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/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_false-valid-deref-read.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 12:16:00,469 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 12:16:00,471 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 12:16:00,486 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 12:16:00,486 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 12:16:00,487 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 12:16:00,488 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 12:16:00,490 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 12:16:00,492 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 12:16:00,493 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 12:16:00,494 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 12:16:00,494 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 12:16:00,495 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 12:16:00,496 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 12:16:00,497 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 12:16:00,499 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 12:16:00,502 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 12:16:00,504 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 12:16:00,505 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 12:16:00,506 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 12:16:00,509 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 12:16:00,509 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 12:16:00,509 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 12:16:00,510 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 12:16:00,511 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 12:16:00,512 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 12:16:00,512 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 12:16:00,513 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 12:16:00,513 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 12:16:00,513 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 12:16:00,514 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 12:16:00,514 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf [2018-01-24 12:16:00,522 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 12:16:00,523 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 12:16:00,523 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 12:16:00,524 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 12:16:00,524 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 12:16:00,524 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 12:16:00,524 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 12:16:00,524 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 12:16:00,524 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 12:16:00,525 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 12:16:00,525 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 12:16:00,525 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 12:16:00,525 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 12:16:00,525 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 12:16:00,525 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 12:16:00,525 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 12:16:00,525 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 12:16:00,526 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 12:16:00,526 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 12:16:00,526 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 12:16:00,526 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 12:16:00,526 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 12:16:00,526 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 12:16:00,527 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 12:16:00,527 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 12:16:00,527 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 12:16:00,527 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 12:16:00,527 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 12:16:00,527 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 12:16:00,528 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 12:16:00,528 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 12:16:00,528 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 12:16:00,528 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 12:16:00,529 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 12:16:00,561 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 12:16:00,571 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 12:16:00,575 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 12:16:00,576 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 12:16:00,576 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 12:16:00,577 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_false-valid-deref-read.c [2018-01-24 12:16:00,678 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 12:16:00,682 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 12:16:00,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 12:16:00,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 12:16:00,689 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 12:16:00,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 12:16:00" (1/1) ... [2018-01-24 12:16:00,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a5aa62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:00, skipping insertion in model container [2018-01-24 12:16:00,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 12:16:00" (1/1) ... [2018-01-24 12:16:00,706 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 12:16:00,719 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 12:16:00,829 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 12:16:00,845 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 12:16:00,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:00 WrapperNode [2018-01-24 12:16:00,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 12:16:00,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 12:16:00,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 12:16:00,852 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 12:16:00,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:00" (1/1) ... [2018-01-24 12:16:00,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:00" (1/1) ... [2018-01-24 12:16:00,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:00" (1/1) ... [2018-01-24 12:16:00,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:00" (1/1) ... [2018-01-24 12:16:00,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:00" (1/1) ... [2018-01-24 12:16:00,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:00" (1/1) ... [2018-01-24 12:16:00,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:00" (1/1) ... [2018-01-24 12:16:00,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 12:16:00,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 12:16:00,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 12:16:00,884 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 12:16:00,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:00" (1/1) ... No working directory specified, using /storage/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 [2018-01-24 12:16:00,929 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 12:16:00,930 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 12:16:00,930 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-24 12:16:00,930 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 12:16:00,930 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 12:16:00,930 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 12:16:00,930 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 12:16:00,930 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 12:16:00,930 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 12:16:00,931 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-24 12:16:00,931 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 12:16:00,931 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 12:16:00,931 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 12:16:01,095 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 12:16:01,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 12:16:01 BoogieIcfgContainer [2018-01-24 12:16:01,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 12:16:01,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 12:16:01,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 12:16:01,098 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 12:16:01,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 12:16:00" (1/3) ... [2018-01-24 12:16:01,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45504b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 12:16:01, skipping insertion in model container [2018-01-24 12:16:01,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:16:00" (2/3) ... [2018-01-24 12:16:01,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45504b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 12:16:01, skipping insertion in model container [2018-01-24 12:16:01,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 12:16:01" (3/3) ... [2018-01-24 12:16:01,101 INFO L105 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_false-valid-deref-read.c [2018-01-24 12:16:01,108 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 12:16:01,114 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-24 12:16:01,158 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 12:16:01,158 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 12:16:01,158 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 12:16:01,159 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 12:16:01,159 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 12:16:01,159 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 12:16:01,159 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 12:16:01,159 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 12:16:01,160 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 12:16:01,181 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-01-24 12:16:01,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-01-24 12:16:01,187 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:01,189 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:01,189 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:01,194 INFO L82 PathProgramCache]: Analyzing trace with hash -215054890, now seen corresponding path program 1 times [2018-01-24 12:16:01,196 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:01,197 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:01,250 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:01,250 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:01,250 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:01,294 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:01,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:01,380 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:16:01,380 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 12:16:01,382 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 12:16:01,393 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 12:16:01,393 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 12:16:01,395 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2018-01-24 12:16:01,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:01,484 INFO L93 Difference]: Finished difference Result 101 states and 123 transitions. [2018-01-24 12:16:01,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 12:16:01,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-01-24 12:16:01,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:01,493 INFO L225 Difference]: With dead ends: 101 [2018-01-24 12:16:01,493 INFO L226 Difference]: Without dead ends: 59 [2018-01-24 12:16:01,496 INFO L525 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 [2018-01-24 12:16:01,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-01-24 12:16:01,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2018-01-24 12:16:01,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-01-24 12:16:01,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2018-01-24 12:16:01,590 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 11 [2018-01-24 12:16:01,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:01,590 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2018-01-24 12:16:01,590 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 12:16:01,591 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2018-01-24 12:16:01,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 12:16:01,591 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:01,591 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:01,591 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:01,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1100032001, now seen corresponding path program 1 times [2018-01-24 12:16:01,592 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:01,592 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:01,593 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:01,593 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:01,593 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:01,611 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:01,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:01,708 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:16:01,708 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 12:16:01,710 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 12:16:01,710 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 12:16:01,710 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-24 12:16:01,710 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 6 states. [2018-01-24 12:16:01,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:01,880 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2018-01-24 12:16:01,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 12:16:01,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-01-24 12:16:01,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:01,884 INFO L225 Difference]: