-02 19:09:10,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1142 transitions. [2018-02-02 19:09:10,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1109 [2018-02-02 19:09:10,099 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:09:10,100 INFO L351 BasicCegarLoop]: trace histogram [168, 153, 152, 152, 152, 152, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:09:10,100 INFO L371 AbstractCegarLoop]: === Iteration 48 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:09:10,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1687333586, now seen corresponding path program 39 times [2018-02-02 19:09:10,100 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:09:10,100 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:09:10,101 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:10,101 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:09:10,101 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:10,145 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:09:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 75237 backedges. 15547 proven. 740 refuted. 0 times theorem prover too weak. 58950 trivial. 0 not checked. [2018-02-02 19:09:12,235 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:09:12,235 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 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:09:12,240 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-02 19:09:12,505 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-02-02 19:09:12,505 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:09:12,512 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:09:13,224 INFO L134 CoverageAnalysis]: Checked inductivity of 75237 backedges. 21670 proven. 4847 refuted. 0 times theorem prover too weak. 48720 trivial. 0 not checked. [2018-02-02 19:09:13,244 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:09:13,245 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 26] total 57 [2018-02-02 19:09:13,245 INFO L409 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-02-02 19:09:13,245 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-02-02 19:09:13,246 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=2696, Unknown=0, NotChecked=0, Total=3192 [2018-02-02 19:09:13,246 INFO L87 Difference]: Start difference. First operand 1136 states and 1142 transitions. Second operand 57 states. [2018-02-02 19:09:14,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:09:14,563 INFO L93 Difference]: Finished difference Result 1255 states and 1261 transitions. [2018-02-02 19:09:14,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-02-02 19:09:14,563 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 1108 [2018-02-02 19:09:14,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:09:14,565 INFO L225 Difference]: With dead ends: 1255 [2018-02-02 19:09:14,565 INFO L226 Difference]: Without dead ends: 1255 [2018-02-02 19:09:14,566 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 1090 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2308 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2136, Invalid=8576, Unknown=0, NotChecked=0, Total=10712 [2018-02-02 19:09:14,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2018-02-02 19:09:14,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1244. [2018-02-02 19:09:14,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1244 states. [2018-02-02 19:09:14,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1250 transitions. [2018-02-02 19:09:14,572 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1250 transitions. Word has length 1108 [2018-02-02 19:09:14,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:09:14,572 INFO L432 AbstractCegarLoop]: Abstraction has 1244 states and 1250 transitions. [2018-02-02 19:09:14,572 INFO L433 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-02-02 19:09:14,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1250 transitions. [2018-02-02 19:09:14,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1217 [2018-02-02 19:09:14,578 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:09:14,579 INFO L351 BasicCegarLoop]: trace histogram [185, 169, 168, 168, 168, 168, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:09:14,579 INFO L371 AbstractCegarLoop]: === Iteration 49 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:09:14,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1655146865, now seen corresponding path program 40 times [2018-02-02 19:09:14,579 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:09:14,579 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:09:14,580 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:14,580 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:09:14,580 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:14,623 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:09:17,014 INFO L134 CoverageAnalysis]: Checked inductivity of 91600 backedges. 31016 proven. 752 refuted. 0 times theorem prover too weak. 59832 trivial. 0 not checked. [2018-02-02 19:09:17,014 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:09:17,014 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 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:09:17,019 INFO L109 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-02 19:09:17,157 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-02-02 19:09:17,157 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:09:17,165 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:09:17,776 INFO L134 CoverageAnalysis]: Checked inductivity of 91600 backedges. 31016 proven. 752 refuted. 0 times theorem prover too weak. 59832 trivial. 