With dead ends: 129 [2018-01-24 12:16:01,885 INFO L226 Difference]: Without dead ends: 91 [2018-01-24 12:16:01,886 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-24 12:16:01,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-01-24 12:16:01,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 66. [2018-01-24 12:16:01,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-24 12:16:01,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2018-01-24 12:16:01,898 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 16 [2018-01-24 12:16:01,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:01,898 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2018-01-24 12:16:01,898 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 12:16:01,898 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2018-01-24 12:16:01,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 12:16:01,899 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:01,899 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:01,899 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:01,900 INFO L82 PathProgramCache]: Analyzing trace with hash -258746290, now seen corresponding path program 1 times [2018-01-24 12:16:01,900 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:01,900 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:01,901 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:01,901 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:01,902 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:01,915 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:02,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:02,030 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:16:02,030 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 12:16:02,031 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 12:16:02,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 12:16:02,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:16:02,031 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 5 states. [2018-01-24 12:16:02,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:02,127 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2018-01-24 12:16:02,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 12:16:02,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-24 12:16:02,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:02,128 INFO L225 Difference]: With dead ends: 77 [2018-01-24 12:16:02,128 INFO L226 Difference]: Without dead ends: 76 [2018-01-24 12:16:02,129 INFO L525 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 [2018-01-24 12:16:02,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-01-24 12:16:02,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2018-01-24 12:16:02,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-01-24 12:16:02,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2018-01-24 12:16:02,140 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 17 [2018-01-24 12:16:02,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:02,140 INFO L432 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2018-01-24 12:16:02,140 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 12:16:02,140 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2018-01-24 12:16:02,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 12:16:02,141 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:02,141 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:02,141 INFO L371 AbstractCegarLoop]: === Iteration 4 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:02,141 INFO L82 PathProgramCache]: Analyzing trace with hash -258746291, now seen corresponding path program 1 times [2018-01-24 12:16:02,142 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:02,142 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:02,143 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:02,143 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:02,143 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:02,152 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:02,182 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:16:02,182 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 12:16:02,182 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 12:16:02,182 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 12:16:02,183 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:16:02,183 INFO L87 Difference]: Start difference. First operand 68 states and 78 transitions. Second operand 5 states. [2018-01-24 12:16:02,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:02,225 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2018-01-24 12:16:02,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 12:16:02,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-24 12:16:02,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:02,226 INFO L225 Difference]: With dead ends: 68 [2018-01-24 12:16:02,226 INFO L226 Difference]: Without dead ends: 67 [2018-01-24 12:16:02,227 INFO L525 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 [2018-01-24 12:16:02,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-01-24 12:16:02,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-01-24 12:16:02,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-01-24 12:16:02,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2018-01-24 12:16:02,233 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 17 [2018-01-24 12:16:02,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:02,233 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2018-01-24 12:16:02,233 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 12:16:02,234 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2018-01-24 12:16:02,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 12:16:02,234 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:02,234 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:02,234 INFO L371 AbstractCegarLoop]: === Iteration 5 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:02,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1933852231, now seen corresponding path program 1 times [2018-01-24 12:16:02,234 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:02,235 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:02,235 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:02,235 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:02,235 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:02,244 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:02,330 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:02,330 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:02,340 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:02,369 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:02,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:02,446 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:02,446 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-01-24 12:16:02,464 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 12:16:02,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 12:16:02,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-01-24 12:16:02,465 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 9 states. [2018-01-24 12:16:02,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:02,593 INFO L93 Difference]: Finished difference Result 107 states and 125 transitions. [2018-01-24 12:16:02,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 12:16:02,594 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-24 12:16:02,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:02,595 INFO L225 Difference]: With dead ends: 107 [2018-01-24 12:16:02,595 INFO L226 Difference]: Without dead ends: 105 [2018-01-24 12:16:02,595 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-01-24 12:16:02,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-01-24 12:16:02,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 90. [2018-01-24 12:16:02,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-01-24 12:16:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 100 transitions. [2018-01-24 12:16:02,606 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 100 transitions. Word has length 22 [2018-01-24 12:16:02,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:02,606 INFO L432 AbstractCegarLoop]: Abstraction has 90 states and 100 transitions. [2018-01-24 12:16:02,606 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 12:16:02,606 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 100 transitions. [2018-01-24 12:16:02,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 12:16:02,607 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:02,607 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:02,607 INFO L371 AbstractCegarLoop]: === Iteration 6 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:02,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1693854175, now seen corresponding path program 1 times [2018-01-24 12:16:02,607 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:02,607 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:02,608 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:02,608 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:02,608 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:02,620 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:02,720 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:02,720 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:02,729 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:02,746 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:02,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:16:02,832 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:02,832 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-01-24 12:16:02,832 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 12:16:02,832 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 12:16:02,833 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-01-24 12:16:02,833 INFO L87 Difference]: Start difference. First operand 90 states and 100 transitions. Second operand 10 states. [2018-01-24 12:16:03,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:03,096 INFO L93 Difference]: Finished difference Result 160 states and 176 transitions. [2018-01-24 12:16:03,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 12:16:03,097 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2018-01-24 12:16:03,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:03,098 INFO L225 Difference]: With dead ends: 160 [2018-01-24 12:16:03,098 INFO L226 Difference]: Without dead ends: 99 [2018-01-24 12:16:03,098 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-01-24 12:16:03,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-01-24 12:16:03,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 63. [2018-01-24 12:16:03,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-01-24 12:16:03,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2018-01-24 12:16:03,107 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 29 [2018-01-24 12:16:03,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:03,107 INFO L432 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2018-01-24 12:16:03,108 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 12:16:03,108 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2018-01-24 12:16:03,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-24 12:16:03,109 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:03,109 INFO L322 BasicCegarLoop]: trace histogram [3, 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] [2018-01-24 12:16:03,110 INFO L371 AbstractCegarLoop]: === Iteration 7 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:03,111 INFO L82 PathProgramCache]: Analyzing trace with hash -218817753, now seen corresponding path program 2 times [2018-01-24 12:16:03,111 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:03,111 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:03,112 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:03,112 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:03,112 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:03,126 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:03,158 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-24 12:16:03,158 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:03,158 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:03,163 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 12:16:03,171 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:03,176 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:03,177 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:03,180 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:03,193 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-24 12:16:03,213 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-24 12:16:03,213 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2018-01-24 12:16:03,214 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 12:16:03,214 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 12:16:03,214 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-01-24 12:16:03,214 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 6 states. [2018-01-24 12:16:03,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:03,256 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2018-01-24 12:16:03,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 12:16:03,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2018-01-24 12:16:03,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:03,258 INFO L225 Difference]: With dead ends: 96 [2018-01-24 12:16:03,258 INFO L226 Difference]: Without dead ends: 77 [2018-01-24 12:16:03,258 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-01-24 12:16:03,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-01-24 12:16:03,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 70. [2018-01-24 12:16:03,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-01-24 12:16:03,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2018-01-24 12:16:03,267 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 35 [2018-01-24 12:16:03,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:03,267 INFO L432 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2018-01-24 12:16:03,268 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 12:16:03,268 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2018-01-24 12:16:03,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-24 12:16:03,270 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:03,270 INFO L322 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:03,270 INFO L371 AbstractCegarLoop]: === Iteration 8 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:03,270 INFO L82 PathProgramCache]: Analyzing trace with hash -2013598170, now seen corresponding path program 1 times [2018-01-24 12:16:03,270 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:03,270 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:03,271 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:03,271 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:03,272 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:03,283 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:03,417 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-24 12:16:03,417 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:16:03,417 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 12:16:03,417 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 12:16:03,417 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 12:16:03,417 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-01-24 12:16:03,418 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 9 states. [2018-01-24 12:16:03,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:03,530 INFO L93 Difference]: Finished difference Result 149 states and 161 transitions. [2018-01-24 12:16:03,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 12:16:03,531 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2018-01-24 12:16:03,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:03,532 INFO L225 Difference]: With dead ends: 149 [2018-01-24 12:16:03,532 INFO L226 Difference]: Without dead ends: 91 [2018-01-24 12:16:03,533 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-01-24 12:16:03,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-01-24 12:16:03,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2018-01-24 12:16:03,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-01-24 12:16:03,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2018-01-24 12:16:03,544 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 35 [2018-01-24 12:16:03,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:03,545 INFO L432 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2018-01-24 12:16:03,545 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 12:16:03,545 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2018-01-24 12:16:03,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-01-24 12:16:03,547 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:03,547 INFO L322 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:03,547 INFO L371 AbstractCegarLoop]: === Iteration 9 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:03,547 INFO L82 PathProgramCache]: Analyzing trace with hash 98230391, now seen corresponding path program 1 times [2018-01-24 12:16:03,547 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:03,547 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:03,548 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:03,548 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:03,549 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:03,565 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:03,754 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 73 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-24 12:16:03,754 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:03,754 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:03,762 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:03,784 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 83 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-24 12:16:03,945 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:03,945 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2018-01-24 12:16:03,945 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-24 12:16:03,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-24 12:16:03,946 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2018-01-24 12:16:03,946 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand 18 states. [2018-01-24 12:16:04,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:04,202 INFO L93 Difference]: Finished difference Result 186 states and 198 transitions. [2018-01-24 12:16:04,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-24 12:16:04,202 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 59 [2018-01-24 12:16:04,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:04,203 INFO L225 Difference]: With dead ends: 186 [2018-01-24 12:16:04,203 INFO L226 Difference]: Without dead ends: 132 [2018-01-24 12:16:04,204 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2018-01-24 12:16:04,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-01-24 12:16:04,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 114. [2018-01-24 12:16:04,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-01-24 12:16:04,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 120 transitions. [2018-01-24 12:16:04,213 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 120 transitions. Word has length 59 [2018-01-24 12:16:04,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:04,214 INFO L432 AbstractCegarLoop]: Abstraction has 114 states and 120 transitions. [2018-01-24 12:16:04,214 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-24 12:16:04,214 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 120 transitions. [2018-01-24 12:16:04,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-01-24 12:16:04,216 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:04,216 INFO L322 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] [2018-01-24 12:16:04,216 INFO L371 AbstractCegarLoop]: === Iteration 10 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:04,216 INFO L82 PathProgramCache]: Analyzing trace with hash -81663113, now seen corresponding path program 1 times [2018-01-24 12:16:04,216 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:04,216 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:04,217 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:04,217 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:04,217 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:04,233 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 37 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-01-24 12:16:04,396 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:04,396 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:04,401 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:04,422 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:04,685 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 47 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-01-24 12:16:04,706 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:04,706 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2018-01-24 12:16:04,706 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-24 12:16:04,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-24 12:16:04,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2018-01-24 12:16:04,707 INFO L87 Difference]: Start difference. First operand 114 states and 120 transitions. Second operand 16 states. [2018-01-24 12:16:05,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:05,156 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2018-01-24 12:16:05,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-24 12:16:05,156 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2018-01-24 12:16:05,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:05,158 INFO L225 Difference]: With dead ends: 163 [2018-01-24 12:16:05,158 INFO L226 Difference]: Without dead ends: 103 [2018-01-24 12:16:05,159 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=681, Unknown=0, NotChecked=0, Total=870 [2018-01-24 12:16:05,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-01-24 12:16:05,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2018-01-24 12:16:05,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-01-24 12:16:05,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2018-01-24 12:16:05,171 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 67 [2018-01-24 12:16:05,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:05,172 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2018-01-24 12:16:05,172 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-24 12:16:05,172 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2018-01-24 12:16:05,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-01-24 12:16:05,174 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:05,174 INFO L322 BasicCegarLoop]: trace histogram [11, 9, 9, 8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:05,174 INFO L371 AbstractCegarLoop]: === Iteration 11 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:05,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1642738256, now seen corresponding path program 2 times [2018-01-24 12:16:05,175 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:05,175 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:05,175 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:05,176 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:05,176 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:05,196 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 138 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-01-24 12:16:05,482 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:05,483 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:05,489 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 12:16:05,501 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:05,525 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:05,528 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:05,533 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:05,560 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:05,562 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:05,566 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:05,567 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:05,795 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 128 proven. 30 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-01-24 12:16:05,820 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:05,820 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2018-01-24 12:16:05,820 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-24 12:16:05,820 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-24 12:16:05,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-01-24 12:16:05,821 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 17 states. [2018-01-24 12:16:06,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:06,143 INFO L93 Difference]: Finished difference Result 150 states and 156 transitions. [2018-01-24 12:16:06,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-24 12:16:06,144 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 89 [2018-01-24 12:16:06,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:06,145 INFO L225 Difference]: With dead ends: 150 [2018-01-24 12:16:06,145 INFO L226 Difference]: Without dead ends: 149 [2018-01-24 12:16:06,145 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2018-01-24 12:16:06,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-01-24 12:16:06,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 129. [2018-01-24 12:16:06,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-01-24 12:16:06,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2018-01-24 12:16:06,162 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 89 [2018-01-24 12:16:06,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:06,163 INFO L432 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2018-01-24 12:16:06,163 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-24 12:16:06,163 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2018-01-24 12:16:06,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-01-24 12:16:06,165 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:06,165 INFO L322 BasicCegarLoop]: trace histogram [16, 13, 13, 12, 12, 12, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:06,165 INFO L371 AbstractCegarLoop]: === Iteration 12 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:06,165 INFO L82 PathProgramCache]: Analyzing trace with hash -2114920591, now seen corresponding path program 3 times [2018-01-24 12:16:06,165 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:06,165 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:06,166 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:06,166 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:06,166 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:06,187 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:06,580 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 379 proven. 125 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-01-24 12:16:06,581 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:06,581 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:06,588 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-24 12:16:06,601 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:06,605 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:06,610 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:06,617 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:06,619 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:06,625 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:06,635 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:06,635 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:06,639 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:06,639 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:06,976 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 271 proven. 