0 not checked. [2018-02-02 19:09:17,795 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:09:17,795 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 53 [2018-02-02 19:09:17,796 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-02-02 19:09:17,796 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-02-02 19:09:17,796 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=664, Invalid=2092, Unknown=0, NotChecked=0, Total=2756 [2018-02-02 19:09:17,796 INFO L87 Difference]: Start difference. First operand 1244 states and 1250 transitions. Second operand 53 states. [2018-02-02 19:09:18,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:09:18,449 INFO L93 Difference]: Finished difference Result 1262 states and 1266 transitions. [2018-02-02 19:09:18,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-02-02 19:09:18,450 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 1216 [2018-02-02 19:09:18,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:09:18,452 INFO L225 Difference]: With dead ends: 1262 [2018-02-02 19:09:18,452 INFO L226 Difference]: Without dead ends: 1256 [2018-02-02 19:09:18,452 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 1266 GetRequests, 1200 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1531 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1054, Invalid=3502, Unknown=0, NotChecked=0, Total=4556 [2018-02-02 19:09:18,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2018-02-02 19:09:18,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1244. [2018-02-02 19:09:18,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1244 states. [2018-02-02 19:09:18,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1248 transitions. [2018-02-02 19:09:18,458 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1248 transitions. Word has length 1216 [2018-02-02 19:09:18,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:09:18,458 INFO L432 AbstractCegarLoop]: Abstraction has 1244 states and 1248 transitions. [2018-02-02 19:09:18,458 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-02-02 19:09:18,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1248 transitions. [2018-02-02 19:09:18,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1223 [2018-02-02 19:09:18,465 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:09:18,465 INFO L351 BasicCegarLoop]: trace histogram [186, 170, 169, 169, 169, 169, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:09:18,465 INFO L371 AbstractCegarLoop]: === Iteration 50 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:09:18,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1276924311, now seen corresponding path program 41 times [2018-02-02 19:09:18,465 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:09:18,465 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:09:18,466 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:18,466 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:09:18,466 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:18,510 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:09:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 92643 backedges. 16536 proven. 867 refuted. 0 times theorem prover too weak. 75240 trivial. 0 not checked. [2018-02-02 19:09:19,966 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:09:19,966 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 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:09:19,971 INFO L109 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-02 19:09:20,823 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2018-02-02 19:09:20,823 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:09:20,835 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:09:21,279 INFO L134 CoverageAnalysis]: Checked inductivity of 92643 backedges. 16536 proven. 867 refuted. 0 times theorem prover too weak. 75240 trivial. 0 not checked. [2018-02-02 19:09:21,300 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:09:21,300 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 32 [2018-02-02 19:09:21,300 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-02-02 19:09:21,301 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-02-02 19:09:21,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=762, Unknown=0, NotChecked=0, Total=1056 [2018-02-02 19:09:21,301 INFO L87 Difference]: Start difference. First operand 1244 states and 1248 transitions. Second operand 33 states. [2018-02-02 19:09:21,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:09:21,671 INFO L93 Difference]: Finished difference Result 1265 states and 1270 transitions. [2018-02-02 19:09:21,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-02-02 19:09:21,671 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 1222 [2018-02-02 19:09:21,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:09:21,673 INFO L225 Difference]: With dead ends: 1265 [2018-02-02 19:09:21,673 INFO L226 Difference]: Without dead ends: 1265 [2018-02-02 19:09:21,674 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 1257 GetRequests, 1210 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=601, Invalid=1751, Unknown=0, NotChecked=0, Total=2352 [2018-02-02 19:09:21,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2018-02-02 19:09:21,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1250. [2018-02-02 19:09:21,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1250 states. [2018-02-02 19:09:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1255 transitions. [2018-02-02 19:09:21,680 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1255 transitions. Word has length 1222 [2018-02-02 19:09:21,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:09:21,681 INFO L432 AbstractCegarLoop]: Abstraction has 1250 states and 1255 transitions. [2018-02-02 19:09:21,681 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-02-02 19:09:21,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1255 transitions. [2018-02-02 19:09:21,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1229 [2018-02-02 19:09:21,688 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:09:21,688 INFO L351 BasicCegarLoop]: trace histogram [187, 171, 170, 170, 170, 170, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:09:21,688 INFO L371 AbstractCegarLoop]: === Iteration 51 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:09:21,688 INFO L82 PathProgramCache]: Analyzing trace with hash 2048514593, now seen corresponding path program 42 times [2018-02-02 19:09:21,688 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:09:21,688 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:09:21,689 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:21,689 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:09:21,689 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:21,737 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:09:24,308 INFO L134 CoverageAnalysis]: Checked inductivity of 93692 backedges. 18415 proven. 837 refuted. 0 times theorem prover too weak. 74440 trivial. 0 not checked. [2018-02-02 19:09:24,308 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:09:24,308 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 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:09:24,323 INFO L109 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-02 19:09:25,110 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-02-02 19:09:25,110 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:09:25,121 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:09:25,528 INFO L134 CoverageAnalysis]: Checked inductivity of 93692 backedges. 