38 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-01-24 12:16:06,998 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:06,998 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 27 [2018-01-24 12:16:06,998 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-24 12:16:06,998 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-24 12:16:06,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2018-01-24 12:16:06,999 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand 27 states. [2018-01-24 12:16:08,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:08,298 INFO L93 Difference]: Finished difference Result 231 states and 240 transitions. [2018-01-24 12:16:08,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-24 12:16:08,298 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 125 [2018-01-24 12:16:08,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:08,299 INFO L225 Difference]: With dead ends: 231 [2018-01-24 12:16:08,299 INFO L226 Difference]: Without dead ends: 183 [2018-01-24 12:16:08,300 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 111 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=530, Invalid=2776, Unknown=0, NotChecked=0, Total=3306 [2018-01-24 12:16:08,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-01-24 12:16:08,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2018-01-24 12:16:08,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-01-24 12:16:08,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 174 transitions. [2018-01-24 12:16:08,321 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 174 transitions. Word has length 125 [2018-01-24 12:16:08,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:08,321 INFO L432 AbstractCegarLoop]: Abstraction has 171 states and 174 transitions. [2018-01-24 12:16:08,321 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-24 12:16:08,321 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 174 transitions. [2018-01-24 12:16:08,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-01-24 12:16:08,324 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:08,324 INFO L322 BasicCegarLoop]: trace histogram [22, 18, 18, 17, 17, 17, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:08,324 INFO L371 AbstractCegarLoop]: === Iteration 13 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:08,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1539464154, now seen corresponding path program 4 times [2018-01-24 12:16:08,324 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:08,324 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:08,325 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:08,325 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:08,325 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:08,351 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:08,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 756 proven. 207 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2018-01-24 12:16:08,728 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:08,728 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:08,733 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-24 12:16:08,763 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:08,768 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 733 proven. 44 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-01-24 12:16:08,902 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:08,903 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12] total 25 [2018-01-24 12:16:08,903 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-24 12:16:08,903 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-24 12:16:08,904 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2018-01-24 12:16:08,904 INFO L87 Difference]: Start difference. First operand 171 states and 174 transitions. Second operand 25 states. [2018-01-24 12:16:09,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:09,604 INFO L93 Difference]: Finished difference Result 248 states and 255 transitions. [2018-01-24 12:16:09,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-24 12:16:09,604 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 167 [2018-01-24 12:16:09,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:09,606 INFO L225 Difference]: With dead ends: 248 [2018-01-24 12:16:09,606 INFO L226 Difference]: Without dead ends: 203 [2018-01-24 12:16:09,606 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=303, Invalid=1419, Unknown=0, NotChecked=0, Total=1722 [2018-01-24 12:16:09,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-01-24 12:16:09,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 181. [2018-01-24 12:16:09,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-24 12:16:09,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 184 transitions. [2018-01-24 12:16:09,622 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 184 transitions. Word has length 167 [2018-01-24 12:16:09,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:09,623 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 184 transitions. [2018-01-24 12:16:09,623 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-24 12:16:09,623 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 184 transitions. [2018-01-24 12:16:09,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-01-24 12:16:09,624 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:09,625 INFO L322 BasicCegarLoop]: trace histogram [23, 19, 19, 18, 18, 18, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:09,625 INFO L371 AbstractCegarLoop]: === Iteration 14 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:09,625 INFO L82 PathProgramCache]: Analyzing trace with hash -679675678, now seen corresponding path program 5 times [2018-01-24 12:16:09,625 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:09,625 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:09,626 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:09,626 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:09,626 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:09,649 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:09,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 436 proven. 52 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2018-01-24 12:16:09,925 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:09,925 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:09,930 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-24 12:16:09,945 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:09,950 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:09,956 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:09,963 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:09,969 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:09,975 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:09,981 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:09,983 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:09,988 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:09,992 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:09,993 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:09,997 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:09,997 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 436 proven. 52 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2018-01-24 12:16:10,333 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:10,333 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2018-01-24 12:16:10,334 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-24 12:16:10,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-24 12:16:10,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2018-01-24 12:16:10,334 INFO L87 Difference]: Start difference. First operand 181 states and 184 transitions. Second operand 15 states. [2018-01-24 12:16:10,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:10,491 INFO L93 Difference]: Finished difference Result 203 states and 207 transitions. [2018-01-24 12:16:10,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 12:16:10,491 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 173 [2018-01-24 12:16:10,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:10,492 INFO L225 Difference]: With dead ends: 203 [2018-01-24 12:16:10,492 INFO L226 Difference]: Without dead ends: 202 [2018-01-24 12:16:10,493 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 159 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2018-01-24 12:16:10,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-01-24 12:16:10,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 183. [2018-01-24 12:16:10,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-01-24 12:16:10,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 186 transitions. [2018-01-24 12:16:10,509 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 186 transitions. Word has length 173 [2018-01-24 12:16:10,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:10,510 INFO L432 AbstractCegarLoop]: Abstraction has 183 states and 186 transitions. [2018-01-24 12:16:10,510 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-24 12:16:10,510 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 186 transitions. [2018-01-24 12:16:10,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-01-24 12:16:10,512 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:10,512 INFO L322 BasicCegarLoop]: trace histogram [24, 20, 20, 19, 19, 19, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:10,512 INFO L371 AbstractCegarLoop]: === Iteration 15 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:10,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1150822614, now seen corresponding path program 6 times [2018-01-24 12:16:10,513 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:10,513 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:10,514 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:10,514 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:10,514 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:10,541 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:10,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1354 backedges. 528 proven. 80 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2018-01-24 12:16:10,854 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:10,854 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:10,859 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-24 12:16:10,871 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:10,875 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:10,879 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:10,883 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:10,889 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:10,897 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:10,905 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:10,907 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:10,913 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:10,916 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:10,916 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:10,922 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:10,922 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1354 backedges. 586 proven. 351 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2018-01-24 12:16:11,290 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:11,291 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17] total 26 [2018-01-24 12:16:11,291 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-24 12:16:11,291 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-24 12:16:11,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2018-01-24 12:16:11,291 INFO L87 Difference]: Start difference. First operand 183 states and 186 transitions. Second operand 27 states. [2018-01-24 12:16:12,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:12,172 INFO L93 Difference]: Finished difference Result 293 states and 306 transitions. [2018-01-24 12:16:12,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-01-24 12:16:12,173 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 179 [2018-01-24 12:16:12,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:12,175 INFO L225 Difference]: With dead ends: 293 [2018-01-24 12:16:12,175 INFO L226 Difference]: Without dead ends: 292 [2018-01-24 12:16:12,176 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 157 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=537, Invalid=2115, Unknown=0, NotChecked=0, Total=2652 [2018-01-24 12:16:12,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-01-24 12:16:12,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 246. [2018-01-24 12:16:12,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-01-24 12:16:12,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 253 transitions. [2018-01-24 12:16:12,205 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 253 transitions. Word has length 179 [2018-01-24 12:16:12,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:12,206 INFO L432 AbstractCegarLoop]: Abstraction has 246 states and 253 transitions. [2018-01-24 12:16:12,206 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-24 12:16:12,206 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 253 transitions. [2018-01-24 12:16:12,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-01-24 12:16:12,209 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:12,209 INFO L322 BasicCegarLoop]: trace histogram [26, 22, 22, 21, 21, 21, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:12,209 INFO L371 AbstractCegarLoop]: === Iteration 16 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:12,209 INFO L82 PathProgramCache]: Analyzing trace with hash -96791750, now seen corresponding path program 7 times [2018-01-24 12:16:12,209 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:12,209 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:12,210 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:12,210 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:12,210 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:12,236 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1612 backedges. 912 proven. 229 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2018-01-24 12:16:12,529 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:12,529 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:12,534 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:12,573 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:12,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1612 backedges. 1079 proven. 40 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2018-01-24 12:16:12,715 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:12,715 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2018-01-24 12:16:12,716 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-24 12:16:12,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-24 12:16:12,716 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2018-01-24 12:16:12,716 INFO L87 Difference]: Start difference. First operand 246 states and 253 transitions. Second operand 23 states. [2018-01-24 12:16:12,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:12,986 INFO L93 Difference]: Finished difference Result 333 states and 342 transitions. [2018-01-24 12:16:12,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 12:16:12,986 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 191 [2018-01-24 12:16:12,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:12,988 INFO L225 Difference]: With dead ends: 333 [2018-01-24 12:16:12,988 INFO L226 Difference]: Without dead ends: 231 [2018-01-24 12:16:12,989 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=656, Unknown=0, NotChecked=0, Total=812 [2018-01-24 12:16:12,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-01-24 12:16:13,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-01-24 12:16:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-01-24 12:16:13,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 235 transitions. [2018-01-24 12:16:13,012 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 235 transitions. Word has length 191 [2018-01-24 12:16:13,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:13,012 INFO L432 AbstractCegarLoop]: Abstraction has 231 states and 235 transitions. [2018-01-24 12:16:13,012 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-24 12:16:13,013 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 235 transitions. [2018-01-24 12:16:13,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-01-24 12:16:13,014 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:13,014 INFO L322 BasicCegarLoop]: trace histogram [31, 26, 26, 25, 25, 25, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:13,014 INFO L371 AbstractCegarLoop]: === Iteration 17 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:13,015 INFO L82 PathProgramCache]: Analyzing trace with hash -431804325, now seen corresponding path program 8 times [2018-01-24 12:16:13,015 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:13,015 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:13,016 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:13,016 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:13,016 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:13,045 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2305 backedges. 1559 proven. 307 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2018-01-24 12:16:13,538 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:13,563 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:13,568 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 12:16:13,582 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:13,606 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:13,611 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:13,615 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:13,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2305 backedges. 1423 proven. 70 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2018-01-24 12:16:13,791 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:13,791 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14] total 29 [2018-01-24 12:16:13,792 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-24 12:16:13,792 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-24 12:16:13,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2018-01-24 12:16:13,792 INFO L87 Difference]: Start difference. First operand 231 states and 235 transitions. Second operand 29 states. [2018-01-24 12:16:14,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:14,519 INFO L93 Difference]: Finished difference Result 313 states and 321 transitions. [2018-01-24 12:16:14,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-24 12:16:14,519 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 227 [2018-01-24 12:16:14,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:14,520 INFO L225 Difference]: With dead ends: 313 [2018-01-24 12:16:14,521 INFO L226 Difference]: Without dead ends: 256 [2018-01-24 12:16:14,521 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=412, Invalid=2038, Unknown=0, NotChecked=0, Total=2450 [2018-01-24 12:16:14,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-01-24 12:16:14,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 237. [2018-01-24 12:16:14,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-01-24 12:16:14,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 240 transitions. [2018-01-24 12:16:14,540 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 240 transitions. Word has length 227 [2018-01-24 12:16:14,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:14,541 INFO L432 AbstractCegarLoop]: Abstraction has 237 states and 240 transitions. [2018-01-24 12:16:14,541 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-24 12:16:14,541 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 240 transitions. [2018-01-24 12:16:14,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-01-24 12:16:14,542 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:14,542 INFO L322 BasicCegarLoop]: trace histogram [32, 27, 27, 26, 26, 26, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:14,542 INFO L371 AbstractCegarLoop]: === Iteration 18 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:14,542 INFO L82 PathProgramCache]: Analyzing trace with hash 944998563, now seen corresponding path program 9 times [2018-01-24 12:16:14,542 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:14,542 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:14,543 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:14,543 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:14,543 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:14,574 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:15,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2469 backedges. 897 proven. 92 refuted. 0 times theorem prover too weak. 1480 trivial. 0 not checked. [2018-01-24 12:16:15,077 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:15,077 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:15,082 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-24 12:16:15,099 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:15,115 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:15,120 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:15,127 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:15,135 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:15,146 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:15,158 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:15,165 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:15,168 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:15,168 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:15,172 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:15,172 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:15,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2469 backedges. 897 proven. 92 refuted. 0 times theorem prover too weak. 1480 trivial. 0 not checked. [2018-01-24 12:16:15,687 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:15,687 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2018-01-24 12:16:15,687 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-24 12:16:15,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-24 12:16:15,688 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2018-01-24 12:16:15,688 INFO L87 Difference]: Start difference. First operand 237 states and 240 transitions. Second operand 27 states. [2018-01-24 12:16:15,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:15,915 INFO L93 Difference]: Finished difference Result 290 states and 294 transitions. [2018-01-24 12:16:15,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-24 12:16:15,916 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 233 [2018-01-24 12:16:15,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:15,918 INFO L225 Difference]: With dead ends: 290 [2018-01-24 12:16:15,918 INFO L226 Difference]: Without dead ends: 289 [2018-01-24 12:16:15,919 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 211 SyntacticMatches, 9 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=195, Invalid=675, Unknown=0, NotChecked=0, Total=870 [2018-01-24 12:16:15,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-01-24 12:16:15,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 285. [2018-01-24 12:16:15,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-01-24 12:16:15,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 289 transitions. [2018-01-24 12:16:15,953 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 289 transitions. Word has length 233 [2018-01-24 12:16:15,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:15,954 INFO L432 AbstractCegarLoop]: Abstraction has 285 states and 289 transitions. [2018-01-24 12:16:15,954 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-24 12:16:15,954 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 289 transitions. [2018-01-24 12:16:15,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-01-24 12:16:15,956 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:15,956 INFO L322 BasicCegarLoop]: trace histogram [39, 33, 33, 32, 32, 32, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:15,956 INFO L371 AbstractCegarLoop]: === Iteration 19 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:15,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1397576748, now seen corresponding path program 10 times [2018-01-24 12:16:15,956 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:15,956 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:15,957 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:15,957 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:15,957 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:15,988 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3710 backedges. 2416 proven. 425 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2018-01-24 12:16:16,731 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:16,731 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:16,736 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-24 12:16:16,784 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:16,788 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:17,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3710 backedges. 2089 proven. 102 refuted. 0 times theorem prover too weak. 1519 trivial. 0 not checked. [2018-01-24 12:16:17,030 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:17,030 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16] total 33 [2018-01-24 12:16:17,031 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-24 12:16:17,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-24 12:16:17,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=886, Unknown=0, NotChecked=0, Total=1056 [2018-01-24 12:16:17,032 INFO L87 Difference]: Start difference. First operand 285 states and 289 transitions. Second operand 33 states. [2018-01-24 12:16:18,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:18,274 INFO L93 Difference]: Finished difference Result 452 states and 465 transitions. [2018-01-24 12:16:18,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-01-24 12:16:18,274 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 281 [2018-01-24 12:16:18,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:18,277 INFO L225 Difference]: With dead ends: 452 [2018-01-24 12:16:18,277 INFO L226 Difference]: Without dead ends: 347 [2018-01-24 12:16:18,278 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=537, Invalid=2769, Unknown=0, NotChecked=0, Total=3306 [2018-01-24 12:16:18,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-01-24 12:16:18,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 319. [2018-01-24 12:16:18,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-01-24 12:16:18,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 326 transitions. [2018-01-24 12:16:18,305 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 326 transitions. Word has length 281 [2018-01-24 12:16:18,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:18,306 INFO L432 AbstractCegarLoop]: Abstraction has 319 states and 326 transitions. [2018-01-24 12:16:18,306 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-24 12:16:18,306 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 326 transitions. [2018-01-24 12:16:18,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-01-24 12:16:18,307 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:18,307 INFO L322 BasicCegarLoop]: trace histogram [40, 34, 34, 33, 33, 33, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:18,307 INFO L371 AbstractCegarLoop]: === Iteration 20 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:18,308 INFO L82 PathProgramCache]: Analyzing trace with hash -825440932, now seen corresponding path program 11 times [2018-01-24 12:16:18,308 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:18,308 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:18,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:18,308 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:18,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:18,330 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:18,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3918 backedges. 1170 proven. 114 refuted. 0 times theorem prover too weak. 2634 trivial. 