17583 proven. 802 refuted. 0 times theorem prover too weak. 75307 trivial. 0 not checked. [2018-02-02 19:09:25,549 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:09:25,550 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 23] total 44 [2018-02-02 19:09:25,550 INFO L409 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-02-02 19:09:25,550 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-02-02 19:09:25,551 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=1477, Unknown=0, NotChecked=0, Total=1892 [2018-02-02 19:09:25,551 INFO L87 Difference]: Start difference. First operand 1250 states and 1255 transitions. Second operand 44 states. [2018-02-02 19:09:26,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:09:26,625 INFO L93 Difference]: Finished difference Result 1372 states and 1378 transitions. [2018-02-02 19:09:26,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-02-02 19:09:26,625 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 1228 [2018-02-02 19:09:26,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:09:26,628 INFO L225 Difference]: With dead ends: 1372 [2018-02-02 19:09:26,628 INFO L226 Difference]: Without dead ends: 1372 [2018-02-02 19:09:26,628 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 1303 GetRequests, 1225 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1484, Invalid=4836, Unknown=0, NotChecked=0, Total=6320 [2018-02-02 19:09:26,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2018-02-02 19:09:26,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1370. [2018-02-02 19:09:26,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1370 states. [2018-02-02 19:09:26,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1376 transitions. [2018-02-02 19:09:26,635 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1376 transitions. Word has length 1228 [2018-02-02 19:09:26,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:09:26,636 INFO L432 AbstractCegarLoop]: Abstraction has 1370 states and 1376 transitions. [2018-02-02 19:09:26,636 INFO L433 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-02-02 19:09:26,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1376 transitions. [2018-02-02 19:09:26,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1343 [2018-02-02 19:09:26,644 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:09:26,644 INFO L351 BasicCegarLoop]: trace histogram [205, 188, 187, 187, 187, 187, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:09:26,644 INFO L371 AbstractCegarLoop]: === Iteration 52 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:09:26,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1362556088, now seen corresponding path program 43 times [2018-02-02 19:09:26,645 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:09:26,645 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:09:26,645 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:26,645 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 19:09:26,645 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:26,695 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:09:29,751 INFO L134 CoverageAnalysis]: Checked inductivity of 113016 backedges. 36738 proven. 850 refuted. 0 times theorem prover too weak. 75428 trivial. 0 not checked. [2018-02-02 19:09:29,752 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:09:29,752 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 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:09:29,757 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:09:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:29,937 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:09:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 113016 backedges. 36738 proven. 850 refuted. 0 times theorem prover too weak. 75428 trivial. 0 not checked. [2018-02-02 19:09:30,694 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 19:09:30,694 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 56 [2018-02-02 19:09:30,695 INFO L409 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-02-02 19:09:30,695 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-02-02 19:09:30,696 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=739, Invalid=2341, Unknown=0, NotChecked=0, Total=3080 [2018-02-02 19:09:30,696 INFO L87 Difference]: Start difference. First operand 1370 states and 1376 transitions. Second operand 56 states. [2018-02-02 19:09:31,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:09:31,300 INFO L93 Difference]: Finished difference Result 1388 states and 1392 transitions. [2018-02-02 19:09:31,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-02-02 19:09:31,300 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 1342 [2018-02-02 19:09:31,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:09:31,303 INFO L225 Difference]: With dead ends: 1388 [2018-02-02 19:09:31,303 INFO L226 Difference]: Without dead ends: 1382 [2018-02-02 19:09:31,304 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 1395 GetRequests, 1325 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1179, Invalid=3933, Unknown=0, NotChecked=0, Total=5112 [2018-02-02 19:09:31,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2018-02-02 19:09:31,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1370. [2018-02-02 19:09:31,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1370 states. [2018-02-02 19:09:31,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1374 transitions. [2018-02-02 19:09:31,315 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1374 transitions. Word has length 1342 [2018-02-02 19:09:31,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:09:31,316 INFO L432 AbstractCegarLoop]: Abstraction has 1370 states and 1374 transitions. [2018-02-02 19:09:31,316 INFO L433 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-02-02 19:09:31,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1374 transitions. [2018-02-02 19:09:31,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1349 [2018-02-02 19:09:31,329 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:09:31,330 INFO L351 BasicCegarLoop]: trace histogram [206, 189, 188, 188, 188, 188, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:09:31,330 INFO L371 AbstractCegarLoop]: === Iteration 53 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-02-02 19:09:31,330 INFO L82 PathProgramCache]: Analyzing trace with hash 811391088, now seen corresponding path program 44 times [2018-02-02 19:09:31,330 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:09:31,330 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:09:31,330 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:31,331 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:09:31,331 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:09:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:09:31,395 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. Received shutdown request... [2018-02-02 19:09:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 114175 backedges. 