0 not checked. [2018-01-24 12:16:18,748 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:18,748 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:18,753 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-24 12:16:18,769 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:18,771 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:18,775 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:18,780 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:18,786 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:18,793 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:18,801 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:18,809 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:18,816 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:18,824 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:18,832 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:18,835 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:18,841 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:18,843 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:18,843 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:18,853 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:18,854 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3918 backedges. 1170 proven. 114 refuted. 0 times theorem prover too weak. 2634 trivial. 0 not checked. [2018-01-24 12:16:19,282 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:19,283 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2018-01-24 12:16:19,283 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-24 12:16:19,283 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-24 12:16:19,284 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2018-01-24 12:16:19,284 INFO L87 Difference]: Start difference. First operand 319 states and 326 transitions. Second operand 19 states. [2018-01-24 12:16:19,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:19,616 INFO L93 Difference]: Finished difference Result 345 states and 353 transitions. [2018-01-24 12:16:19,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-24 12:16:19,616 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 287 [2018-01-24 12:16:19,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:19,617 INFO L225 Difference]: With dead ends: 345 [2018-01-24 12:16:19,618 INFO L226 Difference]: Without dead ends: 344 [2018-01-24 12:16:19,618 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 267 SyntacticMatches, 13 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2018-01-24 12:16:19,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-01-24 12:16:19,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 321. [2018-01-24 12:16:19,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-01-24 12:16:19,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 328 transitions. [2018-01-24 12:16:19,659 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 328 transitions. Word has length 287 [2018-01-24 12:16:19,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:19,660 INFO L432 AbstractCegarLoop]: Abstraction has 321 states and 328 transitions. [2018-01-24 12:16:19,660 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-24 12:16:19,660 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 328 transitions. [2018-01-24 12:16:19,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-01-24 12:16:19,662 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:19,662 INFO L322 BasicCegarLoop]: trace histogram [41, 35, 35, 34, 34, 34, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:19,663 INFO L371 AbstractCegarLoop]: === Iteration 21 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:19,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1751572516, now seen corresponding path program 12 times [2018-01-24 12:16:19,663 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:19,663 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:19,664 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:19,664 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:19,664 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:19,695 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4132 backedges. 1344 proven. 154 refuted. 0 times theorem prover too weak. 2634 trivial. 0 not checked. [2018-01-24 12:16:20,259 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:20,259 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:20,266 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-24 12:16:20,289 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:20,295 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:20,301 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:20,315 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:20,322 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:20,330 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:20,340 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:20,355 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:20,371 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:20,385 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:20,405 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:20,410 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:20,419 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:20,422 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:20,422 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:20,444 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:20,445 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4132 backedges. 1344 proven. 154 refuted. 0 times theorem prover too weak. 2634 trivial. 0 not checked. [2018-01-24 12:16:21,382 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:21,382 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2018-01-24 12:16:21,383 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-24 12:16:21,383 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-24 12:16:21,384 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2018-01-24 12:16:21,384 INFO L87 Difference]: Start difference. First operand 321 states and 328 transitions. Second operand 25 states. [2018-01-24 12:16:21,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:21,671 INFO L93 Difference]: Finished difference Result 381 states and 394 transitions. [2018-01-24 12:16:21,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 12:16:21,672 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 293 [2018-01-24 12:16:21,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:21,674 INFO L225 Difference]: With dead ends: 381 [2018-01-24 12:16:21,674 INFO L226 Difference]: Without dead ends: 380 [2018-01-24 12:16:21,675 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 270 SyntacticMatches, 11 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=293, Invalid=763, Unknown=0, NotChecked=0, Total=1056 [2018-01-24 12:16:21,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2018-01-24 12:16:21,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 327. [2018-01-24 12:16:21,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-01-24 12:16:21,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 335 transitions. [2018-01-24 12:16:21,704 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 335 transitions. Word has length 293 [2018-01-24 12:16:21,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:21,705 INFO L432 AbstractCegarLoop]: Abstraction has 327 states and 335 transitions. [2018-01-24 12:16:21,705 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-24 12:16:21,705 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 335 transitions. [2018-01-24 12:16:21,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-01-24 12:16:21,707 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:21,707 INFO L322 BasicCegarLoop]: trace histogram [42, 36, 36, 35, 35, 35, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:21,707 INFO L371 AbstractCegarLoop]: === Iteration 22 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:21,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1671183124, now seen corresponding path program 13 times [2018-01-24 12:16:21,707 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:21,707 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:21,708 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:21,708 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:21,708 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:21,731 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:22,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4352 backedges. 1688 proven. 144 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2018-01-24 12:16:22,526 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:22,526 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:22,531 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:22,591 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4352 backedges. 1718 proven. 114 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2018-01-24 12:16:22,896 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:22,897 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 38 [2018-01-24 12:16:22,897 INFO L409 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-01-24 12:16:22,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-01-24 12:16:22,898 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1183, Unknown=0, NotChecked=0, Total=1406 [2018-01-24 12:16:22,898 INFO L87 Difference]: Start difference. First operand 327 states and 335 transitions. Second operand 38 states. [2018-01-24 12:16:23,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:23,531 INFO L93 Difference]: Finished difference Result 611 states and 635 transitions. [2018-01-24 12:16:23,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-01-24 12:16:23,531 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 299 [2018-01-24 12:16:23,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:23,535 INFO L225 Difference]: With dead ends: 611 [2018-01-24 12:16:23,535 INFO L226 Difference]: Without dead ends: 428 [2018-01-24 12:16:23,536 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=565, Invalid=2191, Unknown=0, NotChecked=0, Total=2756 [2018-01-24 12:16:23,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2018-01-24 12:16:23,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 411. [2018-01-24 12:16:23,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-01-24 12:16:23,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 421 transitions. [2018-01-24 12:16:23,598 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 421 transitions. Word has length 299 [2018-01-24 12:16:23,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:23,599 INFO L432 AbstractCegarLoop]: Abstraction has 411 states and 421 transitions. [2018-01-24 12:16:23,599 INFO L433 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-01-24 12:16:23,599 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 421 transitions. [2018-01-24 12:16:23,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-01-24 12:16:23,602 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:23,602 INFO L322 BasicCegarLoop]: trace histogram [50, 43, 43, 42, 42, 42, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:23,602 INFO L371 AbstractCegarLoop]: === Iteration 23 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:23,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1483763557, now seen corresponding path program 14 times [2018-01-24 12:16:23,602 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:23,603 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:23,603 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:23,603 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:23,604 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:23,638 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:24,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6223 backedges. 3971 proven. 561 refuted. 0 times theorem prover too weak. 1691 trivial. 0 not checked. [2018-01-24 12:16:24,540 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:24,540 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:24,547 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 12:16:24,573 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:24,618 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:24,625 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:24,629 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6223 backedges. 3357 proven. 140 refuted. 0 times theorem prover too weak. 2726 trivial. 0 not checked. [2018-01-24 12:16:24,974 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:24,974 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18] total 37 [2018-01-24 12:16:24,975 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-24 12:16:24,975 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-24 12:16:24,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1119, Unknown=0, NotChecked=0, Total=1332 [2018-01-24 12:16:24,976 INFO L87 Difference]: Start difference. First operand 411 states and 421 transitions. Second operand 37 states. [2018-01-24 12:16:26,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:26,105 INFO L93 Difference]: Finished difference Result 672 states and 691 transitions. [2018-01-24 12:16:26,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-24 12:16:26,105 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 353 [2018-01-24 12:16:26,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:26,109 INFO L225 Difference]: With dead ends: 672 [2018-01-24 12:16:26,109 INFO L226 Difference]: Without dead ends: 480 [2018-01-24 12:16:26,111 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=701, Invalid=3721, Unknown=0, NotChecked=0, Total=4422 [2018-01-24 12:16:26,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-01-24 12:16:26,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 471. [2018-01-24 12:16:26,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2018-01-24 12:16:26,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 482 transitions. [2018-01-24 12:16:26,175 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 482 transitions. Word has length 353 [2018-01-24 12:16:26,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:26,176 INFO L432 AbstractCegarLoop]: Abstraction has 471 states and 482 transitions. [2018-01-24 12:16:26,176 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-24 12:16:26,176 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 482 transitions. [2018-01-24 12:16:26,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-01-24 12:16:26,179 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:26,179 INFO L322 BasicCegarLoop]: trace histogram [51, 44, 44, 43, 43, 43, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:26,179 INFO L371 AbstractCegarLoop]: === Iteration 24 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:26,180 INFO L82 PathProgramCache]: Analyzing trace with hash 2034546733, now seen corresponding path program 15 times [2018-01-24 12:16:26,180 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:26,180 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:26,181 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:26,181 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:26,181 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:26,217 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:26,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 1953 proven. 200 refuted. 0 times theorem prover too weak. 4340 trivial. 0 not checked. [2018-01-24 12:16:26,884 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:26,884 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:26,889 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-24 12:16:26,907 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:26,911 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:26,916 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:26,922 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:26,929 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:26,939 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:26,951 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:26,966 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:26,980 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:16:26,983 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:26,991 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:26,995 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:26,996 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:27,014 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:27,015 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:27,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 1953 proven. 200 refuted. 0 times theorem prover too weak. 4340 trivial. 0 not checked. [2018-01-24 12:16:27,615 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:27,615 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2018-01-24 12:16:27,616 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-24 12:16:27,616 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-24 12:16:27,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2018-01-24 12:16:27,616 INFO L87 Difference]: Start difference. First operand 471 states and 482 transitions. Second operand 27 states. [2018-01-24 12:16:27,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:27,944 INFO L93 Difference]: Finished difference Result 486 states and 498 transitions. [2018-01-24 12:16:27,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-24 12:16:27,944 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 359 [2018-01-24 12:16:27,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:27,947 INFO L225 Difference]: With dead ends: 486 [2018-01-24 12:16:27,947 INFO L226 Difference]: Without dead ends: 485 [2018-01-24 12:16:27,947 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 333 SyntacticMatches, 13 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=353, Invalid=907, Unknown=0, NotChecked=0, Total=1260 [2018-01-24 12:16:27,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2018-01-24 12:16:27,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 477. [2018-01-24 12:16:27,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2018-01-24 12:16:27,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 489 transitions. [2018-01-24 12:16:27,988 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 489 transitions. Word has length 359 [2018-01-24 12:16:27,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:27,989 INFO L432 AbstractCegarLoop]: Abstraction has 477 states and 489 transitions. [2018-01-24 12:16:27,989 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-24 12:16:27,989 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 489 transitions. [2018-01-24 12:16:27,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-01-24 12:16:27,991 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:27,991 INFO L322 BasicCegarLoop]: trace histogram [52, 45, 45, 44, 44, 44, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:27,991 INFO L371 AbstractCegarLoop]: === Iteration 25 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:27,991 INFO L82 PathProgramCache]: Analyzing trace with hash -241716683, now seen corresponding path program 16 times [2018-01-24 12:16:27,991 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:27,992 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:27,992 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:27,992 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:27,992 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:28,016 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6769 backedges. 2395 proven. 188 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2018-01-24 12:16:28,649 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:28,649 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:28,655 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-24 12:16:28,717 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:28,722 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:29,046 INFO L134 CoverageAnalysis]: Checked inductivity of 6769 backedges. 2429 proven. 154 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2018-01-24 12:16:29,068 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:29,068 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 42 [2018-01-24 12:16:29,069 INFO L409 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-01-24 12:16:29,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-01-24 12:16:29,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=1450, Unknown=0, NotChecked=0, Total=1722 [2018-01-24 12:16:29,070 INFO L87 Difference]: Start difference. First operand 477 states and 489 transitions. Second operand 42 states. [2018-01-24 12:16:29,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:29,686 INFO L93 Difference]: Finished difference Result 620 states and 637 transitions. [2018-01-24 12:16:29,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-01-24 12:16:29,686 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 365 [2018-01-24 12:16:29,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:29,688 INFO L225 Difference]: With dead ends: 620 [2018-01-24 12:16:29,688 INFO L226 Difference]: Without dead ends: 551 [2018-01-24 12:16:29,689 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 346 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=694, Invalid=2728, Unknown=0, NotChecked=0, Total=3422 [2018-01-24 12:16:29,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2018-01-24 12:16:29,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 543. [2018-01-24 12:16:29,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2018-01-24 12:16:29,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 556 transitions. [2018-01-24 12:16:29,736 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 556 transitions. Word has length 365 [2018-01-24 12:16:29,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:29,736 INFO L432 AbstractCegarLoop]: Abstraction has 543 states and 556 transitions. [2018-01-24 12:16:29,736 INFO L433 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-01-24 12:16:29,736 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 556 transitions. [2018-01-24 12:16:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2018-01-24 12:16:29,739 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:29,739 INFO L322 BasicCegarLoop]: trace histogram [61, 53, 53, 52, 52, 52, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:29,739 INFO L371 AbstractCegarLoop]: === Iteration 26 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:29,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1961864906, now seen corresponding path program 17 times [2018-01-24 12:16:29,739 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:29,739 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:29,740 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:29,740 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:29,740 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:29,766 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:30,763 INFO L134 CoverageAnalysis]: Checked inductivity of 9388 backedges. 5774 proven. 715 refuted. 0 times theorem prover too weak. 2899 trivial. 0 not checked. [2018-01-24 12:16:30,764 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:30,764 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:30,783 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-24 12:16:30,811 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,814 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,816 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,820 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,825 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,828 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,830 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,833 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,835 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,844 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,848 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,852 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,861 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,869 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,876 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,883 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,891 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,900 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,910 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,921 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,932 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,943 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:30,945 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:30,953 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:31,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9388 backedges. 4645 proven. 1024 refuted. 0 times theorem prover too weak. 3719 trivial. 0 not checked. [2018-01-24 12:16:31,357 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:31,357 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23] total 44 [2018-01-24 12:16:31,357 INFO L409 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-01-24 12:16:31,358 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-01-24 12:16:31,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=1629, Unknown=0, NotChecked=0, Total=1892 [2018-01-24 12:16:31,358 INFO L87 Difference]: Start difference. First operand 543 states and 556 transitions. Second operand 44 states. [2018-01-24 12:16:33,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:33,045 INFO L93 Difference]: Finished difference Result 926 states and 945 transitions. [2018-01-24 12:16:33,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-01-24 12:16:33,045 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 425 [2018-01-24 12:16:33,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:33,047 INFO L225 Difference]: With dead ends: 926 [2018-01-24 12:16:33,047 INFO L226 Difference]: Without dead ends: 437 [2018-01-24 12:16:33,049 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1719 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1031, Invalid=5449, Unknown=0, NotChecked=0, Total=6480 [2018-01-24 12:16:33,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2018-01-24 12:16:33,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 435. [2018-01-24 12:16:33,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-01-24 12:16:33,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 436 transitions. [2018-01-24 12:16:33,085 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 436 transitions. Word has length 425 [2018-01-24 12:16:33,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:33,085 INFO L432 AbstractCegarLoop]: Abstraction has 435 states and 436 transitions. [2018-01-24 12:16:33,086 INFO L433 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-01-24 12:16:33,086 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 436 transitions. [2018-01-24 12:16:33,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-01-24 12:16:33,087 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:33,088 INFO L322 BasicCegarLoop]: trace histogram [62, 54, 54, 53, 53, 53, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:33,088 INFO L371 AbstractCegarLoop]: === Iteration 27 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:33,088 INFO L82 PathProgramCache]: Analyzing trace with hash 2009639230, now seen corresponding path program 18 times [2018-01-24 12:16:33,088 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:33,088 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:33,089 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:33,089 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:33,089 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:33,116 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:33,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 2754 proven. 218 refuted. 0 times theorem prover too weak. 6748 trivial. 