19516 proven. 972 refuted. 0 times theorem prover too weak. 93687 trivial. 0 not checked. [2018-02-02 19:09:33,267 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 19:09:33,267 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 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 19:09:33,281 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 19:09:33,441 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-02 19:09:33,441 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 19:09:33,451 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 19:09:33,461 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-02-02 19:09:33,462 WARN L491 AbstractCegarLoop]: Verification canceled [2018-02-02 19:09:33,465 WARN L185 ceAbstractionStarter]: Timeout [2018-02-02 19:09:33,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 07:09:33 BoogieIcfgContainer [2018-02-02 19:09:33,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 19:09:33,466 INFO L168 Benchmark]: Toolchain (without parser) took 76795.16 ms. Allocated memory was 401.1 MB in the beginning and 2.4 GB in the end (delta: 2.0 GB). Free memory was 359.0 MB in the beginning and 2.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 168.2 MB. Max. memory is 5.3 GB. [2018-02-02 19:09:33,466 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 401.1 MB. Free memory is still 364.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 19:09:33,467 INFO L168 Benchmark]: CACSL2BoogieTranslator took 124.70 ms. Allocated memory is still 401.1 MB. Free memory was 359.0 MB in the beginning and 351.0 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-02-02 19:09:33,469 INFO L168 Benchmark]: Boogie Preprocessor took 19.32 ms. Allocated memory is still 401.1 MB. Free memory was 351.0 MB in the beginning and 348.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-02 19:09:33,469 INFO L168 Benchmark]: RCFGBuilder took 166.88 ms. Allocated memory is still 401.1 MB. Free memory was 348.4 MB in the beginning and 332.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 5.3 GB. [2018-02-02 19:09:33,470 INFO L168 Benchmark]: TraceAbstraction took 76482.03 ms. Allocated memory was 401.1 MB in the beginning and 2.4 GB in the end (delta: 2.0 GB). Free memory was 331.0 MB in the beginning and 2.2 GB in the end (delta: -1.9 GB). Peak memory consumption was 140.1 MB. Max. memory is 5.3 GB. [2018-02-02 19:09:33,470 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 401.1 MB. Free memory is still 364.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 124.70 ms. Allocated memory is still 401.1 MB. Free memory was 359.0 MB in the beginning and 351.0 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 19.32 ms. Allocated memory is still 401.1 MB. Free memory was 351.0 MB in the beginning and 348.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 166.88 ms. Allocated memory is still 401.1 MB. Free memory was 348.4 MB in the beginning and 332.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 76482.03 ms. Allocated memory was 401.1 MB in the beginning and 2.4 GB in the end (delta: 2.0 GB). Free memory was 331.0 MB in the beginning and 2.2 GB in the end (delta: -1.9 GB). Peak memory consumption was 140.1 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 18). Cancelled while BasicCegarLoop was analyzing trace of length 1349 with TraceHistMax 206, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 22 known predicates. - TimeoutResultAtElement [Line: 18]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 18). Cancelled while BasicCegarLoop was analyzing trace of length 1349 with TraceHistMax 206, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 22 known predicates. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 18). Cancelled while BasicCegarLoop was analyzing trace of length 1349 with TraceHistMax 206, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 22 known predicates. - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 27). Cancelled while BasicCegarLoop was analyzing trace of length 1349 with TraceHistMax 206, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 22 known predicates. - TimeoutResultAtElement [Line: 23]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 23). Cancelled while BasicCegarLoop was analyzing trace of length 1349 with TraceHistMax 206, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 22 known predicates. - TimeoutResultAtElement [Line: 30]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 30). Cancelled while BasicCegarLoop was analyzing trace of length 1349 with TraceHistMax 206, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 22 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 6 error locations. TIMEOUT Result, 76.4s OverallTime, 53 OverallIterations, 206 TraceHistogramMax, 19.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1694 SDtfs, 10225 SDslu, 15002 SDs, 0 SdLazy, 37651 SolverSat, 1344 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26132 GetRequests, 24237 SyntacticMatches, 20 SemanticMatches, 1875 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26473 ImplicationChecksByTransitivity, 16.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1370occurred in iteration=51, 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: 0.3s AutomataMinimizationTime, 52 MinimizatonAttempts, 607 StatesRemovedByMinimization, 51 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.8s SsaConstructionTime, 6.9s SatisfiabilityAnalysisTime, 38.9s InterpolantComputationTime, 49348 NumberOfCodeBlocks, 46507 NumberOfCodeBlocksAsserted, 425 NumberOfCheckSat, 49249 ConstructedInterpolants, 0 QuantifiedInterpolants, 63819179 SizeOfPredicates, 95 NumberOfNonLiveVariables, 50487 ConjunctsInSsa, 912 ConjunctsInUnsatCore, 99 InterpolantComputations, 7 PerfectInterpolantSequences, 2394699/2433967 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_19-09-33-475.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_19-09-33-475.csv Completed graceful shutdown