0 not checked. [2018-01-24 12:16:33,766 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:33,786 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:33,791 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-24 12:16:33,809 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:33,811 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:33,814 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:33,816 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:33,820 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:33,823 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:33,829 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:33,833 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:33,841 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:33,847 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:33,858 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:33,865 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:33,874 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:33,881 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:33,895 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:33,904 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:33,916 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:33,930 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:33,944 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:16:33,947 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:33,955 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:33,957 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:33,958 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:33,983 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:33,983 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 2720 proven. 252 refuted. 0 times theorem prover too weak. 6748 trivial. 0 not checked. [2018-01-24 12:16:34,602 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:34,602 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2018-01-24 12:16:34,603 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-24 12:16:34,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-24 12:16:34,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2018-01-24 12:16:34,603 INFO L87 Difference]: Start difference. First operand 435 states and 436 transitions. Second operand 31 states. [2018-01-24 12:16:35,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:35,556 INFO L93 Difference]: Finished difference Result 524 states and 529 transitions. [2018-01-24 12:16:35,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-01-24 12:16:35,556 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 431 [2018-01-24 12:16:35,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:35,558 INFO L225 Difference]: With dead ends: 524 [2018-01-24 12:16:35,558 INFO L226 Difference]: Without dead ends: 523 [2018-01-24 12:16:35,560 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 402 SyntacticMatches, 15 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=616, Invalid=2246, Unknown=0, NotChecked=0, Total=2862 [2018-01-24 12:16:35,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2018-01-24 12:16:35,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 507. [2018-01-24 12:16:35,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2018-01-24 12:16:35,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 510 transitions. [2018-01-24 12:16:35,626 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 510 transitions. Word has length 431 [2018-01-24 12:16:35,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:35,627 INFO L432 AbstractCegarLoop]: Abstraction has 507 states and 510 transitions. [2018-01-24 12:16:35,627 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-24 12:16:35,627 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 510 transitions. [2018-01-24 12:16:35,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2018-01-24 12:16:35,631 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:35,631 INFO L322 BasicCegarLoop]: trace histogram [73, 64, 64, 63, 63, 63, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:35,631 INFO L371 AbstractCegarLoop]: === Iteration 28 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:35,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1416226959, now seen corresponding path program 19 times [2018-01-24 12:16:35,632 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:35,632 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:35,632 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:35,633 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:35,633 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:35,676 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:36,723 INFO L134 CoverageAnalysis]: Checked inductivity of 13599 backedges. 8047 proven. 887 refuted. 0 times theorem prover too weak. 4665 trivial. 0 not checked. [2018-01-24 12:16:36,723 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:36,724 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:36,729 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:36,819 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 13599 backedges. 6499 proven. 234 refuted. 0 times theorem prover too weak. 6866 trivial. 0 not checked. [2018-01-24 12:16:37,254 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:37,255 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22] total 45 [2018-01-24 12:16:37,255 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-24 12:16:37,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-24 12:16:37,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=1666, Unknown=0, NotChecked=0, Total=1980 [2018-01-24 12:16:37,256 INFO L87 Difference]: Start difference. First operand 507 states and 510 transitions. Second operand 45 states. [2018-01-24 12:16:38,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:38,721 INFO L93 Difference]: Finished difference Result 600 states and 606 transitions. [2018-01-24 12:16:38,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-01-24 12:16:38,721 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 503 [2018-01-24 12:16:38,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:38,723 INFO L225 Difference]: With dead ends: 600 [2018-01-24 12:16:38,723 INFO L226 Difference]: Without dead ends: 519 [2018-01-24 12:16:38,725 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1889 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1008, Invalid=5634, Unknown=0, NotChecked=0, Total=6642 [2018-01-24 12:16:38,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2018-01-24 12:16:38,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 513. [2018-01-24 12:16:38,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2018-01-24 12:16:38,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 515 transitions. [2018-01-24 12:16:38,764 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 515 transitions. Word has length 503 [2018-01-24 12:16:38,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:38,764 INFO L432 AbstractCegarLoop]: Abstraction has 513 states and 515 transitions. [2018-01-24 12:16:38,764 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-24 12:16:38,764 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 515 transitions. [2018-01-24 12:16:38,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2018-01-24 12:16:38,767 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:38,809 INFO L322 BasicCegarLoop]: trace histogram [74, 65, 65, 64, 64, 64, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:38,809 INFO L371 AbstractCegarLoop]: === Iteration 29 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:38,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1055263191, now seen corresponding path program 20 times [2018-01-24 12:16:38,809 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:38,809 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:38,810 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:38,810 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:16:38,810 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:38,840 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:16:39,859 INFO L134 CoverageAnalysis]: Checked inductivity of 13999 backedges. 3663 proven. 310 refuted. 0 times theorem prover too weak. 10026 trivial. 0 not checked. [2018-01-24 12:16:39,859 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:16:39,859 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:16:39,864 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 12:16:39,885 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:39,952 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:16:39,964 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:16:39,971 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:16:39,981 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:16:39,982 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:16:39,990 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:16:39,990 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 12:16:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 13999 backedges. 3663 proven. 310 refuted. 0 times theorem prover too weak. 10026 trivial. 0 not checked. [2018-01-24 12:16:41,142 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:16:41,143 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2018-01-24 12:16:41,143 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-24 12:16:41,143 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-24 12:16:41,144 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2018-01-24 12:16:41,144 INFO L87 Difference]: Start difference. First operand 513 states and 515 transitions. Second operand 27 states. [2018-01-24 12:16:41,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:16:41,746 INFO L93 Difference]: Finished difference Result 538 states and 542 transitions. [2018-01-24 12:16:41,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 12:16:41,747 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 509 [2018-01-24 12:16:41,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:16:41,748 INFO L225 Difference]: With dead ends: 538 [2018-01-24 12:16:41,748 INFO L226 Difference]: Without dead ends: 537 [2018-01-24 12:16:41,749 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 479 SyntacticMatches, 19 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=315, Invalid=1091, Unknown=0, NotChecked=0, Total=1406 [2018-01-24 12:16:41,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2018-01-24 12:16:41,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 519. [2018-01-24 12:16:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2018-01-24 12:16:41,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 522 transitions. [2018-01-24 12:16:41,818 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 522 transitions. Word has length 509 [2018-01-24 12:16:41,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:16:41,818 INFO L432 AbstractCegarLoop]: Abstraction has 519 states and 522 transitions. [2018-01-24 12:16:41,818 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-24 12:16:41,819 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 522 transitions. [2018-01-24 12:16:41,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2018-01-24 12:16:41,822 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:16:41,822 INFO L322 BasicCegarLoop]: trace histogram [75, 66, 66, 65, 65, 65, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:16:41,823 INFO L371 AbstractCegarLoop]: === Iteration 30 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 12:16:41,823 INFO L82 PathProgramCache]: Analyzing trace with hash 874224735, now seen corresponding path program 21 times [2018-01-24 12:16:41,823 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:16:41,823 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:16:41,824 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:41,824 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:16:41,824 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:16:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:16:41,868 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. Received shutdown request... [2018-01-24 12:16:42,396 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:265) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$1(Interpolator.java:263) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:132) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:915) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:218) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:113) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:117) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-01-24 12:16:42,400 INFO L168 Benchmark]: Toolchain (without parser) took 41721.07 ms. Allocated memory was 306.7 MB in the beginning and 1.2 GB in the end (delta: 891.8 MB). Free memory was 267.6 MB in the beginning and 693.7 MB in the end (delta: -426.1 MB). Peak memory consumption was 819.0 MB. Max. memory is 5.3 GB. [2018-01-24 12:16:42,401 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 306.7 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 12:16:42,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.85 ms. Allocated memory is still 306.7 MB. Free memory was 266.6 MB in the beginning and 258.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-01-24 12:16:42,402 INFO L168 Benchmark]: Boogie Preprocessor took 31.29 ms. Allocated memory is still 306.7 MB. Free memory was 258.6 MB in the beginning and 256.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. [2018-01-24 12:16:42,402 INFO L168 Benchmark]: RCFGBuilder took 212.07 ms. Allocated memory is still 306.7 MB. Free memory was 256.5 MB in the beginning and 241.4 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 5.3 GB. [2018-01-24 12:16:42,402 INFO L168 Benchmark]: TraceAbstraction took 41302.86 ms. Allocated memory was 306.7 MB in the beginning and 1.2 GB in the end (delta: 891.8 MB). Free memory was 240.4 MB in the beginning and 693.7 MB in the end (delta: -453.3 MB). Peak memory consumption was 791.8 MB. Max. memory is 5.3 GB. [2018-01-24 12:16:42,404 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 306.7 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 168.85 ms. Allocated memory is still 306.7 MB. Free memory was 266.6 MB in the beginning and 258.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.29 ms. Allocated memory is still 306.7 MB. Free memory was 258.6 MB in the beginning and 256.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. * RCFGBuilder took 212.07 ms. Allocated memory is still 306.7 MB. Free memory was 256.5 MB in the beginning and 241.4 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 41302.86 ms. Allocated memory was 306.7 MB in the beginning and 1.2 GB in the end (delta: 891.8 MB). Free memory was 240.4 MB in the beginning and 693.7 MB in the end (delta: -453.3 MB). Peak memory consumption was 791.8 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:265) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_false-valid-deref-read.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_12-16-42-413.csv Completed graceful shutdown